{"id":44227,"date":"2023-06-05T04:52:08","date_gmt":"2022-08-15T07:01:46","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/a-tour-of-go-%e7%9a%84%e7%bb%83%e4%b9%a0%e9%a2%98%e7%9b%ae\/"},"modified":"2024-01-15T11:58:20","modified_gmt":"2024-01-15T03:58:20","slug":"a-tour-of-go-%e7%9a%84%e7%bb%83%e4%b9%a0%e9%a2%98%e7%9b%ae","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/a-tour-of-go-%e7%9a%84%e7%bb%83%e4%b9%a0%e9%a2%98%e7%9b%ae\/","title":{"rendered":"A Tour of Go \u7684\u7ec3\u4e60\u9898\u76ee"},"content":{"rendered":"

\u7ec3\u4e60\uff1a\u5faa\u73af\u548c\u51fd\u6570<\/h1>\n
package<\/span> main<\/span>\r\n\r\nimport<\/span> (<\/span>\r\n    \"fmt\"<\/span>\r\n    \"math\"<\/span>\r\n)<\/span>\r\n\r\nconst<\/span> eps<\/span> =<\/span> 1e-9<\/span>\r\n\r\nfunc<\/span> Sqrt<\/span>(<\/span>x<\/span> float64<\/span>)<\/span> float64<\/span> {<\/span>\r\n    z<\/span> :=<\/span> 1.0<\/span>\r\n    p<\/span> :=<\/span> z<\/span>\r\n\r\n    for<\/span> {<\/span>\r\n        z<\/span> =<\/span> z<\/span> -<\/span> (<\/span>z<\/span> *<\/span> z<\/span> -<\/span> x<\/span>)<\/span> \/<\/span> (<\/span>2<\/span> *<\/span> z<\/span>)<\/span>\r\n        if<\/span> math<\/span>.<\/span>Abs<\/span>(<\/span>z<\/span> -<\/span> p<\/span>)<\/span> <<\/span> eps<\/span> {<\/span>\r\n            break<\/span>\r\n        }<\/span>\r\n        p<\/span> =<\/span> z<\/span>\r\n    }<\/span>\r\n\r\n    return<\/span> z<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> main<\/span>()<\/span> {<\/span>\r\n    fmt<\/span>.<\/span>Println<\/span>(<\/span>math<\/span>.<\/span>Sqrt<\/span>(<\/span>2<\/span>))<\/span>\r\n    fmt<\/span>.<\/span>Println<\/span>(<\/span>Sqrt<\/span>(<\/span>2<\/span>))<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u8fd0\u52a8\uff1a\u8584\u7247<\/h1>\n
package<\/span> main<\/span>\r\n\r\nimport<\/span> \"code.google.com\/p\/go-tour\/pic\"<\/span>\r\n\r\nfunc<\/span> Pic<\/span>(<\/span>dx<\/span>,<\/span> dy<\/span> int<\/span>)<\/span> [][]<\/span>uint8<\/span> {<\/span>\r\n    image<\/span> :=<\/span> make<\/span>([][]<\/span>uint8<\/span>,<\/span> dy<\/span>)<\/span>\r\n    for<\/span> y<\/span> :=<\/span> range<\/span> image<\/span> {<\/span>\r\n        image<\/span>[<\/span>y<\/span>]<\/span> =<\/span> make<\/span>([]<\/span>uint8<\/span>,<\/span> dx<\/span>)<\/span>\r\n    }<\/span>\r\n\r\n    for<\/span> y<\/span> :=<\/span> 0<\/span>;<\/span> y<\/span> <<\/span> dy<\/span>;<\/span> y<\/span>++<\/span> {<\/span>\r\n        for<\/span> x<\/span> :=<\/span>0<\/span>;<\/span> x<\/span> <<\/span> dx<\/span>;<\/span> x<\/span>++<\/span> {<\/span>\r\n            image<\/span>[<\/span>y<\/span>][<\/span>x<\/span>]<\/span> =<\/span> uint8<\/span>((<\/span>x<\/span> +<\/span> y<\/span>)<\/span> \/<\/span> 2<\/span>)<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n\r\n    return<\/span> image<\/span>\r\n\r\n}<\/span>\r\n\r\nfunc<\/span> main<\/span>()<\/span> {<\/span>\r\n    pic<\/span>.<\/span>Show<\/span>(<\/span>Pic<\/span>)<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u953b\u70bc\uff1a\u5730\u56fe<\/h1>\n
package<\/span> main<\/span>\r\n\r\nimport<\/span> (<\/span>\r\n    \"code.google.com\/p\/go-tour\/wc\"<\/span>\r\n    \"strings\"<\/span>\r\n)<\/span>\r\n\r\nfunc<\/span> WordCount<\/span>(<\/span>s<\/span> string<\/span>)<\/span> map<\/span>[<\/span>string<\/span>]<\/span>int<\/span> {<\/span>\r\n    countMap<\/span> :=<\/span> map<\/span>[<\/span>string<\/span>]<\/span>int<\/span>{}<\/span>\r\n\r\n    for<\/span> _<\/span>,<\/span> word<\/span> :=<\/span> range<\/span> strings<\/span>.<\/span>Fields<\/span>(<\/span>s<\/span>)<\/span> {<\/span>\r\n        countMap<\/span>[<\/span>word<\/span>]<\/span>++<\/span>\r\n    }<\/span>\r\n\r\n    return<\/span> countMap<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> main<\/span>()<\/span> {<\/span>\r\n    wc<\/span>.<\/span>Test<\/span>(<\/span>WordCount<\/span>)<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u7ec3\u4e60\uff1a\u6590\u6ce2\u90a3\u5951\u95ed\u5305<\/h1>\n
package<\/span> main<\/span>\r\n\r\nimport<\/span> \"fmt\"<\/span>\r\n\r\nfunc<\/span> fibonacci<\/span>()<\/span> func<\/span>()<\/span> int<\/span> {<\/span>\r\n    a<\/span>,<\/span> b<\/span> :=<\/span> 0<\/span>,<\/span> 1<\/span>\r\n\r\n    return<\/span> func<\/span>()<\/span> int<\/span> {<\/span>\r\n        a<\/span>,<\/span> b<\/span> =<\/span> b<\/span>,<\/span> a<\/span> +<\/span> b<\/span>\r\n        return<\/span> a<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> main<\/span>()<\/span> {<\/span>\r\n    f<\/span> :=<\/span> fibonacci<\/span>()<\/span>\r\n\r\n    for<\/span> i<\/span> :=<\/span> 0<\/span>;<\/span> i<\/span> <<\/span> 10<\/span>;<\/span> i<\/span>++<\/span> {<\/span>\r\n        fmt<\/span>.<\/span>Println<\/span>(<\/span>f<\/span>())<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u9ad8\u7ea7\u7ec3\u4e60\uff1a\u590d\u6742\u7acb\u65b9\u6839<\/h1>\n
package<\/span> main<\/span>\r\n\r\nimport<\/span> (<\/span>\r\n    \"fmt\"<\/span>\r\n    \"math\/cmplx\"<\/span>\r\n)<\/span>\r\n\r\nconst<\/span> eps<\/span> =<\/span> 1e-9<\/span>\r\n\r\nfunc<\/span> Cbrt<\/span>(<\/span>x<\/span> complex128<\/span>)<\/span> complex128<\/span> {<\/span>\r\n    z<\/span> :=<\/span> 1<\/span> +<\/span> 0i<\/span>\r\n    p<\/span> :=<\/span> z<\/span>\r\n\r\n    for<\/span> {<\/span>\r\n        z<\/span> =<\/span> z<\/span> -<\/span> (<\/span>z<\/span> *<\/span> z<\/span> *<\/span> z<\/span> -<\/span> x<\/span>)<\/span> \/<\/span> (<\/span>3<\/span> *<\/span> z<\/span> *<\/span> z<\/span>)<\/span>\r\n        if<\/span> cmplx<\/span>.<\/span>Abs<\/span>(<\/span>z<\/span> -<\/span> p<\/span>)<\/span> <<\/span> eps<\/span> {<\/span>\r\n            break<\/span>\r\n        }<\/span>\r\n        p<\/span> =<\/span> z<\/span>\r\n    }<\/span>\r\n\r\n    return<\/span> z<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> main<\/span>()<\/span> {<\/span>\r\n    fmt<\/span>.<\/span>Println<\/span>(<\/span>cmplx<\/span>.<\/span>Pow<\/span>(<\/span>2<\/span> +<\/span> 5i<\/span>,<\/span> 1.0<\/span>\/<\/span>3<\/span>))<\/span>\r\n    fmt<\/span>.<\/span>Println<\/span>(<\/span>Cbrt<\/span>(<\/span>2<\/span> +<\/span> 5i<\/span>))<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u7ec3\u4e60\uff1a\u9519\u8bef<\/h1>\n
package<\/span> main<\/span>\r\n\r\nimport<\/span> (<\/span>\r\n    \"fmt\"<\/span>\r\n    \"math\"<\/span>\r\n)<\/span>\r\n\r\ntype<\/span> ErrNegativeSqrt<\/span> float64<\/span>\r\n\r\nfunc<\/span> (<\/span>e<\/span> ErrNegativeSqrt<\/span>)<\/span> Error<\/span>()<\/span> string<\/span> {<\/span>\r\n    return<\/span> fmt<\/span>.<\/span>Sprintf<\/span>(<\/span>\"cannot Sqrt negative number: %f\"<\/span>,<\/span> e<\/span>)<\/span>\r\n}<\/span>\r\n\r\n\r\nconst<\/span> eps<\/span> =<\/span> 1e-9<\/span>\r\n\r\nfunc<\/span> Sqrt<\/span>(<\/span>x<\/span> float64<\/span>)<\/span> (<\/span>float64<\/span>,<\/span> error<\/span>)<\/span> {<\/span>\r\n    if<\/span> x<\/span> <<\/span> 0<\/span> {<\/span>\r\n        return<\/span> 0<\/span>,<\/span> ErrNegativeSqrt<\/span>(<\/span>x<\/span>)<\/span>\r\n    }<\/span>\r\n    z<\/span> :=<\/span> 1.0<\/span>\r\n    p<\/span> :=<\/span> z<\/span>\r\n\r\n    for<\/span> {<\/span>\r\n        z<\/span> =<\/span> z<\/span> -<\/span> (<\/span>z<\/span> *<\/span> z<\/span> -<\/span> x<\/span>)<\/span> \/<\/span> (<\/span>2<\/span> *<\/span> z<\/span>)<\/span>\r\n        if<\/span> math<\/span>.<\/span>Abs<\/span>(<\/span>z<\/span> -<\/span> p<\/span>)<\/span> <<\/span> eps<\/span> {<\/span>\r\n            break<\/span>\r\n        }<\/span>\r\n        p<\/span> =<\/span> z<\/span>\r\n    }<\/span>\r\n\r\n    return<\/span> z<\/span>,<\/span> nil<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> main<\/span>()<\/span> {<\/span>\r\n    fmt<\/span>.<\/span>Println<\/span>(<\/span>Sqrt<\/span>(<\/span>2<\/span>))<\/span>\r\n    fmt<\/span>.<\/span>Println<\/span>(<\/span>Sqrt<\/span>(<\/span>-<\/span>2<\/span>))<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u7ec3\u4e60\uff1aHTTP \u5904\u7406\u7a0b\u5e8f<\/h1>\n
package<\/span> main<\/span>\r\n\r\nimport<\/span> (<\/span>\r\n    \"fmt\"<\/span>\r\n    \"net\/http\"<\/span>\r\n)<\/span>\r\n\r\ntype<\/span> String<\/span> string<\/span>\r\n\r\nfunc<\/span> (<\/span>s<\/span> String<\/span>)<\/span> ServeHTTP<\/span>(<\/span>w<\/span> http<\/span>.<\/span>ResponseWriter<\/span>,<\/span> r<\/span> *<\/span>http<\/span>.<\/span>Request<\/span>){<\/span>\r\n    fmt<\/span>.<\/span>Fprintf<\/span>(<\/span>w<\/span>,<\/span> \"%s\"<\/span>,<\/span> s<\/span>)<\/span>\r\n}<\/span>\r\n\r\ntype<\/span> Struct<\/span> struct<\/span> {<\/span>\r\n    Greeting<\/span> string<\/span>\r\n    Punct<\/span>    string<\/span>\r\n    Who<\/span>      string<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> (<\/span>s<\/span> *<\/span>Struct<\/span>)<\/span> ServeHTTP<\/span>(<\/span>w<\/span> http<\/span>.<\/span>ResponseWriter<\/span>,<\/span> r<\/span> *<\/span>http<\/span>.<\/span>Request<\/span>){<\/span>\r\n    fmt<\/span>.<\/span>Fprintf<\/span>(<\/span>w<\/span>,<\/span> \"%s\"<\/span>,<\/span> s<\/span>.<\/span>Who<\/span> +<\/span> s<\/span>.<\/span>Punct<\/span> +<\/span> s<\/span>.<\/span>Greeting<\/span>)<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> main<\/span>()<\/span> {<\/span>\r\n    http<\/span>.<\/span>Handle<\/span>(<\/span>\"\/string\"<\/span>,<\/span> String<\/span>(<\/span>\"I like takoyaki\"<\/span>))<\/span>\r\n    http<\/span>.<\/span>Handle<\/span>(<\/span>\"\/struct\"<\/span>,<\/span> &<\/span>Struct<\/span>{<\/span>\"Hello\"<\/span>,<\/span> \":\"<\/span>,<\/span> \"Sam\"<\/span>})<\/span>\r\n    http<\/span>.<\/span>ListenAndServe<\/span>(<\/span>\":4000\"<\/span>,<\/span> nil<\/span>)<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u953b\u70bc\uff1a\u56fe\u7247<\/h1>\n
package<\/span> main<\/span>\r\n\r\nimport<\/span> (<\/span>\r\n    \"code.google.com\/p\/go-tour\/pic\"<\/span>\r\n    \"image\"<\/span>\r\n    \"image\/color\"<\/span>\r\n)<\/span>\r\n\r\ntype<\/span> Image<\/span> struct<\/span>{}<\/span>\r\n\r\nfunc<\/span> (<\/span>im<\/span> *<\/span>Image<\/span>)<\/span> ColorModel<\/span>()<\/span> color<\/span>.<\/span>Model<\/span> {<\/span>\r\n    return<\/span> color<\/span>.<\/span>RGBAModel<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> (<\/span>im<\/span> *<\/span>Image<\/span>)<\/span> Bounds<\/span>()<\/span> image<\/span>.<\/span>Rectangle<\/span> {<\/span>\r\n    return<\/span> image<\/span>.<\/span>Rectangle<\/span>{<\/span>\r\n        image<\/span>.<\/span>Point<\/span>{<\/span>0<\/span>,<\/span> 0<\/span>},<\/span>\r\n        image<\/span>.<\/span>Point<\/span>{<\/span>200<\/span>,<\/span> 200<\/span>},<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> (<\/span>im<\/span> *<\/span>Image<\/span>)<\/span> At<\/span>(<\/span>x<\/span>,<\/span> y<\/span> int<\/span>)<\/span> color<\/span>.<\/span>Color<\/span> {<\/span>\r\n    return<\/span> color<\/span>.<\/span>RGBA<\/span>{<\/span>uint8<\/span>(<\/span>x<\/span> %<\/span> 256<\/span>),<\/span> uint8<\/span>(<\/span>y<\/span> %<\/span>  256<\/span>),<\/span> uint8<\/span>((<\/span>x<\/span> *<\/span> y<\/span>)<\/span> %<\/span> 256<\/span> ),<\/span> 255<\/span>}<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> main<\/span>()<\/span> {<\/span>\r\n    m<\/span> :=<\/span> Image<\/span>{}<\/span>\r\n    pic<\/span>.<\/span>ShowImage<\/span>(<\/span>&<\/span>m<\/span>)<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u7ec3\u4e60\uff1aRot13\u9605\u8bfb\u5668<\/h1>\n
package<\/span> main<\/span>\r\n\r\nimport<\/span> (<\/span>\r\n    \"io\"<\/span>\r\n    \"os\"<\/span>\r\n    \"strings\"<\/span>\r\n)<\/span>\r\n\r\ntype<\/span> rot13Reader<\/span> struct<\/span> {<\/span>\r\n    r<\/span> io<\/span>.<\/span>Reader<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> rot13<\/span>(<\/span>b<\/span> byte<\/span>)<\/span> byte<\/span> {<\/span>\r\n    if<\/span> 'A'<\/span> <=<\/span> b<\/span> &&<\/span> b<\/span> <=<\/span> 'Z'<\/span> {<\/span>\r\n        k<\/span> :=<\/span> b<\/span> -<\/span> 'A'<\/span>\r\n        return<\/span> 'A'<\/span> +<\/span> (<\/span>k<\/span> -<\/span> 13<\/span> +<\/span> 26<\/span>)<\/span> %<\/span> 26<\/span>\r\n    }<\/span>\r\n    if<\/span> 'a'<\/span> <=<\/span> b<\/span> &&<\/span> b<\/span> <=<\/span> 'z'<\/span> {<\/span>\r\n        k<\/span> :=<\/span> b<\/span> -<\/span> 'a'<\/span>\r\n        return<\/span> 'a'<\/span> +<\/span> (<\/span>k<\/span> -<\/span> 13<\/span> +<\/span> 26<\/span>)<\/span> %<\/span> 26<\/span>\r\n    }<\/span>\r\n    return<\/span> b<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> (<\/span>rot<\/span> *<\/span>rot13Reader<\/span>)<\/span> Read<\/span>(<\/span>p<\/span> []<\/span>byte<\/span>)<\/span> (<\/span>int<\/span>,<\/span> error<\/span>){<\/span>\r\n    nr<\/span>,<\/span> ne<\/span> :=<\/span> rot<\/span>.<\/span>r<\/span>.<\/span>Read<\/span>(<\/span>p<\/span>)<\/span>\r\n    if<\/span> ne<\/span> !=<\/span> nil<\/span> {<\/span>\r\n        return<\/span> nr<\/span>,<\/span> ne<\/span>\r\n    }<\/span>\r\n\r\n    for<\/span> i<\/span>:=<\/span>0<\/span>;<\/span> i<\/span><<\/span>nr<\/span>;<\/span> i<\/span>++<\/span> {<\/span>\r\n        p<\/span>[<\/span>i<\/span>]<\/span> =<\/span> rot13<\/span>(<\/span>p<\/span>[<\/span>i<\/span>])<\/span>\r\n    }<\/span>\r\n\r\n    return<\/span> nr<\/span>,<\/span> nil<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> main<\/span>()<\/span> {<\/span>\r\n    s<\/span> :=<\/span> strings<\/span>.<\/span>NewReader<\/span>(<\/span>\r\n        \"Lbh penpxrq gur pbqr!\"<\/span>)<\/span>\r\n    r<\/span> :=<\/span> rot13Reader<\/span>{<\/span>s<\/span>}<\/span>\r\n    io<\/span>.<\/span>Copy<\/span>(<\/span>os<\/span>.<\/span>Stdout<\/span>,<\/span> &<\/span>r<\/span>)<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u7ec3\u4e60\uff1a\u7b49\u4ef7\u7684\u4e8c\u8fdb\u5236\u6811<\/h1>\n
http:\/\/go-tour-jp.appspot.com\/#70
\n\u5728\u8fd9\u4e2a\u7f51\u5740\u4e0a\uff0c\u4f60\u53ef\u4ee5\u53c2\u89c2\u4e00\u4e2aGo\u8bed\u8a00\u7684\u6559\u5b66\u7f51\u7ad9\uff0c\u5b83\u6559\u4f60\u5982\u4f55\u521b\u5efa\u7b49\u4ef7\u7684\u4e8c\u53c9\u6811\u3002<\/p>\n
http:\/\/stackoverflow.com\/questions\/12224042\/go-tour-exercise-equivalent-binary-trees
\n\u8fd9\u4e2a\u95ee\u9898\u5728Stack Overflow\u4e0a\u95ee\u5230\u4e86\u5982\u4f55\u4f7f\u7528Go\u8bed\u8a00\u6765\u7ec3\u4e60\u521b\u5efa\u7b49\u4ef7\u7684\u4e8c\u53c9\u6811\u3002<\/p>\n
package<\/span> main<\/span>\r\n\r\nimport<\/span> \"code.google.com\/p\/go-tour\/tree\"<\/span>\r\nimport<\/span> \"fmt\"<\/span>\r\n\r\n\/\/ Walk walks the tree t sending all values<\/span>\r\n\/\/ from the tree to the channel ch.<\/span>\r\nfunc<\/span> Walk<\/span>(<\/span>t<\/span> *<\/span>tree<\/span>.<\/span>Tree<\/span>,<\/span> ch<\/span> chan<\/span> int<\/span>){<\/span>\r\n    var<\/span> walker<\/span> func<\/span>(<\/span>*<\/span>tree<\/span>.<\/span>Tree<\/span>)<\/span>\r\n    walker<\/span> =<\/span> func<\/span>(<\/span>t<\/span> *<\/span>tree<\/span>.<\/span>Tree<\/span>)<\/span> {<\/span>\r\n        if<\/span> t<\/span>.<\/span>Left<\/span> !=<\/span> nil<\/span> {<\/span>\r\n            walker<\/span>(<\/span>t<\/span>.<\/span>Left<\/span>)<\/span>\r\n        }<\/span>\r\n\r\n        ch<\/span> <-<\/span> t<\/span>.<\/span>Value<\/span>\r\n\r\n        if<\/span> t<\/span>.<\/span>Right<\/span> !=<\/span> nil<\/span> {<\/span>\r\n            walker<\/span>(<\/span>t<\/span>.<\/span>Right<\/span>)<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n\r\n    walker<\/span>(<\/span>t<\/span>)<\/span>\r\n    close<\/span>(<\/span>ch<\/span>)<\/span>\r\n}<\/span>\r\n\r\n\/\/ Same determines whether the trees<\/span>\r\n\/\/ t1 and t2 contain the same values.<\/span>\r\nfunc<\/span> Same<\/span>(<\/span>t1<\/span>,<\/span> t2<\/span> *<\/span>tree<\/span>.<\/span>Tree<\/span>)<\/span> bool<\/span> {<\/span>\r\n    c1<\/span> :=<\/span> make<\/span>(<\/span>chan<\/span> int<\/span>)<\/span>\r\n    c2<\/span> :=<\/span> make<\/span>(<\/span>chan<\/span> int<\/span>)<\/span>\r\n\r\n    go<\/span> Walk<\/span>(<\/span>t1<\/span>,<\/span> c1<\/span>)<\/span>\r\n    go<\/span> Walk<\/span>(<\/span>t2<\/span>,<\/span> c2<\/span>)<\/span>\r\n\r\n    for<\/span> {<\/span>\r\n        n1<\/span>,<\/span> ok1<\/span> :=<\/span> <-<\/span>c1<\/span>\r\n        n2<\/span>,<\/span> ok2<\/span> :=<\/span> <-<\/span>c2<\/span>\r\n\r\n        if<\/span> n1<\/span> !=<\/span> n2<\/span> ||<\/span> ok1<\/span> !=<\/span> ok2<\/span> {<\/span>\r\n            return<\/span> false<\/span>\r\n        }<\/span>\r\n\r\n        if<\/span> !<\/span>ok1<\/span> {<\/span>\r\n            break<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n\r\n    return<\/span> true<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> main<\/span>()<\/span> {<\/span>\r\n    fmt<\/span>.<\/span>Println<\/span>(<\/span>Same<\/span>(<\/span>tree<\/span>.<\/span>New<\/span>(<\/span>1<\/span>),<\/span> tree<\/span>.<\/span>New<\/span>(<\/span>1<\/span>)))<\/span>\r\n    fmt<\/span>.<\/span>Println<\/span>(<\/span>Same<\/span>(<\/span>tree<\/span>.<\/span>New<\/span>(<\/span>5<\/span>),<\/span> tree<\/span>.<\/span>New<\/span>(<\/span>5<\/span>)))<\/span>\r\n    fmt<\/span>.<\/span>Println<\/span>(<\/span>Same<\/span>(<\/span>tree<\/span>.<\/span>New<\/span>(<\/span>3<\/span>),<\/span> tree<\/span>.<\/span>New<\/span>(<\/span>2<\/span>)))<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u7ec3\u4e60\uff1a\u7f51\u7edc\u722c\u866b<\/h1>\n
http:\/\/go-tour-jp.appspot.com\/#71 \u53ef\u4ee5\u8ba9\u60a8\u5728\u6d4f\u89c8\u5668\u4e2d\u5b66\u4e60Go\u7f16\u7a0b\u8bed\u8a00\u7684\u4e92\u52a8\u6559\u7a0b\u3002\u8be5\u6559\u7a0b\u6db5\u76d6\u4e86Go\u8bed\u8a00\u7684\u8bed\u6cd5\u3001\u6570\u636e\u7c7b\u578b\u3001\u51fd\u6570\u7b49\u5185\u5bb9\uff0c\u5e76\u63d0\u4f9b\u4e86\u8bb8\u591a\u5b9e\u8df5\u6027\u7684\u4f8b\u5b50\u548c\u7ec3\u4e60\u3002<\/p>\n
http:\/\/c4se.hatenablog.com\/entry\/2013\/01\/24\/175114 \u662f\u4e00\u7bc7\u5173\u4e8eGo\u7f16\u7a0b\u8bed\u8a00\u7684\u535a\u6587\u3002\u5728\u8fd9\u7bc7\u535a\u6587\u4e2d\uff0c\u4f5c\u8005\u4ecb\u7ecd\u4e86Go\u7684\u4e00\u4e9b\u7279\u6027\u548c\u4f18\u52bf\uff0c\u5e76\u5206\u4eab\u4e86\u81ea\u5df1\u7684\u5b66\u4e60\u5fc3\u5f97\u548c\u4f53\u4f1a\u3002\u5982\u679c\u60a8\u5bf9Go\u7f16\u7a0b\u611f\u5174\u8da3\uff0c\u8fd9\u7bc7\u535a\u6587\u53ef\u4ee5\u4f5c\u4e3a\u60a8\u7684\u53c2\u8003\u8d44\u6599\u3002<\/p>\n
\u5728\u53e6\u4e00\u4e2a\u7248\u672c\u4e2d\uff0c\u4fee\u6b63\u4e86\u5f53\u6df1\u5ea6\u5c0f\u4e8e\u7b49\u4e8e0\u65f6\u7684\u5904\u7406\u65b9\u5f0f\u3002<\/p>\n
package<\/span> main<\/span>\r\n\r\nimport<\/span> (<\/span>\r\n    \"fmt\"<\/span>\r\n    \"time\"<\/span>\r\n)<\/span>\r\n\r\ntype<\/span> Fetcher<\/span> interface<\/span> {<\/span>\r\n    Fetch<\/span>(<\/span>url<\/span> string<\/span>)<\/span> (<\/span>body<\/span> string<\/span>,<\/span> urls<\/span> []<\/span>string<\/span>,<\/span> err<\/span> error<\/span>)<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> Crawl<\/span>(<\/span>url<\/span> string<\/span>,<\/span> depth<\/span> int<\/span>,<\/span> fetcher<\/span> Fetcher<\/span>)<\/span> {<\/span>\r\n    type<\/span> URL<\/span> struct<\/span> {<\/span>\r\n        url<\/span>   string<\/span>\r\n        depth<\/span> int<\/span>\r\n    }<\/span>\r\n\r\n    msg<\/span>  :=<\/span> make<\/span>(<\/span>chan<\/span> string<\/span>)<\/span>\r\n    req<\/span>  :=<\/span> make<\/span>(<\/span>chan<\/span> URL<\/span>)<\/span>\r\n    quit<\/span> :=<\/span> make<\/span>(<\/span>chan<\/span> int<\/span>)<\/span>\r\n\r\n    crawler<\/span> :=<\/span> func<\/span> (<\/span>url<\/span> string<\/span>,<\/span> depth<\/span> int<\/span>)<\/span> {<\/span>\r\n        defer<\/span> func<\/span>()<\/span> {<\/span> quit<\/span> <-<\/span> 0<\/span> }()<\/span>\r\n\r\n        if<\/span> depth<\/span> <=<\/span> 0<\/span> {<\/span>\r\n            return<\/span>\r\n        }<\/span>\r\n\r\n        body<\/span>,<\/span> urls<\/span>,<\/span> err<\/span> :=<\/span> fetcher<\/span>.<\/span>Fetch<\/span>(<\/span>url<\/span>)<\/span>\r\n\r\n        if<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n            msg<\/span> <-<\/span> fmt<\/span>.<\/span>Sprintf<\/span>(<\/span>\"%s<\/span>\\n<\/span>\"<\/span>,<\/span> err<\/span>)<\/span>\r\n            return<\/span>\r\n        }<\/span>\r\n\r\n        msg<\/span> <-<\/span> fmt<\/span>.<\/span>Sprintf<\/span>(<\/span>\"found: %s %q<\/span>\\n<\/span>\"<\/span>,<\/span> url<\/span>,<\/span> body<\/span>)<\/span>\r\n\r\n        for<\/span> _<\/span>,<\/span> u<\/span> :=<\/span> range<\/span> urls<\/span> {<\/span>\r\n            req<\/span> <-<\/span> URL<\/span>{<\/span> u<\/span>,<\/span> depth<\/span> -<\/span> 1<\/span> }<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n\r\n    works<\/span> :=<\/span> 1<\/span>\r\n\r\n    memo<\/span> :=<\/span> make<\/span>(<\/span>map<\/span>[<\/span>string<\/span>]<\/span>bool<\/span>)<\/span>\r\n    memo<\/span>[<\/span>url<\/span>]<\/span> =<\/span> true<\/span>\r\n\r\n    go<\/span> crawler<\/span>(<\/span>url<\/span>,<\/span> depth<\/span>)<\/span>\r\n\r\n    for<\/span> works<\/span> ><\/span> 0<\/span> {<\/span>\r\n        select<\/span> {<\/span>\r\n            case<\/span> s<\/span> :=<\/span> <-<\/span>msg<\/span>:<\/span>\r\n                fmt<\/span>.<\/span>Print<\/span>(<\/span>s<\/span>)<\/span>\r\n            case<\/span> u<\/span> :=<\/span> <-<\/span>req<\/span>:<\/span>\r\n                if<\/span> !<\/span>memo<\/span>[<\/span>u<\/span>.<\/span>url<\/span>]<\/span> {<\/span>\r\n                    memo<\/span>[<\/span>u<\/span>.<\/span>url<\/span>]<\/span> =<\/span> true<\/span>\r\n                    works<\/span>++<\/span>\r\n\r\n                    go<\/span> crawler<\/span>(<\/span>u<\/span>.<\/span>url<\/span>,<\/span> u<\/span>.<\/span>depth<\/span>)<\/span>\r\n                }<\/span>\r\n            case<\/span> <-<\/span> quit<\/span>:<\/span>\r\n                works<\/span>--<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\r\n\r\nfunc<\/span> main<\/span>()<\/span> {<\/span>\r\n    Crawl<\/span>(<\/span>\"http:\/\/golang.org\/\"<\/span>,<\/span> 4<\/span>,<\/span> fetcher<\/span>)<\/span>\r\n}<\/span>\r\n\r\n\r\ntype<\/span> fakeFetcher<\/span> map<\/span>[<\/span>string<\/span>]<\/span>*<\/span>fakeResult<\/span>\r\n\r\ntype<\/span> fakeResult<\/span> struct<\/span> {<\/span>\r\n    body<\/span> string<\/span>\r\n    urls<\/span> []<\/span>string<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> (<\/span>f<\/span> fakeFetcher<\/span>)<\/span> Fetch<\/span>(<\/span>url<\/span> string<\/span>)<\/span> (<\/span>string<\/span>,<\/span> []<\/span>string<\/span>,<\/span> error<\/span>)<\/span> {<\/span>\r\n    time<\/span>.<\/span>Sleep<\/span>(<\/span>time<\/span>.<\/span>Second<\/span> *<\/span> 5<\/span>)<\/span>\r\n    if<\/span> res<\/span>,<\/span> ok<\/span> :=<\/span> f<\/span>[<\/span>url<\/span>];<\/span> ok<\/span> {<\/span>\r\n        return<\/span> res<\/span>.<\/span>body<\/span>,<\/span> res<\/span>.<\/span>urls<\/span>,<\/span> nil<\/span>\r\n    }<\/span>\r\n    return<\/span> \"\"<\/span>,<\/span> nil<\/span>,<\/span> fmt<\/span>.<\/span>Errorf<\/span>(<\/span>\"not found: %s\"<\/span>,<\/span> url<\/span>)<\/span>\r\n}<\/span>\r\n\r\n\/\/ fetcher is a populated fakeFetcher.<\/span>\r\nvar<\/span> fetcher<\/span> =<\/span> fakeFetcher<\/span>{<\/span>\r\n    \"http:\/\/golang.org\/\"<\/span>:<\/span> &<\/span>fakeResult<\/span>{<\/span>\r\n        \"The Go Programming Language\"<\/span>,<\/span>\r\n        []<\/span>string<\/span>{<\/span>\r\n            \"http:\/\/golang.org\/pkg\/\"<\/span>,<\/span>\r\n            \"http:\/\/golang.org\/cmd\/\"<\/span>,<\/span>\r\n        },<\/span>\r\n    },<\/span>\r\n    \"http:\/\/golang.org\/pkg\/\"<\/span>:<\/span> &<\/span>fakeResult<\/span>{<\/span>\r\n        \"Packages\"<\/span>,<\/span>\r\n        []<\/span>string<\/span>{<\/span>\r\n            \"http:\/\/golang.org\/\"<\/span>,<\/span>\r\n            \"http:\/\/golang.org\/cmd\/\"<\/span>,<\/span>\r\n            \"http:\/\/golang.org\/pkg\/fmt\/\"<\/span>,<\/span>\r\n            \"http:\/\/golang.org\/pkg\/os\/\"<\/span>,<\/span>\r\n        },<\/span>\r\n    },<\/span>\r\n    \"http:\/\/golang.org\/pkg\/fmt\/\"<\/span>:<\/span> &<\/span>fakeResult<\/span>{<\/span>\r\n        \"Package fmt\"<\/span>,<\/span>\r\n        []<\/span>string<\/span>{<\/span>\r\n            \"http:\/\/golang.org\/\"<\/span>,<\/span>\r\n            \"http:\/\/golang.org\/pkg\/\"<\/span>,<\/span>\r\n        },<\/span>\r\n    },<\/span>\r\n    \"http:\/\/golang.org\/pkg\/os\/\"<\/span>:<\/span> &<\/span>fakeResult<\/span>{<\/span>\r\n        \"Package os\"<\/span>,<\/span>\r\n        []<\/span>string<\/span>{<\/span>\r\n            \"http:\/\/golang.org\/\"<\/span>,<\/span>\r\n            \"http:\/\/golang.org\/pkg\/\"<\/span>,<\/span>\r\n        },<\/span>\r\n    },<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u7ec3\u4e60\uff1a\u7f51\u7edc\u722c\u866b \u53e6\u4e00\u4e2a\u7248\u672c<\/h1>\n
\u7531\u4e8e\u4e0a\u9762\u7684\u7248\u672c\u4f1a\u88ab\u963b\u6b62\uff0c\u6240\u4ee5\u6211\u4e5f\u5199\u4e86\u4e00\u4e2a\u4e0d\u88ab\u963b\u6b62\u7684\u7248\u672c\u3002
\n\u53e6\u5916\uff0c\u5904\u7406 depth <= 0 \u7684\u5730\u65b9\u6709\u9519\u8bef\uff0c\u6240\u4ee5\u6211\u4e5f\u505a\u51fa\u4e86\u4fee\u6b63\u3002
\n\u611f\u89c9\u8fd9\u4e2a\u7248\u672c\u66f4\u6e05\u723d\u4e00\u4e9b\u3002<\/p>\n
package<\/span> main<\/span>\r\n\r\nimport<\/span> (<\/span>\r\n    \"fmt\"<\/span>\r\n    \"time\"<\/span>\r\n)<\/span>\r\n\r\ntype<\/span> Fetcher<\/span> interface<\/span> {<\/span>\r\n    Fetch<\/span>(<\/span>url<\/span> string<\/span>)<\/span> (<\/span>body<\/span> string<\/span>,<\/span> urls<\/span> []<\/span>string<\/span>,<\/span> err<\/span> error<\/span>)<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> Crawl<\/span>(<\/span>url<\/span> string<\/span>,<\/span> depth<\/span> int<\/span>,<\/span> fetcher<\/span> Fetcher<\/span>)<\/span> {<\/span>\r\n    type<\/span> Msg<\/span> struct<\/span> {<\/span>\r\n        message<\/span> string<\/span>\r\n    }<\/span>\r\n    type<\/span> URL<\/span> struct<\/span> {<\/span>\r\n        url<\/span>   string<\/span>\r\n        depth<\/span> int<\/span>\r\n    }<\/span>\r\n    type<\/span> Quit<\/span> struct<\/span>{}<\/span>\r\n\r\n    ch<\/span> :=<\/span> make<\/span>(<\/span>chan<\/span> interface<\/span>{},<\/span> 20<\/span>)<\/span>\r\n    crawler<\/span> :=<\/span> func<\/span> (<\/span>url<\/span> string<\/span>,<\/span> depth<\/span> int<\/span>)<\/span> {<\/span>\r\n        defer<\/span> func<\/span>()<\/span> {<\/span> ch<\/span> <-<\/span> Quit<\/span>{}<\/span> }()<\/span>\r\n\r\n        body<\/span>,<\/span> urls<\/span>,<\/span> err<\/span> :=<\/span> fetcher<\/span>.<\/span>Fetch<\/span>(<\/span>url<\/span>)<\/span>\r\n\r\n        if<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n            ch<\/span> <-<\/span> Msg<\/span>{<\/span> fmt<\/span>.<\/span>Sprintf<\/span>(<\/span>\"%s<\/span>\\n<\/span>\"<\/span>,<\/span> err<\/span>)<\/span> }<\/span>\r\n            return<\/span>\r\n        }<\/span>\r\n\r\n        ch<\/span> <-<\/span> Msg<\/span>{<\/span> fmt<\/span>.<\/span>Sprintf<\/span>(<\/span>\"found: %s %q<\/span>\\n<\/span>\"<\/span>,<\/span> url<\/span>,<\/span> body<\/span>)<\/span> }<\/span>\r\n\r\n        for<\/span> _<\/span>,<\/span> u<\/span> :=<\/span> range<\/span> urls<\/span> {<\/span>\r\n            ch<\/span> <-<\/span> URL<\/span>{<\/span> u<\/span>,<\/span> depth<\/span> -<\/span> 1<\/span> }<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n\r\n    works<\/span> :=<\/span> 0<\/span>\r\n    memo<\/span>  :=<\/span> make<\/span>(<\/span>map<\/span>[<\/span>string<\/span>]<\/span>bool<\/span>)<\/span>\r\n\r\n    ch<\/span> <-<\/span> URL<\/span>{<\/span> url<\/span>,<\/span> depth<\/span> }<\/span>\r\n\r\n    for<\/span> {<\/span>\r\n        req<\/span> :=<\/span> <-<\/span> ch<\/span>\r\n\r\n        switch<\/span> req<\/span> :=<\/span> req<\/span>.<\/span>(<\/span>type<\/span>)<\/span> {<\/span>\r\n            case<\/span> Msg<\/span>:<\/span>\r\n                fmt<\/span>.<\/span>Print<\/span>(<\/span>req<\/span>.<\/span>message<\/span>)<\/span>\r\n            case<\/span> URL<\/span>:<\/span>\r\n                if<\/span> req<\/span>.<\/span>depth<\/span> ><\/span> 0<\/span> &&<\/span> !<\/span>memo<\/span>[<\/span>req<\/span>.<\/span>url<\/span>]<\/span> {<\/span>\r\n                    memo<\/span>[<\/span>req<\/span>.<\/span>url<\/span>]<\/span> =<\/span> true<\/span>\r\n                    works<\/span>++<\/span>\r\n\r\n                    go<\/span> crawler<\/span>(<\/span>req<\/span>.<\/span>url<\/span>,<\/span> req<\/span>.<\/span>depth<\/span>)<\/span>\r\n                }<\/span>\r\n            case<\/span> Quit<\/span>:<\/span>\r\n                works<\/span>--<\/span>\r\n        }<\/span>\r\n\r\n        if<\/span> works<\/span> <=<\/span> 0<\/span> {<\/span>\r\n            break<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\r\n\r\nfunc<\/span> main<\/span>()<\/span> {<\/span>\r\n    Crawl<\/span>(<\/span>\"http:\/\/golang.org\/\"<\/span>,<\/span> 4<\/span>,<\/span> fetcher<\/span>)<\/span>\r\n}<\/span>\r\n\r\n\r\ntype<\/span> fakeFetcher<\/span> map<\/span>[<\/span>string<\/span>]<\/span>*<\/span>fakeResult<\/span>\r\n\r\ntype<\/span> fakeResult<\/span> struct<\/span> {<\/span>\r\n    body<\/span> string<\/span>\r\n    urls<\/span> []<\/span>string<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> (<\/span>f<\/span> fakeFetcher<\/span>)<\/span> Fetch<\/span>(<\/span>url<\/span> string<\/span>)<\/span> (<\/span>string<\/span>,<\/span> []<\/span>string<\/span>,<\/span> error<\/span>)<\/span> {<\/span>\r\n    time<\/span>.<\/span>Sleep<\/span>(<\/span>time<\/span>.<\/span>Second<\/span> *<\/span> 5<\/span>)<\/span>\r\n    if<\/span> res<\/span>,<\/span> ok<\/span> :=<\/span> f<\/span>[<\/span>url<\/span>];<\/span> ok<\/span> {<\/span>\r\n        return<\/span> res<\/span>.<\/span>body<\/span>,<\/span> res<\/span>.<\/span>urls<\/span>,<\/span> nil<\/span>\r\n    }<\/span>\r\n    return<\/span> \"\"<\/span>,<\/span> nil<\/span>,<\/span> fmt<\/span>.<\/span>Errorf<\/span>(<\/span>\"not found: %s\"<\/span>,<\/span> url<\/span>)<\/span>\r\n}<\/span>\r\n\r\n\/\/ fetcher is a populated fakeFetcher.<\/span>\r\nvar<\/span> fetcher<\/span> =<\/span> fakeFetcher<\/span>{<\/span>\r\n    \"http:\/\/golang.org\/\"<\/span>:<\/span> &<\/span>fakeResult<\/span>{<\/span>\r\n        \"The Go Programming Language\"<\/span>,<\/span>\r\n        []<\/span>string<\/span>{<\/span>\r\n            \"http:\/\/golang.org\/pkg\/\"<\/span>,<\/span>\r\n            \"http:\/\/golang.org\/cmd\/\"<\/span>,<\/span>\r\n        },<\/span>\r\n    },<\/span>\r\n    \"http:\/\/golang.org\/pkg\/\"<\/span>:<\/span> &<\/span>fakeResult<\/span>{<\/span>\r\n        \"Packages\"<\/span>,<\/span>\r\n        []<\/span>string<\/span>{<\/span>\r\n            \"http:\/\/golang.org\/\"<\/span>,<\/span>\r\n            \"http:\/\/golang.org\/cmd\/\"<\/span>,<\/span>\r\n            \"http:\/\/golang.org\/pkg\/fmt\/\"<\/span>,<\/span>\r\n            \"http:\/\/golang.org\/pkg\/os\/\"<\/span>,<\/span>\r\n        },<\/span>\r\n    },<\/span>\r\n    \"http:\/\/golang.org\/pkg\/fmt\/\"<\/span>:<\/span> &<\/span>fakeResult<\/span>{<\/span>\r\n        \"Package fmt\"<\/span>,<\/span>\r\n        []<\/span>string<\/span>{<\/span>\r\n            \"http:\/\/golang.org\/\"<\/span>,<\/span>\r\n            \"http:\/\/golang.org\/pkg\/\"<\/span>,<\/span>\r\n        },<\/span>\r\n    },<\/span>\r\n    \"http:\/\/golang.org\/pkg\/os\/\"<\/span>:<\/span> &<\/span>fakeResult<\/span>{<\/span>\r\n        \"Package os\"<\/span>,<\/span>\r\n        []<\/span>string<\/span>{<\/span>\r\n            \"http:\/\/golang.org\/\"<\/span>,<\/span>\r\n            \"http:\/\/golang.org\/pkg\/\"<\/span>,<\/span>\r\n        },<\/span>\r\n    },<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u7ec3\u4e60\uff1a\u5faa\u73af\u548c\u51fd\u6570 package main import ( “fmt” “math” ) const eps […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-44227","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nA Tour of Go \u7684\u7ec3\u4e60\u9898\u76ee - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/a-tour-of-go-\u7684\u7ec3\u4e60\u9898\u76ee\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A Tour of Go \u7684\u7ec3\u4e60\u9898\u76ee\" \/>\n<meta property=\"og:description\" content=\"\u7ec3\u4e60\uff1a\u5faa\u73af\u548c\u51fd\u6570 package main import ( "fmt" "math" ) const eps […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/a-tour-of-go-\u7684\u7ec3\u4e60\u9898\u76ee\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2022-08-15T07:01:46+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-01-15T03:58:20+00:00\" \/>\n<meta name=\"author\" content=\"\u6e05, \u626c\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u6e05, \u626c\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/a-tour-of-go-%e7%9a%84%e7%bb%83%e4%b9%a0%e9%a2%98%e7%9b%ae\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/a-tour-of-go-%e7%9a%84%e7%bb%83%e4%b9%a0%e9%a2%98%e7%9b%ae\/\",\"name\":\"A Tour of Go \u7684\u7ec3\u4e60\u9898\u76ee - Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#website\"},\"datePublished\":\"2022-08-15T07:01:46+00:00\",\"dateModified\":\"2024-01-15T03:58:20+00:00\",\"author\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/cb5556d2501da73d864cac945e8d9461\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/a-tour-of-go-%e7%9a%84%e7%bb%83%e4%b9%a0%e9%a2%98%e7%9b%ae\/#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.silicloud.com\/zh\/blog\/a-tour-of-go-%e7%9a%84%e7%bb%83%e4%b9%a0%e9%a2%98%e7%9b%ae\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/a-tour-of-go-%e7%9a%84%e7%bb%83%e4%b9%a0%e9%a2%98%e7%9b%ae\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.silicloud.com\/zh\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"A Tour of Go \u7684\u7ec3\u4e60\u9898\u76ee\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#website\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/\",\"name\":\"Blog - Silicon Cloud\",\"description\":\"\",\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/cb5556d2501da73d864cac945e8d9461\",\"name\":\"\u6e05, \u626c\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/32a4239de8ff29adace466261d309424a1e5fe9f7e3036bf89fe03f2e3dbe717?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/32a4239de8ff29adace466261d309424a1e5fe9f7e3036bf89fe03f2e3dbe717?s=96&d=mm&r=g\",\"caption\":\"\u6e05, \u626c\"},\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/author\/qingyang\/\"},{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/a-tour-of-go-%e7%9a%84%e7%bb%83%e4%b9%a0%e9%a2%98%e7%9b%ae\/#local-main-organization-logo\",\"url\":\"\",\"contentUrl\":\"\",\"caption\":\"Blog - Silicon Cloud\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"A Tour of Go \u7684\u7ec3\u4e60\u9898\u76ee - Blog - Silicon Cloud","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.silicloud.com\/zh\/blog\/a-tour-of-go-\u7684\u7ec3\u4e60\u9898\u76ee\/","og_locale":"zh_CN","og_type":"article","og_title":"A Tour of Go \u7684\u7ec3\u4e60\u9898\u76ee","og_description":"\u7ec3\u4e60\uff1a\u5faa\u73af\u548c\u51fd\u6570 package main import ( \"fmt\" \"math\" ) const eps […]","og_url":"https:\/\/www.silicloud.com\/zh\/blog\/a-tour-of-go-\u7684\u7ec3\u4e60\u9898\u76ee\/","og_site_name":"Blog - Silicon Cloud","article_published_time":"2022-08-15T07:01:46+00:00","article_modified_time":"2024-01-15T03:58:20+00:00","author":"\u6e05, \u626c","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"\u6e05, \u626c","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"6 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.silicloud.com\/zh\/blog\/a-tour-of-go-%e7%9a%84%e7%bb%83%e4%b9%a0%e9%a2%98%e7%9b%ae\/","url":"https:\/\/www.silicloud.com\/zh\/blog\/a-tour-of-go-%e7%9a%84%e7%bb%83%e4%b9%a0%e9%a2%98%e7%9b%ae\/","name":"A Tour of Go \u7684\u7ec3\u4e60\u9898\u76ee - Blog - Silicon Cloud","isPartOf":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/#website"},"datePublished":"2022-08-15T07:01:46+00:00","dateModified":"2024-01-15T03:58:20+00:00","author":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/cb5556d2501da73d864cac945e8d9461"},"breadcrumb":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/a-tour-of-go-%e7%9a%84%e7%bb%83%e4%b9%a0%e9%a2%98%e7%9b%ae\/#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.silicloud.com\/zh\/blog\/a-tour-of-go-%e7%9a%84%e7%bb%83%e4%b9%a0%e9%a2%98%e7%9b%ae\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.silicloud.com\/zh\/blog\/a-tour-of-go-%e7%9a%84%e7%bb%83%e4%b9%a0%e9%a2%98%e7%9b%ae\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.silicloud.com\/zh\/blog\/"},{"@type":"ListItem","position":2,"name":"A Tour of Go \u7684\u7ec3\u4e60\u9898\u76ee"}]},{"@type":"WebSite","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#website","url":"https:\/\/www.silicloud.com\/zh\/blog\/","name":"Blog - Silicon Cloud","description":"","inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/cb5556d2501da73d864cac945e8d9461","name":"\u6e05, \u626c","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/32a4239de8ff29adace466261d309424a1e5fe9f7e3036bf89fe03f2e3dbe717?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/32a4239de8ff29adace466261d309424a1e5fe9f7e3036bf89fe03f2e3dbe717?s=96&d=mm&r=g","caption":"\u6e05, \u626c"},"url":"https:\/\/www.silicloud.com\/zh\/blog\/author\/qingyang\/"},{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.silicloud.com\/zh\/blog\/a-tour-of-go-%e7%9a%84%e7%bb%83%e4%b9%a0%e9%a2%98%e7%9b%ae\/#local-main-organization-logo","url":"","contentUrl":"","caption":"Blog - Silicon Cloud"}]}},"_links":{"self":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/44227","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/comments?post=44227"}],"version-history":[{"count":2,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/44227\/revisions"}],"predecessor-version":[{"id":59263,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/44227\/revisions\/59263"}],"wp:attachment":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/media?parent=44227"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/categories?post=44227"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/tags?post=44227"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}