\u5728\u4e0b\u4e00\u90e8\u5206\u4e2d\uff0c\u6211\u4eec\u5c06\u6311\u9009\u6bcf\u4e2aAPI\u5e76\u4ee5\u9002\u5f53\u7684\u793a\u4f8b\u8fdb\u884c\u6df1\u5165\u8ba8\u8bba\u3002<\/p>\n
Scala\u4f7f\u7528\u5207\u7247\u51fd\u6570\u7684\u793a\u4f8b<\/h3>\n![\"Scala](\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/656481b3a4b2f92e6c72ec0f\/6-0.jpeg\" "\\"\\"")
<\/div>\n def slice(from-index: Int, until-index: Int): ScalaAPIClass[A]\r\n<\/code><\/pre>\n\u8fd9\u91cc\u7684”ScalaAPIClass”\u662f\u6307\u4efb\u4f55\u652f\u6301\u57fa\u4e8e\u7d22\u5f15\u7684\u8bbf\u95ee\uff08\u4f8b\u5982Seq\u3001List\u7b49\uff09\u7684Scala\u96c6\u5408\u7c7b\u3001String\u548cArray\u7c7b\u3002\u4f8b\u5982\uff1a\u4e0b\u9762\u7684\u51fd\u6570\u5728Scala API\u7684Seq\u7c7b\u4e2d\u88ab\u5b9a\u4e49\u3002<\/p>\n
def slice(from-index: Int, until-index: Int): Seq[A]\r\n<\/code><\/pre>\n\u5207\u7247\u529f\u80fd\u53c2\u6570\uff1a\u4ee5\u4e0b\u8868\u683c\u63cf\u8ff0\u4e86”\u5207\u7247”\u529f\u80fd\u53c2\u6570\u7684\u7528\u6cd5\u3002<\/p>\n
\n\n\n\n\n\u5e8f\u53f7<\/th>\n \u51fd\u6570\u53c2\u6570<\/th>\n \u7528\u6cd5<\/th>\n<\/tr>\n<\/thead>\n \n\n1.<\/td>\n \u7b2c\u4e00\u4e2a\u53c2\u6570<\/td>\n \u8d77\u59cb\u7d22\u5f15\uff08\u5305\u542b\uff09\u3002\u5b83\u5e94\u8be5\u662f\u96f6\u6216\u4efb\u4f55\u5c0f\u4e8e\u96c6\u5408\u3001\u5b57\u7b26\u4e32\u6216\u6570\u7ec4\u957f\u5ea6\u7684\u6b63\u6574\u6570\u3002<\/td>\n<\/tr>\n \n2.<\/td>\n \u7b2c\u4e8c\u4e2a\u53c2\u6570<\/td>\n \u7ed3\u675f\u7d22\u5f15\uff08\u4e0d\u5305\u542b\uff09\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n\u5207\u7247\u51fd\u6570\u4ece”\u8d77\u59cb\u7d22\u5f15”\uff08\u5305\u542b\uff09\u63d0\u53d6\u5143\u7d20\uff0c\u76f4\u5230”\u7ec8\u6b62\u7d22\u5f15”\uff08\u4e0d\u5305\u542b\uff09\u3002\u8fd9\u91cc\u7684\u5143\u7d20\u53ef\u4ee5\u662f\u6570\u7ec4\u4e2d\u7684\u6570\u5b57\uff0c\u5b57\u7b26\u4e32\u4e2d\u7684\u5b57\u7b26\uff0c\u6216\u8005\u96c6\u5408\u4e2d\u7684\u5bf9\u8c61\u3002<\/p>\n
Scala \u6570\u7ec4\u5207\u7247<\/h3>\n
\u5728Scala API\u4e2d\uff0cArray\u7c7b\u5c06\u5207\u7247\u51fd\u6570\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n
def slice(from: Int, until: Int): Array[T]\r\n<\/code><\/pre>\n\u5728\u8fd9\u91cc\uff0c’from’\u662f\u6570\u7ec4\u7684\u8d77\u59cb\u7d22\u5f15\uff08\u5305\u542b\uff09\uff0c’until’\u662f\u6570\u7ec4\u7684\u7ed3\u675f\u7d22\u5f15\uff08\u4e0d\u5305\u542b\uff09\u3002\u6570\u7ec4\u5207\u7247\u51fd\u6570\u793a\u4f8b\uff1a<\/p>\n
scala> val marksArray = Array(56,79,60,99,71)\r\nmarksArray: Array[Int] = Array(56, 79, 60, 99, 71)\r\n<\/code><\/pre>\n\u73b0\u5728\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b5\u4e2a\u503c\u7684\u6574\u6570\u6570\u7ec4\uff0c\u5176\u7d22\u5f15\u5f00\u59cb\u7684\u503c\u4e3a0\uff0c\u7d22\u5f15\u7ed3\u675f\u7684\u503c\u4e3a4\u3002\u5b83\u7684\u957f\u5ea6\u4e3a5\u3002\u73b0\u5728\u8ba9\u6211\u4eec\u6765\u4f7f\u7528\u5207\u7247\u51fd\u6570\u3002<\/p>\n
scala> marksArray.slice(0,2)\r\nres0: Array[Int] = Array(56, 79)\r\n<\/code><\/pre>\n\u4ece0\u7d22\u5f15\u5f00\u59cb\uff0c\u5373\u7b2c\u4e00\u4e2a\u5143\u7d20\uff0c\u5e76\u68c0\u7d22\u6240\u6709\u5143\u7d20\u76f4\u52302\uff0c\u8fd9\u610f\u5473\u7740\u7d22\u5f15\u4e3a1\uff0c\u6240\u4ee5\u6211\u4eec\u5728\u8fd9\u91cc\u5f97\u5230\u4e86\u7b2c0\u4e2a\u5143\u7d20\u548c\u7b2c1\u4e2a\u5143\u7d20\u3002<\/p>\n
scala> marksArray.slice(3,4)\r\nres1: Array[Int] = Array(99)\r\n<\/code><\/pre>\n\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4efb\u4f55\u7d22\u5f15\u8303\u56f4\u8fdb\u884c\u8bbf\u95ee\u3002<\/p>\n
scala> marksArray.slice(3,3)\r\nres2: Array[Int] = Array()\r\n<\/code><\/pre>\n\u5982\u679c\u6211\u4eec\u50cf\u4e0a\u9762\u90a3\u6837\u7ed9\u51fa\u76f8\u540c\u7684\u8d77\u59cb\u548c\u7ed3\u675f\u503c\uff0c\u6211\u4eec\u4f1a\u5f97\u5230\u4e00\u4e2a\u7a7a\u6570\u7ec4\uff0c\u4e3a\u4ec0\u4e48\uff1f\u8d77\u59cb\u7d22\u5f15 = 3\uff0c\u7ed3\u675f\u7d22\u5f15 = 3 – 1 = 2\uff0c\u4e0d\u53ef\u80fd\u4ece\u7d22\u5f153\u52302\u4e4b\u95f4\u68c0\u7d22\u4e00\u7ec4\u5143\u7d20\u5bf9\u5427\u3002<\/p>\n
scala> marksArray.slice(-1,3)\r\nres3: Array[Int] = Array(56, 79, 60)\r\n<\/code><\/pre>\n\u5982\u679c\u6211\u4eec\u7ed9\u51fa\u8d1f\u503c\uff0c\u5219\u7d22\u5f15\u503c\u5c06\u4ece\u6240\u793a\u7684\u53ef\u7528\u7d22\u5f15\u5f00\u59cb\u3002<\/p>\n
scala> marksArray.slice(0,5)\r\n\r\nres4: Array[Int] = Array(56, 79, 60, 99, 71)\r\n<\/code><\/pre>\n\u5982\u679c\u6211\u4eec\u5728\u8d85\u51fa\u53ef\u7528\u7d22\u5f15\u7684\u8303\u56f4\u5185\u7ed9\u51fa\u7b2c\u4e8c\u4e2a\u53c2\u6570\u7684\u503c\uff0c\u5982\u4e0a\u6240\u793a\uff08marksArray\u7684\u53ef\u7528\u6700\u5927\u7d22\u5f15\u503c\u4ec5\u4e3a4\uff0c\u56e0\u4e3a\u5176\u957f\u5ea6\u4e3a5\uff09\uff0c\u5b83\u5c06\u5ffd\u7565\u8be5\u503c\u5e76\u8fd4\u56de\u5230\u53ef\u7528\u7d22\u5f15\u4e3a\u6b62\u3002\u6ce8\u610f\uff1a\u4e0eJava\u4e0d\u540c\uff0c\u5b83\u4e0d\u4f1a\u629b\u51fa\u4efb\u4f55ArrayIndexOutOfBoundsException\u5f02\u5e38\u3002<\/p>\n
Scala\u96c6\u5408\u5207\u7247<\/h3>\n
\u5728Scala\u7684\u6807\u51c6API\u4e2d\uff0c\u5927\u591a\u6570\u7684\u7c7b\u90fd\u5b9a\u4e49\u4e86slice\u51fd\u6570\uff0c\u7528\u4e8e\u652f\u6301\u57fa\u4e8e\u7d22\u5f15\u7684\u5143\u7d20\u8bbf\u95ee\u3002\u4f8b\u5982\uff0cList\u7c7b\u5982\u4e0b\u6240\u793a\u5b9a\u4e49\u4e86\u8fd9\u4e2a\u51fd\u6570\u3002<\/p>\n
def slice(from: Int, until: Int): List[A]\r\n<\/code><\/pre>\n\u5207\u7247\u51fd\u6570\u7684\u793a\u4f8b\uff1a\u4e0e\u6570\u7ec4\u793a\u4f8b\u76f8\u540c\uff0c\u5bf9\u4e8e\u4efb\u4f55\u96c6\u5408API\uff0c\u6211\u4eec\u5c06\u83b7\u5f97\u76f8\u540c\u7684\u7ed3\u679c\u3002<\/p>\n
scala> val list = List(56, 79, 60, 99, 71)\r\nlist: List[Int] = List(56, 79, 60, 99, 71)\r\n\r\nscala> list.slice(0,2)\r\nres5: List[Int] = List(56, 79)\r\n\r\nscala> list.slice(3,4)\r\nres6: List[Int] = List(99)\r\n\r\nscala> list.slice(3,3)\r\nres7: List[Int] = List()\r\n\r\nscala> list.slice(-1,3)\r\nres8: List[Int] = List(56, 79, 60)\r\n\r\nscala> list.slice(0,5)\r\nres9: List[Int] = List(56, 79, 60, 99, 71)\r\n<\/code><\/pre>\n\u5982\u679c\u6211\u4eec\u8bbf\u95ee\u4e00\u4e2a\u7a7a\u5217\u8868\uff0c\u6211\u4eec\u53ea\u4f1a\u5f97\u5230\u4e00\u4e2a\u7a7a\u5217\u8868\uff0c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
scala> val list2 = List()\r\nlist2: List[Nothing] = List()\r\n\r\nscala> list2.slice(0,1)\r\n\r\nres10: List[Nothing] = List()\r\n<\/code><\/pre>\nScala\u7684\u5b57\u7b26\u4e32\u5207\u7247<\/h3>\n
\u5728Scala API\u4e2d\uff0c”StringOps”\u7c7b\u5b9a\u4e49\u5728scala.collection.immutable\u5305\u4e2d\u3002\u5b83\u5c06slice\u51fd\u6570\u5b9a\u4e49\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
def slice(from: Int, until: Int): String\r\n<\/code><\/pre>\n\u6ce8\u610f\uff1a\u5728Scala\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528Java\u7684String\u7c7b\u3002\u4f46\u662f\u8fd9\u4e2a\u7c7b\u6ca1\u6709\u5207\u7247\u51fd\u6570\u3002\u5f53\u6211\u4eec\u5728Java\u7684String\u5bf9\u8c61\u4e0a\u4f7f\u7528\u5207\u7247\u51fd\u6570\u65f6\uff0cScala\u7f16\u8bd1\u5668\u4f1a\u81ea\u52a8\u5c06\u8be5String\u5bf9\u8c61\u8f6c\u6362\u4e3aStringOps\u7c7b\u5bf9\u8c61\uff0c\u4ee5\u4f7f\u7528\u8be5\u5207\u7247\u51fd\u6570\u3002\uff08\u4e0d\u4ec5\u6709\u5207\u7247\u51fd\u6570\uff0c\u8fd8\u6709\u5176\u4ed6\u51fd\u6570\u3002\u8bf7\u53c2\u8003Scala API\u83b7\u53d6\u66f4\u591a\u4fe1\u606f\u3002\uff09\u8fd9\u610f\u5473\u7740”StringOps”\u662fString\u7c7b\u7684\u4e00\u4e2a\u9690\u5f0f\u7c7b\u3002String\u5207\u7247\u51fd\u6570\u7684\u793a\u4f8b\uff1a<\/p>\n
scala> val str = \"Hello I'm doing good. How are you?\"\r\nstr: String = Hello I'm doing good. How are you?\r\n\r\nscala> str.slice(6,9)\r\n\r\nres8: String = I'm\r\n<\/code><\/pre>\n\u6211\u4eec\u77e5\u9053\uff0c\u5728\u5b57\u7b26\u4e32\u4e2d\u7d22\u5f15\u4ece\u96f6\u5f00\u59cb\u3002\u8fd9\u91cc\u7684\u8d77\u59cb\u7d22\u5f15\u4e3a6\u610f\u5473\u7740\u7ed3\u675f\u7d22\u5f15\u4e3a9\uff08\u7531\u4e8e\u662f\u6392\u9664\u6027\u7684\uff0c\u6240\u4ee5\u6211\u4eec\u53ea\u9700\u8981\u8003\u8651\u7ed3\u675f\u7d22\u5f15\u4e3a8\uff09\u3002\u5b57\u7b26\u4e32\u7684\u5b50\u4e32\u51fd\u6570\u4e0e\u5207\u7247\u51fd\u6570\u7684\u5de5\u4f5c\u65b9\u5f0f\u76f8\u540c\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
scala> str.substring(6,9)\r\nres12: String = I'm\r\n<\/code><\/pre>\n\u8fd9\u91cc\u7684str.slice(6,9)\u548cstr.substring(6,9)\u90fd\u8fd4\u56de\u76f8\u540c\u7684\u503c\u3002slice\u4e0esubstring\u662fString\u7c7b\u4e2d\u7684\u51fd\u6570\uff0c\u5b83\u4eec\u4e4b\u95f4\u7684\u533a\u522b\u662f\u4ec0\u4e48\uff1f<\/p>\n
\n- \u5728\u529f\u80fd\u548c\u8bed\u6cd5\u65b9\u9762\u6ca1\u6709\u533a\u522b<\/li>\n
- \u6027\u80fd\u51e0\u4e4e\u76f8\u4f3c\uff0c\u5dee\u5f02\u53ef\u4ee5\u5ffd\u7565\u3002<\/li>\n<\/ul>\n
\u6ce8\u610f\uff1a\u5728 Scala \u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u50cf\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u4e00\u6837\u8bbf\u95ee\u5b57\u7b26\u4e32\u7684\u5b57\u7b26\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
scala> str(0)\r\nres0: Char = H\r\n<\/code><\/pre>\n\u8fd9\u91cc\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u5b57\u7b26\uff0c\u800c\u4e0d\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\u3002<\/p>\n
scala> str(-1)\r\njava.lang.StringIndexOutOfBoundsException: String index out of range: -1\r\n at java.lang.String.charAt(String.java:658)\r\n at scala.collection.immutable.StringOps$.apply$extension(StringOps.scala:38)\r\n ... 33 elided\r\n\r\nscala> str.length\r\nres2: Int = 34\r\n\r\nscala> str(34)\r\njava.lang.StringIndexOutOfBoundsException: String index out of range: 34\r\n at java.lang.String.charAt(String.java:658)\r\n at scala.collection.immutable.StringOps$.apply$extension(StringOps.scala:38)\r\n\r\n ... 33 elided\r\n<\/code><\/pre>\n\u8bf7\u6ce8\u610f\uff1a\u5982\u679c\u6211\u4eec\u5c1d\u8bd5\u5728\u8d85\u51fa\u8303\u56f4\u7684\u4f4d\u7f6e\u8bbf\u95ee\u5b57\u7b26\u4e32\u7684\u5b57\u7b26\uff0c\u5c31\u4f1a\u51fa\u73b0StringIndexOutOfBoundsException\u5f02\u5e38\uff0c\u5982\u4e0a\u6240\u793a\u3002\u5b57\u7b26\u4e32\u7684\u5b57\u7b26\u8bbf\u95ee\u8fd4\u56deChar\uff0c\u800csubstring\u548cslice\u51fd\u6570\u8fd4\u56deString\uff0c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
scala> str(0)\r\nres4: Char = H\r\n\r\nscala> str.substring(0,1)\r\nres5: String = H\r\n\r\nscala> str.slice(0,1)\r\nres6: String = H\r\n<\/code><\/pre>\n\u8fd9\u5c31\u662f\u5173\u4e8e”Scala\u7684\u5207\u7247\u51fd\u6570”\u4f7f\u7528\u7684\u5168\u90e8\u5185\u5bb9\u3002\u5728\u6211\u7684\u63a5\u4e0b\u6765\u7684\u5e16\u5b50\u4e2d\uff0c\u6211\u4eec\u5c06\u8ba8\u8bba\u66f4\u591a\u7684Scala\u6982\u5ff5\u3002\u53c2\u8003\uff1aScala API\u6587\u6863\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u8fd9\u662f\u6587\u7ae0\u300aScala\u7684\u5207\u7247\u51fd\u6570\u300b\u7684\u7b2c1\u90e8\u5206\uff08\u51711\u90e8\u5206\uff09\u3002 \u5185\u5bb9\u7247\u6bb5: \u4eca\u5929\u6211\u4eec\u5c06\u7814\u7a76Scala\u7684\u5207\u7247\u51fd\u6570\u3002 S […]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1973,1970,1972,1008,1971],"class_list":{"0":"post-716","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-uncategorized","7":"tag-scala","10":"tag-1008","11":"tag-1971"},"yoast_head":"\n
Scala\u5207\u7247\u51fd\u6570\u5b8c\u5168\u6307\u5357\uff1a\u638c\u63e1slice()\u65b9\u6cd5\u7684\u7528\u6cd5\u4e0e\u5b9e\u4f8b - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u6df1\u5165\u4e86\u89e3Scala\u4e2d\u7684\u5207\u7247\u51fd\u6570slice()\u7684\u7528\u6cd5\u3001\u8bed\u6cd5\u548c\u5b9e\u4f8b\u3002\u672c\u6587\u8be6\u7ec6\u8bb2\u89e3\u5982\u4f55\u5728Scala\u7f16\u7a0b\u4e2d\u4f7f\u7528\u5207\u7247\u64cd\u4f5c\u5904\u7406\u96c6\u5408\u6570\u636e\uff0c\u9002\u5408Scala\u521d\u5b66\u8005\u548c\u8fdb\u9636\u5f00\u53d1\u8005\u53c2\u8003\u3002\" \/>\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\/scala\u7684\u5207\u7247\u51fd\u6570\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Scala\u5207\u7247\u51fd\u6570\u5b8c\u5168\u6307\u5357\uff1a\u638c\u63e1slice()\u65b9\u6cd5\u7684\u7528\u6cd5\u4e0e\u5b9e\u4f8b\" \/>\n<meta property=\"og:description\" content=\"\u6df1\u5165\u4e86\u89e3Scala\u4e2d\u7684\u5207\u7247\u51fd\u6570slice()\u7684\u7528\u6cd5\u3001\u8bed\u6cd5\u548c\u5b9e\u4f8b\u3002\u672c\u6587\u8be6\u7ec6\u8bb2\u89e3\u5982\u4f55\u5728Scala\u7f16\u7a0b\u4e2d\u4f7f\u7528\u5207\u7247\u64cd\u4f5c\u5904\u7406\u96c6\u5408\u6570\u636e\uff0c\u9002\u5408Scala\u521d\u5b66\u8005\u548c\u8fdb\u9636\u5f00\u53d1\u8005\u53c2\u8003\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/scala\u7684\u5207\u7247\u51fd\u6570\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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<\/div>\n def slice(from-index: Int, until-index: Int): ScalaAPIClass[A]\r\n<\/code><\/pre>\n\u8fd9\u91cc\u7684”ScalaAPIClass”\u662f\u6307\u4efb\u4f55\u652f\u6301\u57fa\u4e8e\u7d22\u5f15\u7684\u8bbf\u95ee\uff08\u4f8b\u5982Seq\u3001List\u7b49\uff09\u7684Scala\u96c6\u5408\u7c7b\u3001String\u548cArray\u7c7b\u3002\u4f8b\u5982\uff1a\u4e0b\u9762\u7684\u51fd\u6570\u5728Scala API\u7684Seq\u7c7b\u4e2d\u88ab\u5b9a\u4e49\u3002<\/p>\n
def slice(from-index: Int, until-index: Int): Seq[A]\r\n<\/code><\/pre>\n\u5207\u7247\u529f\u80fd\u53c2\u6570\uff1a\u4ee5\u4e0b\u8868\u683c\u63cf\u8ff0\u4e86”\u5207\u7247”\u529f\u80fd\u53c2\u6570\u7684\u7528\u6cd5\u3002<\/p>\n
\n\n\n\n\n\u5e8f\u53f7<\/th>\n \u51fd\u6570\u53c2\u6570<\/th>\n \u7528\u6cd5<\/th>\n<\/tr>\n<\/thead>\n \n\n1.<\/td>\n \u7b2c\u4e00\u4e2a\u53c2\u6570<\/td>\n \u8d77\u59cb\u7d22\u5f15\uff08\u5305\u542b\uff09\u3002\u5b83\u5e94\u8be5\u662f\u96f6\u6216\u4efb\u4f55\u5c0f\u4e8e\u96c6\u5408\u3001\u5b57\u7b26\u4e32\u6216\u6570\u7ec4\u957f\u5ea6\u7684\u6b63\u6574\u6570\u3002<\/td>\n<\/tr>\n \n2.<\/td>\n \u7b2c\u4e8c\u4e2a\u53c2\u6570<\/td>\n \u7ed3\u675f\u7d22\u5f15\uff08\u4e0d\u5305\u542b\uff09\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n\u5207\u7247\u51fd\u6570\u4ece”\u8d77\u59cb\u7d22\u5f15”\uff08\u5305\u542b\uff09\u63d0\u53d6\u5143\u7d20\uff0c\u76f4\u5230”\u7ec8\u6b62\u7d22\u5f15”\uff08\u4e0d\u5305\u542b\uff09\u3002\u8fd9\u91cc\u7684\u5143\u7d20\u53ef\u4ee5\u662f\u6570\u7ec4\u4e2d\u7684\u6570\u5b57\uff0c\u5b57\u7b26\u4e32\u4e2d\u7684\u5b57\u7b26\uff0c\u6216\u8005\u96c6\u5408\u4e2d\u7684\u5bf9\u8c61\u3002<\/p>\n
Scala \u6570\u7ec4\u5207\u7247<\/h3>\n
\u5728Scala API\u4e2d\uff0cArray\u7c7b\u5c06\u5207\u7247\u51fd\u6570\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n
def slice(from: Int, until: Int): Array[T]\r\n<\/code><\/pre>\n\u5728\u8fd9\u91cc\uff0c’from’\u662f\u6570\u7ec4\u7684\u8d77\u59cb\u7d22\u5f15\uff08\u5305\u542b\uff09\uff0c’until’\u662f\u6570\u7ec4\u7684\u7ed3\u675f\u7d22\u5f15\uff08\u4e0d\u5305\u542b\uff09\u3002\u6570\u7ec4\u5207\u7247\u51fd\u6570\u793a\u4f8b\uff1a<\/p>\n
scala> val marksArray = Array(56,79,60,99,71)\r\nmarksArray: Array[Int] = Array(56, 79, 60, 99, 71)\r\n<\/code><\/pre>\n\u73b0\u5728\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b5\u4e2a\u503c\u7684\u6574\u6570\u6570\u7ec4\uff0c\u5176\u7d22\u5f15\u5f00\u59cb\u7684\u503c\u4e3a0\uff0c\u7d22\u5f15\u7ed3\u675f\u7684\u503c\u4e3a4\u3002\u5b83\u7684\u957f\u5ea6\u4e3a5\u3002\u73b0\u5728\u8ba9\u6211\u4eec\u6765\u4f7f\u7528\u5207\u7247\u51fd\u6570\u3002<\/p>\n
scala> marksArray.slice(0,2)\r\nres0: Array[Int] = Array(56, 79)\r\n<\/code><\/pre>\n\u4ece0\u7d22\u5f15\u5f00\u59cb\uff0c\u5373\u7b2c\u4e00\u4e2a\u5143\u7d20\uff0c\u5e76\u68c0\u7d22\u6240\u6709\u5143\u7d20\u76f4\u52302\uff0c\u8fd9\u610f\u5473\u7740\u7d22\u5f15\u4e3a1\uff0c\u6240\u4ee5\u6211\u4eec\u5728\u8fd9\u91cc\u5f97\u5230\u4e86\u7b2c0\u4e2a\u5143\u7d20\u548c\u7b2c1\u4e2a\u5143\u7d20\u3002<\/p>\n
scala> marksArray.slice(3,4)\r\nres1: Array[Int] = Array(99)\r\n<\/code><\/pre>\n\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4efb\u4f55\u7d22\u5f15\u8303\u56f4\u8fdb\u884c\u8bbf\u95ee\u3002<\/p>\n
scala> marksArray.slice(3,3)\r\nres2: Array[Int] = Array()\r\n<\/code><\/pre>\n\u5982\u679c\u6211\u4eec\u50cf\u4e0a\u9762\u90a3\u6837\u7ed9\u51fa\u76f8\u540c\u7684\u8d77\u59cb\u548c\u7ed3\u675f\u503c\uff0c\u6211\u4eec\u4f1a\u5f97\u5230\u4e00\u4e2a\u7a7a\u6570\u7ec4\uff0c\u4e3a\u4ec0\u4e48\uff1f\u8d77\u59cb\u7d22\u5f15 = 3\uff0c\u7ed3\u675f\u7d22\u5f15 = 3 – 1 = 2\uff0c\u4e0d\u53ef\u80fd\u4ece\u7d22\u5f153\u52302\u4e4b\u95f4\u68c0\u7d22\u4e00\u7ec4\u5143\u7d20\u5bf9\u5427\u3002<\/p>\n
scala> marksArray.slice(-1,3)\r\nres3: Array[Int] = Array(56, 79, 60)\r\n<\/code><\/pre>\n\u5982\u679c\u6211\u4eec\u7ed9\u51fa\u8d1f\u503c\uff0c\u5219\u7d22\u5f15\u503c\u5c06\u4ece\u6240\u793a\u7684\u53ef\u7528\u7d22\u5f15\u5f00\u59cb\u3002<\/p>\n
scala> marksArray.slice(0,5)\r\n\r\nres4: Array[Int] = Array(56, 79, 60, 99, 71)\r\n<\/code><\/pre>\n\u5982\u679c\u6211\u4eec\u5728\u8d85\u51fa\u53ef\u7528\u7d22\u5f15\u7684\u8303\u56f4\u5185\u7ed9\u51fa\u7b2c\u4e8c\u4e2a\u53c2\u6570\u7684\u503c\uff0c\u5982\u4e0a\u6240\u793a\uff08marksArray\u7684\u53ef\u7528\u6700\u5927\u7d22\u5f15\u503c\u4ec5\u4e3a4\uff0c\u56e0\u4e3a\u5176\u957f\u5ea6\u4e3a5\uff09\uff0c\u5b83\u5c06\u5ffd\u7565\u8be5\u503c\u5e76\u8fd4\u56de\u5230\u53ef\u7528\u7d22\u5f15\u4e3a\u6b62\u3002\u6ce8\u610f\uff1a\u4e0eJava\u4e0d\u540c\uff0c\u5b83\u4e0d\u4f1a\u629b\u51fa\u4efb\u4f55ArrayIndexOutOfBoundsException\u5f02\u5e38\u3002<\/p>\n
Scala\u96c6\u5408\u5207\u7247<\/h3>\n
\u5728Scala\u7684\u6807\u51c6API\u4e2d\uff0c\u5927\u591a\u6570\u7684\u7c7b\u90fd\u5b9a\u4e49\u4e86slice\u51fd\u6570\uff0c\u7528\u4e8e\u652f\u6301\u57fa\u4e8e\u7d22\u5f15\u7684\u5143\u7d20\u8bbf\u95ee\u3002\u4f8b\u5982\uff0cList\u7c7b\u5982\u4e0b\u6240\u793a\u5b9a\u4e49\u4e86\u8fd9\u4e2a\u51fd\u6570\u3002<\/p>\n
def slice(from: Int, until: Int): List[A]\r\n<\/code><\/pre>\n\u5207\u7247\u51fd\u6570\u7684\u793a\u4f8b\uff1a\u4e0e\u6570\u7ec4\u793a\u4f8b\u76f8\u540c\uff0c\u5bf9\u4e8e\u4efb\u4f55\u96c6\u5408API\uff0c\u6211\u4eec\u5c06\u83b7\u5f97\u76f8\u540c\u7684\u7ed3\u679c\u3002<\/p>\n
scala> val list = List(56, 79, 60, 99, 71)\r\nlist: List[Int] = List(56, 79, 60, 99, 71)\r\n\r\nscala> list.slice(0,2)\r\nres5: List[Int] = List(56, 79)\r\n\r\nscala> list.slice(3,4)\r\nres6: List[Int] = List(99)\r\n\r\nscala> list.slice(3,3)\r\nres7: List[Int] = List()\r\n\r\nscala> list.slice(-1,3)\r\nres8: List[Int] = List(56, 79, 60)\r\n\r\nscala> list.slice(0,5)\r\nres9: List[Int] = List(56, 79, 60, 99, 71)\r\n<\/code><\/pre>\n\u5982\u679c\u6211\u4eec\u8bbf\u95ee\u4e00\u4e2a\u7a7a\u5217\u8868\uff0c\u6211\u4eec\u53ea\u4f1a\u5f97\u5230\u4e00\u4e2a\u7a7a\u5217\u8868\uff0c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
scala> val list2 = List()\r\nlist2: List[Nothing] = List()\r\n\r\nscala> list2.slice(0,1)\r\n\r\nres10: List[Nothing] = List()\r\n<\/code><\/pre>\nScala\u7684\u5b57\u7b26\u4e32\u5207\u7247<\/h3>\n
\u5728Scala API\u4e2d\uff0c”StringOps”\u7c7b\u5b9a\u4e49\u5728scala.collection.immutable\u5305\u4e2d\u3002\u5b83\u5c06slice\u51fd\u6570\u5b9a\u4e49\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
def slice(from: Int, until: Int): String\r\n<\/code><\/pre>\n\u6ce8\u610f\uff1a\u5728Scala\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528Java\u7684String\u7c7b\u3002\u4f46\u662f\u8fd9\u4e2a\u7c7b\u6ca1\u6709\u5207\u7247\u51fd\u6570\u3002\u5f53\u6211\u4eec\u5728Java\u7684String\u5bf9\u8c61\u4e0a\u4f7f\u7528\u5207\u7247\u51fd\u6570\u65f6\uff0cScala\u7f16\u8bd1\u5668\u4f1a\u81ea\u52a8\u5c06\u8be5String\u5bf9\u8c61\u8f6c\u6362\u4e3aStringOps\u7c7b\u5bf9\u8c61\uff0c\u4ee5\u4f7f\u7528\u8be5\u5207\u7247\u51fd\u6570\u3002\uff08\u4e0d\u4ec5\u6709\u5207\u7247\u51fd\u6570\uff0c\u8fd8\u6709\u5176\u4ed6\u51fd\u6570\u3002\u8bf7\u53c2\u8003Scala API\u83b7\u53d6\u66f4\u591a\u4fe1\u606f\u3002\uff09\u8fd9\u610f\u5473\u7740”StringOps”\u662fString\u7c7b\u7684\u4e00\u4e2a\u9690\u5f0f\u7c7b\u3002String\u5207\u7247\u51fd\u6570\u7684\u793a\u4f8b\uff1a<\/p>\n
scala> val str = \"Hello I'm doing good. How are you?\"\r\nstr: String = Hello I'm doing good. How are you?\r\n\r\nscala> str.slice(6,9)\r\n\r\nres8: String = I'm\r\n<\/code><\/pre>\n\u6211\u4eec\u77e5\u9053\uff0c\u5728\u5b57\u7b26\u4e32\u4e2d\u7d22\u5f15\u4ece\u96f6\u5f00\u59cb\u3002\u8fd9\u91cc\u7684\u8d77\u59cb\u7d22\u5f15\u4e3a6\u610f\u5473\u7740\u7ed3\u675f\u7d22\u5f15\u4e3a9\uff08\u7531\u4e8e\u662f\u6392\u9664\u6027\u7684\uff0c\u6240\u4ee5\u6211\u4eec\u53ea\u9700\u8981\u8003\u8651\u7ed3\u675f\u7d22\u5f15\u4e3a8\uff09\u3002\u5b57\u7b26\u4e32\u7684\u5b50\u4e32\u51fd\u6570\u4e0e\u5207\u7247\u51fd\u6570\u7684\u5de5\u4f5c\u65b9\u5f0f\u76f8\u540c\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
scala> str.substring(6,9)\r\nres12: String = I'm\r\n<\/code><\/pre>\n\u8fd9\u91cc\u7684str.slice(6,9)\u548cstr.substring(6,9)\u90fd\u8fd4\u56de\u76f8\u540c\u7684\u503c\u3002slice\u4e0esubstring\u662fString\u7c7b\u4e2d\u7684\u51fd\u6570\uff0c\u5b83\u4eec\u4e4b\u95f4\u7684\u533a\u522b\u662f\u4ec0\u4e48\uff1f<\/p>\n
\n- \u5728\u529f\u80fd\u548c\u8bed\u6cd5\u65b9\u9762\u6ca1\u6709\u533a\u522b<\/li>\n
- \u6027\u80fd\u51e0\u4e4e\u76f8\u4f3c\uff0c\u5dee\u5f02\u53ef\u4ee5\u5ffd\u7565\u3002<\/li>\n<\/ul>\n
\u6ce8\u610f\uff1a\u5728 Scala \u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u50cf\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u4e00\u6837\u8bbf\u95ee\u5b57\u7b26\u4e32\u7684\u5b57\u7b26\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
scala> str(0)\r\nres0: Char = H\r\n<\/code><\/pre>\n\u8fd9\u91cc\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u5b57\u7b26\uff0c\u800c\u4e0d\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\u3002<\/p>\n
scala> str(-1)\r\njava.lang.StringIndexOutOfBoundsException: String index out of range: -1\r\n at java.lang.String.charAt(String.java:658)\r\n at scala.collection.immutable.StringOps$.apply$extension(StringOps.scala:38)\r\n ... 33 elided\r\n\r\nscala> str.length\r\nres2: Int = 34\r\n\r\nscala> str(34)\r\njava.lang.StringIndexOutOfBoundsException: String index out of range: 34\r\n at java.lang.String.charAt(String.java:658)\r\n at scala.collection.immutable.StringOps$.apply$extension(StringOps.scala:38)\r\n\r\n ... 33 elided\r\n<\/code><\/pre>\n\u8bf7\u6ce8\u610f\uff1a\u5982\u679c\u6211\u4eec\u5c1d\u8bd5\u5728\u8d85\u51fa\u8303\u56f4\u7684\u4f4d\u7f6e\u8bbf\u95ee\u5b57\u7b26\u4e32\u7684\u5b57\u7b26\uff0c\u5c31\u4f1a\u51fa\u73b0StringIndexOutOfBoundsException\u5f02\u5e38\uff0c\u5982\u4e0a\u6240\u793a\u3002\u5b57\u7b26\u4e32\u7684\u5b57\u7b26\u8bbf\u95ee\u8fd4\u56deChar\uff0c\u800csubstring\u548cslice\u51fd\u6570\u8fd4\u56deString\uff0c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
scala> str(0)\r\nres4: Char = H\r\n\r\nscala> str.substring(0,1)\r\nres5: String = H\r\n\r\nscala> str.slice(0,1)\r\nres6: String = H\r\n<\/code><\/pre>\n\u8fd9\u5c31\u662f\u5173\u4e8e”Scala\u7684\u5207\u7247\u51fd\u6570”\u4f7f\u7528\u7684\u5168\u90e8\u5185\u5bb9\u3002\u5728\u6211\u7684\u63a5\u4e0b\u6765\u7684\u5e16\u5b50\u4e2d\uff0c\u6211\u4eec\u5c06\u8ba8\u8bba\u66f4\u591a\u7684Scala\u6982\u5ff5\u3002\u53c2\u8003\uff1aScala API\u6587\u6863\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u8fd9\u662f\u6587\u7ae0\u300aScala\u7684\u5207\u7247\u51fd\u6570\u300b\u7684\u7b2c1\u90e8\u5206\uff08\u51711\u90e8\u5206\uff09\u3002 \u5185\u5bb9\u7247\u6bb5: \u4eca\u5929\u6211\u4eec\u5c06\u7814\u7a76Scala\u7684\u5207\u7247\u51fd\u6570\u3002 S […]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1973,1970,1972,1008,1971],"class_list":{"0":"post-716","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-uncategorized","7":"tag-scala","10":"tag-1008","11":"tag-1971"},"yoast_head":"\n
Scala\u5207\u7247\u51fd\u6570\u5b8c\u5168\u6307\u5357\uff1a\u638c\u63e1slice()\u65b9\u6cd5\u7684\u7528\u6cd5\u4e0e\u5b9e\u4f8b - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u6df1\u5165\u4e86\u89e3Scala\u4e2d\u7684\u5207\u7247\u51fd\u6570slice()\u7684\u7528\u6cd5\u3001\u8bed\u6cd5\u548c\u5b9e\u4f8b\u3002\u672c\u6587\u8be6\u7ec6\u8bb2\u89e3\u5982\u4f55\u5728Scala\u7f16\u7a0b\u4e2d\u4f7f\u7528\u5207\u7247\u64cd\u4f5c\u5904\u7406\u96c6\u5408\u6570\u636e\uff0c\u9002\u5408Scala\u521d\u5b66\u8005\u548c\u8fdb\u9636\u5f00\u53d1\u8005\u53c2\u8003\u3002\" \/>\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\/scala\u7684\u5207\u7247\u51fd\u6570\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Scala\u5207\u7247\u51fd\u6570\u5b8c\u5168\u6307\u5357\uff1a\u638c\u63e1slice()\u65b9\u6cd5\u7684\u7528\u6cd5\u4e0e\u5b9e\u4f8b\" \/>\n<meta property=\"og:description\" content=\"\u6df1\u5165\u4e86\u89e3Scala\u4e2d\u7684\u5207\u7247\u51fd\u6570slice()\u7684\u7528\u6cd5\u3001\u8bed\u6cd5\u548c\u5b9e\u4f8b\u3002\u672c\u6587\u8be6\u7ec6\u8bb2\u89e3\u5982\u4f55\u5728Scala\u7f16\u7a0b\u4e2d\u4f7f\u7528\u5207\u7247\u64cd\u4f5c\u5904\u7406\u96c6\u5408\u6570\u636e\uff0c\u9002\u5408Scala\u521d\u5b66\u8005\u548c\u8fdb\u9636\u5f00\u53d1\u8005\u53c2\u8003\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/scala\u7684\u5207\u7247\u51fd\u6570\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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