\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u5404API\u3092\u53d6\u308a\u4e0a\u3052\u3001\u9069\u5207\u306a\u4f8b\u3092\u4f7f\u3063\u3066\u8a73\u3057\u304f\u8b70\u8ad6\u3057\u307e\u3059\u3002<\/p>\n
\u30b9\u30ab\u30e9\u306e\u30b9\u30e9\u30a4\u30b9\u95a2\u6570\u306e\u4f7f\u7528\u65b9\u6cd5\u306f\uff1a<\/h3>\n![\"Scala](\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/656491f4daa94e2bdf7be8a5\/6-0.jpeg\" "\\"\\"")
<\/div>\n def slice(from-index: Int, until-index: Int): ScalaAPIClass[A]\r\n<\/code><\/pre>\n\u3053\u3053\u3067\u306e\u300cScalaAPIClass\u300d\u306f\u3001Seq\u3084List\u306a\u3069\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u30d9\u30fc\u30b9\u306e\u30a2\u30af\u30bb\u30b9\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u4efb\u610f\u306eScala\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u30af\u30e9\u30b9\u3001String\u3001Array\u30af\u30e9\u30b9\u3092\u6307\u3057\u307e\u3059\u3002\u4f8b\uff1a\u4ee5\u4e0b\u306e\u95a2\u6570\u306fScala API\u306eSeq\u30af\u30e9\u30b9\u306b\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
def slice(from-index: Int, until-index: Int): Seq[A]\r\n<\/code><\/pre>\n\u30b9\u30e9\u30a4\u30b9\u95a2\u6570\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc: \u300c\u30b9\u30e9\u30a4\u30b9\u300d\u95a2\u6570\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u306e\u4f7f\u7528\u65b9\u6cd5\u306f\u3001\u4ee5\u4e0b\u306e\u8868\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
\n\n\n\n\nS.No<\/a>.<\/th>\n Function Params<\/th>\n Usage<\/th>\n<\/tr>\n<\/thead>\n \n\n1.<\/td>\n First Parameter<\/td>\n Starting index (Inclusive). It should be zero or any any positive integer less than the length of the Collection or String or Array.<\/td>\n<\/tr>\n \n2.<\/td>\n Second Parameter<\/td>\n Ending index (Exclusive).<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n\u300c\u30b9\u30e9\u30a4\u30b9\u300d\u95a2\u6570\u306f\u3001\u8981\u7d20\u306e\u62bd\u51fa\u3092\u884c\u3044\u307e\u3059\u3002\u6700\u521d\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff08\u542b\u3080\uff09\u304b\u3089\u3001\u6307\u5b9a\u3057\u305f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u307e\u3067\uff08\u542b\u307e\u305a\uff09\u306e\u8981\u7d20\u304c\u62bd\u51fa\u3055\u308c\u307e\u3059\u3002\u62bd\u51fa\u306e\u5bfe\u8c61\u306f\u3001\u6570\u5024\u306e\u914d\u5217\u3001\u6587\u5b57\u5217\u306e\u6587\u5b57\u3001\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3059\u3002<\/p>\n
\u30b9\u30ab\u30e9\u306e\u30a2\u30ec\u30a4\u30b9\u30e9\u30a4\u30b9\u3092\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u308b\u3068\u300c\u30b9\u30ab\u30e9\u914d\u5217\u306e\u4e00\u90e8\u5206\u300d\u3067\u3059\u3002<\/h3>\n
Scala API\u306b\u304a\u3044\u3066\u3001Array\u30af\u30e9\u30b9\u306f\u30b9\u30e9\u30a4\u30b9\u95a2\u6570\u3092\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
def slice(from: Int, until: Int): Array[T]\r\n<\/code><\/pre>\n\u3053\u3053\u3067\u300cfrom\u300d\u306f\u914d\u5217\u306e\u5148\u982d\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff08\u542b\u3080\uff09\u3001\u305d\u3057\u3066\u300cuntil\u300d\u306f\u914d\u5217\u306e\u7d42\u4e86\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff08\u542b\u307e\u305a\uff09\u3092\u8868\u3057\u307e\u3059\u3002\u914d\u5217\u30b9\u30e9\u30a4\u30b9\u306e\u95a2\u6570\u306e\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>\n5\u3064\u306e\u5024\u3092\u6301\u3064\u914d\u5217\u306e\u6574\u6570\u304c\u4f5c\u6210\u3055\u308c\u3001\u305d\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u59cb\u307e\u308a\u306e\u5024\u306f0\u3067\u3042\u308a\u3001\u7d42\u308f\u308a\u306e\u5024\u306f4\u3067\u3059\u3002\u305d\u306e\u9577\u3055\u306f5\u3067\u3059\u3002\u4eca\u3001\u30b9\u30e9\u30a4\u30b9\u6a5f\u80fd\u3092\u4f7f\u3063\u3066\u904a\u3073\u307e\u3057\u3087\u3046\u3002<\/p>\n
scala> marksArray.slice(0,2)\r\nres0: Array[Int] = Array(56, 79)\r\n<\/code><\/pre>\n\u6700\u521d\u306e\u8981\u7d20\u306f0\u756a\u76ee\u3068\u306a\u308a\u30012\u307e\u3067\u306e\u8981\u7d20\u304c\u53d6\u5f97\u3055\u308c\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304c1\u306e\u305f\u3081\u30010\u756a\u76ee\u306e\u8981\u7d20\u30681\u756a\u76ee\u306e\u8981\u7d20\u304c\u3053\u3053\u3067\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n
scala> marksArray.slice(3,4)\r\nres1: Array[Int] = Array(99)\r\n<\/code><\/pre>\n\u4efb\u610f\u306e\u7bc4\u56f2\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3067\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u3059\u3002<\/p>\n
scala> marksArray.slice(3,3)\r\nres2: Array[Int] = Array()\r\n<\/code><\/pre>\n\u4e0a\u8a18\u306e\u3088\u3046\u306b\u958b\u59cb\u3068\u7d42\u4e86\u306b\u540c\u3058\u5024\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u3001\u7a7a\u306e\u914d\u5217\u304c\u5f97\u3089\u308c\u307e\u3059\u304c\u3001\u306a\u305c\u3067\u3057\u3087\u3046\u304b\uff1f \u958b\u59cb\u30a4\u30f3\u30c7\u30c3\u30af\u30b9=3 \u7d42\u4e86\u30a4\u30f3\u30c7\u30c3\u30af\u30b9=3-1=2\u3067\u3059\u3002 3\u304b\u30892\u307e\u3067\u306e\u7bc4\u56f2\u304b\u3089\u914d\u5217\u306e\u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n
scala> marksArray.slice(-1,3)\r\nres3: Array[Int] = Array(56, 79, 60)\r\n<\/code><\/pre>\n\u8ca0\u306e\u5024\u3092\u4e0e\u3048\u308b\u3068\u3001\u4e0a\u8a18\u306e\u5229\u7528\u53ef\u80fd\u306a\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304b\u3089\u59cb\u307e\u308b\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\u4e0a\u8a18\u306e\u4f8b\u3067\u3001\u5229\u7528\u53ef\u80fd\u306a\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u8d85\u3048\u30662\u756a\u76ee\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u306e\u5024\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\uff08marksArray\u306e\u5229\u7528\u53ef\u80fd\u306a\u6700\u5927\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f5\u3067\u3001\u9577\u3055\u306f5\u3067\u3042\u308b\u305f\u3081\uff09\u3001\u305d\u306e\u5024\u306f\u7121\u8996\u3055\u308c\u3001\u5229\u7528\u53ef\u80fd\u306a\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u307e\u3067\u306e\u7d50\u679c\u306e\u307f\u304c\u8fd4\u3055\u308c\u307e\u3059\u3002\u6ce8\u610f\uff1aJava\u3068\u306f\u7570\u306a\u308a\u3001ArrayIndexOutOfBoundsException\u306f\u767a\u751f\u3057\u307e\u305b\u3093\u3002<\/p>\n
\u30b9\u30ab\u30e9\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u306e\u30b9\u30e9\u30a4\u30b9<\/h3>\n
Scala\u306e\u6a19\u6e96API\u3067\u306f\u3001\u307b\u3068\u3093\u3069\u306e\u30af\u30e9\u30b9\u304c\u3053\u306e\u30b9\u30e9\u30a4\u30b9\u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u3066\u304a\u308a\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u30d9\u30fc\u30b9\u306e\u8981\u7d20\u30a2\u30af\u30bb\u30b9\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001List\u30af\u30e9\u30b9\u306f\u6b21\u306e\u3088\u3046\u306b\u3053\u306e\u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
def slice(from: Int, until: Int): List[A]\r\n<\/code><\/pre>\n\u30ea\u30b9\u30c8\u306e\u30b9\u30e9\u30a4\u30b9\u95a2\u6570\u306e\u4f8b\uff1a- \u914d\u5217\u306e\u4f8b\u3068\u540c\u69d8\u306b\u3001\u3069\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3API\u3067\u3082\u540c\u3058\u7d50\u679c\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\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\u3082\u3057\u7a7a\u306e\u30ea\u30b9\u30c8\u3092\u30a2\u30af\u30bb\u30b9\u3059\u308b\u5834\u5408\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5e38\u306b\u7a7a\u306e\u30ea\u30b9\u30c8\u304c\u8fd4\u3055\u308c\u307e\u3059\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\u306eString\u306e\u4e00\u90e8\u3092\u5207\u308a\u53d6\u308b<\/h3>\n
Scala API\u3067\u306f\u3001\u300cStringOps\u300d\u3068\u3044\u3046\u30af\u30e9\u30b9\u304cscala.collection.immutable\u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u793a\u3059\u3088\u3046\u306b\u3001\u305d\u308c\u306f\u30b9\u30e9\u30a4\u30b9\u6a5f\u80fd\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
def slice(from: Int, until: Int): String\r\n<\/code><\/pre>\n\u6ce8\u610f\uff1aScala\u3067\u306f\u3001Java\u306eString\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u3053\u306e\u30af\u30e9\u30b9\u306b\u306fslice\u95a2\u6570\u306f\u3042\u308a\u307e\u305b\u3093\u3002Java\u306eString\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067slice\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001Scala\u306e\u30b3\u30f3\u30d1\u30a4\u30e9\u306f\u5185\u90e8\u3067\u3053\u306eString\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092StringOps\u30af\u30e9\u30b9\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5909\u63db\u3057\u3066\u304b\u3089\u3053\u306eslice\u95a2\u6570\u3092\u4f7f\u7528\u3057\u307e\u3059\uff08slice\u95a2\u6570\u3060\u3051\u3067\u306a\u304f\u3001\u4ed6\u306b\u3082\u591a\u304f\u306e\u6a5f\u80fd\u304c\u3042\u308a\u307e\u3059\u3002\u8a73\u7d30\u306fScala API\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\uff09\u3002\u3064\u307e\u308a\u3001\u300cStringOps\u300d\u306fString\u30af\u30e9\u30b9\u306e\u6697\u9ed9\u306e\u30af\u30e9\u30b9\u3067\u3059\u3002String\u306eslice\u95a2\u6570\u306e\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\u79c1\u305f\u3061\u306f\u77e5\u3063\u3066\u3044\u308b\u901a\u308a\u3001\u6587\u5b57\u5217\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f\u30bc\u30ed\u304b\u3089\u59cb\u307e\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u3001from-index = 6 \u3068\u306f\u3001until-index = 9 \u3092\u610f\u5473\u3057\u307e\u3059\uff08\u3057\u304b\u3057\u3001\u3053\u308c\u306f\u9664\u5916\u3055\u308c\u308b\u305f\u3081\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9 8 \u307e\u3067\u3092\u8003\u616e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff09\u3002\u6587\u5b57\u5217\u306e substring \u95a2\u6570\u306f\u3001\u4ee5\u4e0b\u306b\u793a\u3059\u3088\u3046\u306b slice \u95a2\u6570\u3068\u540c\u69d8\u306b\u6a5f\u80fd\u3057\u307e\u3059\u3002<\/p>\n
scala> str.substring(6,9)\r\nres12: String = I'm\r\n<\/code><\/pre>\n\u3053\u3053\u3067\u306f\u3001str.slice(6,9)\u3068str.substring(6,9)\u306f\u540c\u3058\u5024\u3092\u8fd4\u3057\u3066\u3044\u307e\u3059\u3002String\u30af\u30e9\u30b9\u306eslice\u3068substring\u95a2\u6570\u306e\u9055\u3044<\/p>\n
\n- Functionality wise and syntax wise there is no difference<\/li>\n
- Performance is almost similar and ignorable.<\/li>\n<\/ul>\n
Scala\u3067\u306f\u3001\u4ee5\u4e0b\u306b\u793a\u3059\u3088\u3046\u306b\u3001String\u306e\u6587\u5b57\u306b\u306f\u914d\u5217\u8981\u7d20\u3068\u540c\u3058\u3088\u3046\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u3059\u3002<\/p>\n
scala> str(0)\r\nres0: Char = H\r\n<\/code><\/pre>\nChar\u3092\u8fd4\u3057\u307e\u3059\u304c\u3001String\u3067\u306f\u3042\u308a\u307e\u305b\u3093\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\u6ce8\u610f\uff1a\u6587\u5b57\u5217\u306e\u7bc4\u56f2\u5916\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u3001\u4e0a\u8a18\u306e\u3088\u3046\u306bStringIndexOutOfBoundsException\u304c\u767a\u751f\u3057\u307e\u3059\u3002\u6587\u5b57\u5217\u306e\u6587\u5b57\u3078\u306e\u30a2\u30af\u30bb\u30b9\u306fChar\u3092\u8fd4\u3057\u3001substring\u3084slice\u95a2\u6570\u306fString\u3092\u8fd4\u3059\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\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\u3053\u308c\u304c\u300cScala\u306e\u30b9\u30e9\u30a4\u30b9\u95a2\u6570\u300d\u306e\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u3060\u3063\u305f\u3002\u79c1\u306e\u6b21\u306e\u6295\u7a3f\u3067\u3001\u3082\u3063\u3068Scala\u306e\u6982\u5ff5\u306b\u3064\u3044\u3066\u8b70\u8ad6\u3057\u307e\u3059\u3002\u53c2\u8003\u6587\u732e\uff1aScala API Doc<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4eca\u65e5\u306f\u3001Scala\u306eslice\u95a2\u6570\u306b\u3064\u3044\u3066\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002 \u30b9\u30ab\u30e9\u30b9\u30e9\u30a4\u30b9 \u4ee5\u4e0b\u306eAPI\u30af\u30e9\u30b9\u306b\u306f\u3001Scala\u306e\u30b9\u30e9\u30a4\u30b9\u95a2\u6570\u304c\u5229\u7528\u53ef\u80fd\u3067\u3059\u3002 Scala Array API String API Scala Collec […]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-602","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"\n
\u30b9\u30ab\u30e9\u306e\u30b9\u30e9\u30a4\u30b9\u95a2\u6570\u3092\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u308b\u3068\uff1a\u300c\u30b9\u30ab\u30e9\u306e\u30b9\u30e9\u30a4\u30b9\u6a5f\u80fd\u300d - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u30b9\u30ab\u30e9\u306e\u30b9\u30e9\u30a4\u30b9\u95a2\u6570\u3092\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u308b\u3068\uff1a\u300c\u30b9\u30ab\u30e9\u306e\u30b9\u30e9\u30a4\u30b9\u6a5f\u80fd\u300d\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\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\/ja\/blog\/\u30b9\u30ab\u30e9\u306e\u30b9\u30e9\u30a4\u30b9\u95a2\u6570\u3092\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u308b\u3068\uff1a\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u30b9\u30ab\u30e9\u306e\u30b9\u30e9\u30a4\u30b9\u95a2\u6570\u3092\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u308b\u3068\uff1a\u300c\u30b9\u30ab\u30e9\u306e\u30b9\u30e9\u30a4\u30b9\u6a5f\u80fd\u300d\" \/>\n<meta property=\"og:description\" content=\"\u30b9\u30ab\u30e9\u306e\u30b9\u30e9\u30a4\u30b9\u95a2\u6570\u3092\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u308b\u3068\uff1a\u300c\u30b9\u30ab\u30e9\u306e\u30b9\u30e9\u30a4\u30b9\u6a5f\u80fd\u300d\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/\u30b9\u30ab\u30e9\u306e\u30b9\u30e9\u30a4\u30b9\u95a2\u6570\u3092\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u308b\u3068\uff1a\/\" \/>\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\u3053\u3053\u3067\u306e\u300cScalaAPIClass\u300d\u306f\u3001Seq\u3084List\u306a\u3069\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u30d9\u30fc\u30b9\u306e\u30a2\u30af\u30bb\u30b9\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u4efb\u610f\u306eScala\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u30af\u30e9\u30b9\u3001String\u3001Array\u30af\u30e9\u30b9\u3092\u6307\u3057\u307e\u3059\u3002\u4f8b\uff1a\u4ee5\u4e0b\u306e\u95a2\u6570\u306fScala API\u306eSeq\u30af\u30e9\u30b9\u306b\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
def slice(from-index: Int, until-index: Int): Seq[A]\r\n<\/code><\/pre>\n\u30b9\u30e9\u30a4\u30b9\u95a2\u6570\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc: \u300c\u30b9\u30e9\u30a4\u30b9\u300d\u95a2\u6570\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u306e\u4f7f\u7528\u65b9\u6cd5\u306f\u3001\u4ee5\u4e0b\u306e\u8868\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
\n\n\n\n\nS.No<\/a>.<\/th>\n Function Params<\/th>\n Usage<\/th>\n<\/tr>\n<\/thead>\n \n\n1.<\/td>\n First Parameter<\/td>\n Starting index (Inclusive). It should be zero or any any positive integer less than the length of the Collection or String or Array.<\/td>\n<\/tr>\n \n2.<\/td>\n Second Parameter<\/td>\n Ending index (Exclusive).<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n\u300c\u30b9\u30e9\u30a4\u30b9\u300d\u95a2\u6570\u306f\u3001\u8981\u7d20\u306e\u62bd\u51fa\u3092\u884c\u3044\u307e\u3059\u3002\u6700\u521d\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff08\u542b\u3080\uff09\u304b\u3089\u3001\u6307\u5b9a\u3057\u305f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u307e\u3067\uff08\u542b\u307e\u305a\uff09\u306e\u8981\u7d20\u304c\u62bd\u51fa\u3055\u308c\u307e\u3059\u3002\u62bd\u51fa\u306e\u5bfe\u8c61\u306f\u3001\u6570\u5024\u306e\u914d\u5217\u3001\u6587\u5b57\u5217\u306e\u6587\u5b57\u3001\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3059\u3002<\/p>\n
\u30b9\u30ab\u30e9\u306e\u30a2\u30ec\u30a4\u30b9\u30e9\u30a4\u30b9\u3092\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u308b\u3068\u300c\u30b9\u30ab\u30e9\u914d\u5217\u306e\u4e00\u90e8\u5206\u300d\u3067\u3059\u3002<\/h3>\n
Scala API\u306b\u304a\u3044\u3066\u3001Array\u30af\u30e9\u30b9\u306f\u30b9\u30e9\u30a4\u30b9\u95a2\u6570\u3092\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
def slice(from: Int, until: Int): Array[T]\r\n<\/code><\/pre>\n\u3053\u3053\u3067\u300cfrom\u300d\u306f\u914d\u5217\u306e\u5148\u982d\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff08\u542b\u3080\uff09\u3001\u305d\u3057\u3066\u300cuntil\u300d\u306f\u914d\u5217\u306e\u7d42\u4e86\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff08\u542b\u307e\u305a\uff09\u3092\u8868\u3057\u307e\u3059\u3002\u914d\u5217\u30b9\u30e9\u30a4\u30b9\u306e\u95a2\u6570\u306e\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>\n5\u3064\u306e\u5024\u3092\u6301\u3064\u914d\u5217\u306e\u6574\u6570\u304c\u4f5c\u6210\u3055\u308c\u3001\u305d\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u59cb\u307e\u308a\u306e\u5024\u306f0\u3067\u3042\u308a\u3001\u7d42\u308f\u308a\u306e\u5024\u306f4\u3067\u3059\u3002\u305d\u306e\u9577\u3055\u306f5\u3067\u3059\u3002\u4eca\u3001\u30b9\u30e9\u30a4\u30b9\u6a5f\u80fd\u3092\u4f7f\u3063\u3066\u904a\u3073\u307e\u3057\u3087\u3046\u3002<\/p>\n
scala> marksArray.slice(0,2)\r\nres0: Array[Int] = Array(56, 79)\r\n<\/code><\/pre>\n\u6700\u521d\u306e\u8981\u7d20\u306f0\u756a\u76ee\u3068\u306a\u308a\u30012\u307e\u3067\u306e\u8981\u7d20\u304c\u53d6\u5f97\u3055\u308c\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304c1\u306e\u305f\u3081\u30010\u756a\u76ee\u306e\u8981\u7d20\u30681\u756a\u76ee\u306e\u8981\u7d20\u304c\u3053\u3053\u3067\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n
scala> marksArray.slice(3,4)\r\nres1: Array[Int] = Array(99)\r\n<\/code><\/pre>\n\u4efb\u610f\u306e\u7bc4\u56f2\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3067\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u3059\u3002<\/p>\n
scala> marksArray.slice(3,3)\r\nres2: Array[Int] = Array()\r\n<\/code><\/pre>\n\u4e0a\u8a18\u306e\u3088\u3046\u306b\u958b\u59cb\u3068\u7d42\u4e86\u306b\u540c\u3058\u5024\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u3001\u7a7a\u306e\u914d\u5217\u304c\u5f97\u3089\u308c\u307e\u3059\u304c\u3001\u306a\u305c\u3067\u3057\u3087\u3046\u304b\uff1f \u958b\u59cb\u30a4\u30f3\u30c7\u30c3\u30af\u30b9=3 \u7d42\u4e86\u30a4\u30f3\u30c7\u30c3\u30af\u30b9=3-1=2\u3067\u3059\u3002 3\u304b\u30892\u307e\u3067\u306e\u7bc4\u56f2\u304b\u3089\u914d\u5217\u306e\u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n
scala> marksArray.slice(-1,3)\r\nres3: Array[Int] = Array(56, 79, 60)\r\n<\/code><\/pre>\n\u8ca0\u306e\u5024\u3092\u4e0e\u3048\u308b\u3068\u3001\u4e0a\u8a18\u306e\u5229\u7528\u53ef\u80fd\u306a\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304b\u3089\u59cb\u307e\u308b\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\u4e0a\u8a18\u306e\u4f8b\u3067\u3001\u5229\u7528\u53ef\u80fd\u306a\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u8d85\u3048\u30662\u756a\u76ee\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u306e\u5024\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\uff08marksArray\u306e\u5229\u7528\u53ef\u80fd\u306a\u6700\u5927\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f5\u3067\u3001\u9577\u3055\u306f5\u3067\u3042\u308b\u305f\u3081\uff09\u3001\u305d\u306e\u5024\u306f\u7121\u8996\u3055\u308c\u3001\u5229\u7528\u53ef\u80fd\u306a\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u307e\u3067\u306e\u7d50\u679c\u306e\u307f\u304c\u8fd4\u3055\u308c\u307e\u3059\u3002\u6ce8\u610f\uff1aJava\u3068\u306f\u7570\u306a\u308a\u3001ArrayIndexOutOfBoundsException\u306f\u767a\u751f\u3057\u307e\u305b\u3093\u3002<\/p>\n
\u30b9\u30ab\u30e9\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u306e\u30b9\u30e9\u30a4\u30b9<\/h3>\n
Scala\u306e\u6a19\u6e96API\u3067\u306f\u3001\u307b\u3068\u3093\u3069\u306e\u30af\u30e9\u30b9\u304c\u3053\u306e\u30b9\u30e9\u30a4\u30b9\u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u3066\u304a\u308a\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u30d9\u30fc\u30b9\u306e\u8981\u7d20\u30a2\u30af\u30bb\u30b9\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001List\u30af\u30e9\u30b9\u306f\u6b21\u306e\u3088\u3046\u306b\u3053\u306e\u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
def slice(from: Int, until: Int): List[A]\r\n<\/code><\/pre>\n\u30ea\u30b9\u30c8\u306e\u30b9\u30e9\u30a4\u30b9\u95a2\u6570\u306e\u4f8b\uff1a- \u914d\u5217\u306e\u4f8b\u3068\u540c\u69d8\u306b\u3001\u3069\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3API\u3067\u3082\u540c\u3058\u7d50\u679c\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\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\u3082\u3057\u7a7a\u306e\u30ea\u30b9\u30c8\u3092\u30a2\u30af\u30bb\u30b9\u3059\u308b\u5834\u5408\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5e38\u306b\u7a7a\u306e\u30ea\u30b9\u30c8\u304c\u8fd4\u3055\u308c\u307e\u3059\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\u306eString\u306e\u4e00\u90e8\u3092\u5207\u308a\u53d6\u308b<\/h3>\n
Scala API\u3067\u306f\u3001\u300cStringOps\u300d\u3068\u3044\u3046\u30af\u30e9\u30b9\u304cscala.collection.immutable\u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u793a\u3059\u3088\u3046\u306b\u3001\u305d\u308c\u306f\u30b9\u30e9\u30a4\u30b9\u6a5f\u80fd\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
def slice(from: Int, until: Int): String\r\n<\/code><\/pre>\n\u6ce8\u610f\uff1aScala\u3067\u306f\u3001Java\u306eString\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u3053\u306e\u30af\u30e9\u30b9\u306b\u306fslice\u95a2\u6570\u306f\u3042\u308a\u307e\u305b\u3093\u3002Java\u306eString\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067slice\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001Scala\u306e\u30b3\u30f3\u30d1\u30a4\u30e9\u306f\u5185\u90e8\u3067\u3053\u306eString\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092StringOps\u30af\u30e9\u30b9\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5909\u63db\u3057\u3066\u304b\u3089\u3053\u306eslice\u95a2\u6570\u3092\u4f7f\u7528\u3057\u307e\u3059\uff08slice\u95a2\u6570\u3060\u3051\u3067\u306a\u304f\u3001\u4ed6\u306b\u3082\u591a\u304f\u306e\u6a5f\u80fd\u304c\u3042\u308a\u307e\u3059\u3002\u8a73\u7d30\u306fScala API\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\uff09\u3002\u3064\u307e\u308a\u3001\u300cStringOps\u300d\u306fString\u30af\u30e9\u30b9\u306e\u6697\u9ed9\u306e\u30af\u30e9\u30b9\u3067\u3059\u3002String\u306eslice\u95a2\u6570\u306e\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\u79c1\u305f\u3061\u306f\u77e5\u3063\u3066\u3044\u308b\u901a\u308a\u3001\u6587\u5b57\u5217\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f\u30bc\u30ed\u304b\u3089\u59cb\u307e\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u3001from-index = 6 \u3068\u306f\u3001until-index = 9 \u3092\u610f\u5473\u3057\u307e\u3059\uff08\u3057\u304b\u3057\u3001\u3053\u308c\u306f\u9664\u5916\u3055\u308c\u308b\u305f\u3081\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9 8 \u307e\u3067\u3092\u8003\u616e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff09\u3002\u6587\u5b57\u5217\u306e substring \u95a2\u6570\u306f\u3001\u4ee5\u4e0b\u306b\u793a\u3059\u3088\u3046\u306b slice \u95a2\u6570\u3068\u540c\u69d8\u306b\u6a5f\u80fd\u3057\u307e\u3059\u3002<\/p>\n
scala> str.substring(6,9)\r\nres12: String = I'm\r\n<\/code><\/pre>\n\u3053\u3053\u3067\u306f\u3001str.slice(6,9)\u3068str.substring(6,9)\u306f\u540c\u3058\u5024\u3092\u8fd4\u3057\u3066\u3044\u307e\u3059\u3002String\u30af\u30e9\u30b9\u306eslice\u3068substring\u95a2\u6570\u306e\u9055\u3044<\/p>\n
\n- Functionality wise and syntax wise there is no difference<\/li>\n
- Performance is almost similar and ignorable.<\/li>\n<\/ul>\n
Scala\u3067\u306f\u3001\u4ee5\u4e0b\u306b\u793a\u3059\u3088\u3046\u306b\u3001String\u306e\u6587\u5b57\u306b\u306f\u914d\u5217\u8981\u7d20\u3068\u540c\u3058\u3088\u3046\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u3059\u3002<\/p>\n
scala> str(0)\r\nres0: Char = H\r\n<\/code><\/pre>\nChar\u3092\u8fd4\u3057\u307e\u3059\u304c\u3001String\u3067\u306f\u3042\u308a\u307e\u305b\u3093\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\u6ce8\u610f\uff1a\u6587\u5b57\u5217\u306e\u7bc4\u56f2\u5916\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u3001\u4e0a\u8a18\u306e\u3088\u3046\u306bStringIndexOutOfBoundsException\u304c\u767a\u751f\u3057\u307e\u3059\u3002\u6587\u5b57\u5217\u306e\u6587\u5b57\u3078\u306e\u30a2\u30af\u30bb\u30b9\u306fChar\u3092\u8fd4\u3057\u3001substring\u3084slice\u95a2\u6570\u306fString\u3092\u8fd4\u3059\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\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\u3053\u308c\u304c\u300cScala\u306e\u30b9\u30e9\u30a4\u30b9\u95a2\u6570\u300d\u306e\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u3060\u3063\u305f\u3002\u79c1\u306e\u6b21\u306e\u6295\u7a3f\u3067\u3001\u3082\u3063\u3068Scala\u306e\u6982\u5ff5\u306b\u3064\u3044\u3066\u8b70\u8ad6\u3057\u307e\u3059\u3002\u53c2\u8003\u6587\u732e\uff1aScala API Doc<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4eca\u65e5\u306f\u3001Scala\u306eslice\u95a2\u6570\u306b\u3064\u3044\u3066\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002 \u30b9\u30ab\u30e9\u30b9\u30e9\u30a4\u30b9 \u4ee5\u4e0b\u306eAPI\u30af\u30e9\u30b9\u306b\u306f\u3001Scala\u306e\u30b9\u30e9\u30a4\u30b9\u95a2\u6570\u304c\u5229\u7528\u53ef\u80fd\u3067\u3059\u3002 Scala Array API String API Scala Collec […]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-602","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"\n
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