Swift 取子字符串

发布时间：2020-12-14 07:05:06 所属栏目：百科来源：网络整理

导读：let str = "0123456 ?? 画画 …… ％ ……" let s1 = (str as NSString ). substringFromIndex ( 3 ) print (s1) let index = str. startIndex . advancedBy ( 2 ) debugPrint (index. dynamicType ) let s2 = str. substringFromIndex (index) print (s2) l

let str = "0123456??画画……％……"

let s1 = (str as NSString).substringFromIndex(3)

print(s1)

let index = str.startIndex.advancedBy(2)

debugPrint(index.dynamicType)

let s2 = str.substringFromIndex(index)

print(s2)

let tart = str.startIndex

let end = str.endIndex.advancedBy(-1)

let s3 = str.substringWithRange(tart..<end)

print(s3)

（编辑：李大同）

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