目录

for-in

for-in循环遍历项目集合,例如数字范围,数组中的项目或字符串中的字符 -

语法 (Syntax)

Swift 4编程语言中for-in循环的语法是 -

for index in var {
   statement(s)
}
For-In循环

Example

var someInts:[Int] = [10, 20, 30]
for index in someInts {
   print( "Value of index is \(index)")
}

执行上述代码时,会产生以下结果 -

Value of index is 10
Value of index is 20
Value of index is 30
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