[Swift]类型 « 爱好玩

swift支持类型推导,一般用var不需要指定类型

var str = "This is a string"

1	var str = "This is a string"

需要指定类型时,可以这样

var str:String = "This is a string"
var i:Int = 100

1 2	var str:String = "This is a string" var i:Int = 100

爱好玩