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halftrue/StringLengthSwift.swift

Created April 28, 2016 14:09
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StringLengthSwift.swift
// approach one
extension String {
var length: Int {
return characters.count
}
}
// approach two
extension String {
var length: Int {
return (self as NSString).length
}
}
// direct use
let str: String = "Hello, World"
print(str.characters.count) // 12
let str1: String = "Hello, World"
print(str1.endIndex) // 12
let str2 = "Hello, World"
NSString(string: str2).length
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