String length in Swift 1.2 and Swift 2.0
string, swift
Solution
You can use extension for it like:
extension String {
var length: Int { return count(self) } // Swift 1.2
}
and you can use it:
if mystr.length >= 3 {
}
Or you can directly count this way:
if count(mystr) >= 3{
}
And this is also working for me :
if count(mystr.utf16) >= 3 {
}
For Swift 2.0:
extension String {
var length: Int {
return characters.count
}
}
let str = "Hello, World"
str.length //12
Another extension:
extension String {
var length: Int {
return (self as NSString).length
}
}
let str = "Hello, World"
str.length //12
If you want 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 //12
Problem
In the previous version of Swift, I had the following code. ``` func myfunc(mystr: String) { if mystr.utf16Count >= 3 { ``` With the latest release of Swift 1.2, I now get the following error. ``` 'utf16Count' is unavailable: Take the count of a UTF-16 view instead, i.e. count(str.utf16) ``` So I change my code as follows: ``` func myfunc(mystr: String) { if count(mystr.utf16) >= 3 { ``` But that doesn't work. I now get the following error message instead. ``` '(String.UTF16View) -> _' is not identical to 'Int16' ``` What is the correct way to get the length of a string with Swift 1.2?