How to append a NSMutableString with a NSMutableString?

Question

NSMutableString *str, *str1;

//allocation here

i am using [str appendString:str1] is not working. [str appendFormat:str

Answer 1

Swift version

Although in Swift it is not the general practice to use NSMutableString, it may at times be necessary. This is how you would do it:

var str: NSMutableString = NSMutableString()
var str1: NSMutableString = "some value"
str.appendString(str1 as String) // str = "some value"

Note that the usual way to append a string in Swift is like this:

var str = ""
let str1 = "some value"
str += str1

where str and str1 are inferred to be of type String.