swift format string

//: Playground - noun: a place where people can play

importUIKit

funcformatString1(format:String,_args:CVarArgType...) {

formatString1_inner(format,getVaList(args))

}

// NSString format

funcformatString1_inner(format:String,_args:CVaListPointer) {

letstring =NSString(format: format, arguments: args)

print(string)

}

funcformatString2(format:String,_args:CVarArgType...) {

formatString2_inner(format, args);

}

// String format

funcformatString2_inner(format:String,_args:[CVarArgType]) {

letstring =String(format: format, arguments: args)

print(string)

}

formatString1("formatString1%d",1)

formatString2("formatString2%d",2)