regex.d

import std.algorithm, std.file, std.regex;


import std.string;
import std.stdio;
import std.container.dlist;
import std.range;
void main()
{

string ua = "Mozilla/5.0 (iPhone CPU iPhone OS 5_1_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9B206 Safari/7534.48.3";
//string ua = "Mozilla/5.0 (iPhone; CPU iPhone OS 6_1_3 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10B329 Safari/8536.25";
auto cantChangeThat = r"(iPhone)(?:;| Simulator;)?".regex();

auto fmt = "mystring: $1";
auto m2 = ua.matchAll(cantChangeThat); 

auto res = ua.replaceAll(cantChangeThat, fmt);

assert("mystring: iPhone" == res);


}