integer to string conversion in D

Question

How in D would I cast integer to string? Something like

int i = 15
string message = "Value of 'i' is " ~ toString(i); // cast(string) i - also does not work 

Google brought me the answer on how to do it with tango, but I want the phobos version.

Answer 1

import std.conv;

int i = 15;
string message = "Value of 'i' is " ~ to!string(i);

or format:

import std.string;
string message = format("Value of 'i' is %s.", i);

Answer 2

Use to from std.conv:

int i = 15
string message = "Value of 'i' is " ~ to!string(i);