import std.stdio;

​

static void log(bool newline = true)(string text)

{

    static if (newline) {

        alias print = writeln;

    } else {

        alias print = write;

    }

​

    print(text);

}

​

void main()

{

    log!false("Without newline");

    log!true("With newline");

    writeln("This is on a separate line");

}