learnxinyminutes-docs/d.html.markdown

language	filename	contributors	lang
d	learnd.d	Nick Papanastasiou www.nickpapanastasiou.github.io	en

If you're like me and spend way to much time on the internet, odds are you've heard about D. The D programming language is a modern, general-purpose, multi-paradigm language with fantastic support for OOP, functional programming, metaprogramming, and easy concurrency and parallelism, and runs the gamut from low-level features such as memory management, inline assembly, and pointer arithmetic, to high-level constructs such as higher-order functions and generic structures and functions via templates, all with a pleasant syntax, and blazing fast performance!

D is actively developed by Walter Bright and Andrei Alexandrescu, two super smart, really cool dudes. With all that out of the way, let's look at some examples!

'''d // You know what's coming... import std.stdio;

// args is optional void main(string[] args) { writeln("Hello, World!"); }

// Conditionals and loops work as expected. import std.stdio;

void main() { for(int i = 0; i < 5; i++) { writeln(i); }

auto n = 1; // use auto for type inferred variables

while(n < 10_000) {
    n += n;
}

do {
    n -= (n / 2);
} while(n > 0);

// For and while are nice, but in D-land we prefer foreach
foreach(i; 1..int.max) { // The .. creates a continuous range 
    if(n % 2 == 0)
        writeln(i);
}

foreach_reverse(i; short.max) {
    if(n % 2 == 1)
        writeln(i);
    else
        writeln("No!");
}

}

'''