なんかふと思い立ってD言語のlambdaっていうかfunctionで遊んでみた

hw_func.d

import std.stdio,
       std.array,
       std.algorithm;
void main(){
  ((()=>"H")()~(()=>"e")() ~(()=>"l")()~(()=>"l")()~(()=>"o")()~(()=>" ")()~(()=>"w")()~(()=>"o")()~(()=>"r")()~(()=>"l")()~(()=>"d")()).writeln;
  ([()=>"H", ()=>"e", ()=>"l", ()=>"l", ()=>"o", ()=>" ", ()=>"w", ()=>"o", ()=>"r", ()=>"l", ()=>"d"].map!(x => x())).join.writeln;
}