無意味にマクロで。 macro_rules! fib { ( $n:expr ) => {{ let (mut x, mut y) = (1, 0); for _ in 0..$n { let tmp = box x; x += y; y = *tmp; } y }}; } fn main() { println!("{}", fib!(10)); } ( ՞ਊ ՞) :~/dev $ rustc --version # ちと古い rustc 1.…

import std.stdio : writeln; import std.conv : to; class Fib(T) if (__traits(isIntegral, T)) { T opIndex(T n) const pure nothrow @trusted @nogc in { assert(n > 0); } body { T y; { T x = 1; foreach (_; 0..n) (((x = n = x) += y) ? y : y) = n;…

ちょっと興味がでたのでやってみる. 前準備. $ sudo apt-get apt-file $ apt-file update $ apt-file search XInput.h libxi-dev: /usr/include/X11/extensions/XInput.h $ apt-file search Xrandr.h ... libxrandr-dev: /usr/include/X11/extensions/Xrandr…