Determines whether a computer is big-endian or little-endian.

endian.d

import std.stdio;

auto isLittleEndian() {
	int i = 0x11223344;
	byte* b = cast(byte*)&i;
	return b[0] == 0x44;
}

void main() {
	if (isLittleEndian()) writeln("little endian");
	else writeln("big endian");
}