splitterASCII

import std.algorithm.comparison : equal;
import std.algorithm.comparison : among;
import nxt.array_help : s;

assert(``.splitterASCII!(_ => _ == ' ')
		 .empty);

assert(` `.splitterASCII!(_ => _ == ' ')
		  .empty);

assert(`   `.splitterASCII!(_ => _ == ' ')
			.empty);

assert(` - `.splitterASCII!(_ => _ == ' ')
			.equal([`-`].s[]));

assert(`a`.splitterASCII!(_ => _ == ' ')
		  .equal([`a`].s[]));

assert(` a `.splitterASCII!(_ => _ == ' ')
			.equal([`a`].s[]));

assert(` a b `.splitterASCII!(_ => _ == ' ')
			  .equal([`a`, `b`].s[]));

assert(` a_b `.splitterASCII!(_ => _ == ' ')
			  .equal([`a_b`].s[]));

assert(` - aa   bb--c-_d--_e`.splitterASCII!(_ => _.among!(' ', '-', '_') != 0)
							 .equal([`aa`, `bb`, `c`, `d`, `e`].s[]));

import nxt.dip_traits : hasPreviewDIP1000;
version (none) // TODO: enable
static if (hasPreviewDIP1000) {
	// See_Also: https://forum.dlang.org/post/pzddsrwhfvcopfaamvak@forum.dlang.org
	static assert(!__traits(compiles, {
		char[] f() {
			char[2] x;
			return x[].splitterASCII!(_ => _ == ' ').front;
		}
	}
					));
}