Equality and ordering

gistfile1.d

import std.algorithm, std.container, std.uni;

struct S
{
	string str;

	int opCmp(const S other) const
	{
		return icmp(str, other.str);
	}
}

void main()
{
	auto data = [S("c"), S("B"), S("a")];
	auto sorted = sort(data);
	assert(sorted.equal([S("a"), S("B"), S("c")])); // Cool, this is what I wanted!

	// Meanwhile, somewhere else...
	auto rbt = redBlackTree(data);
	assert(S("C") in rbt); // Wait what, I never asked for this!
}