String To Enum

StrToEnum.hpp

#include <iostream>
#include <map>
#include <string>

using std::string;


namespace {
enum class SomeThing {
	BLUE,
	GREEN,
	RED,
	BLACK_HOLE_OF_COLOR,
};

SomeThing
giveMe(string something)
{
	static const std::map<string, SomeThing> things = {
		{
			"blue",
			SomeThing::BLUE,
		},
		{
			"green",
			SomeThing::GREEN,
		},
		{
			"red",
			SomeThing::RED,
		},
	};

	auto elem = things.find(something);
	if (elem == things.end()) {
		return SomeThing::BLACK_HOLE_OF_COLOR;
	} else {
		return elem->second;
	}
}


void
doIt(string thing)
{
	using std::cerr;
	using std::endl;
	switch (giveMe(thing)) {
		case SomeThing::RED:
			cerr << "Something red\n";
			break;

		case SomeThing::GREEN:
			cerr << "Something green\n";
			break;

		case SomeThing::BLUE:
			cerr << "Something blue\n";
			break;

		default:
			cerr << "DANGER DANGER\n";
			break;
	}
}
} // ns


int
main()
{
	doIt("red");
	doIt("green");
	doIt("blue");
	doIt("anything else");
	doIt("RED"); // capitilization matters

	return 0;
}