C# の || と |

gistfile1.cs

static void Main(string[] args) {

	if (expr1() || expr2())
		Console.WriteLine("|| - short circuit");

	if (expr1() | expr2())
		Console.WriteLine("| - both evaluated");

	Console.ReadKey();
}

private static bool expr1() {
	Console.WriteLine("expr1: true");
	return true;
}

private static bool expr2() {
	Console.WriteLine("expr2: true");
	return true;
}

//出力:
//expr1: true
//|| - short circuit
//expr1: true
//expr2: true
//| - both evaluated