Make the successful return value from a match expression be truthy and the failure value false. This avoids an extra method call when checking the result and avoids allocating a new object when a match fails.

#{
	if <- :self trueblock {
		self
	}
	ifnot <- :self falseblock {
		falseblock:
	}
	if:else <- :self trueblock :elseblock {
		elseblock:
	}
	not <- {
		true
	}
	string <- { "false" }
}