bsideup/GroovyPatternMatchingB.groovy Secret

## GroovyPatternMatchingB.groovy
def fact(num) {
   return match(num) {
      when String then fact(num.toInteger())
      when(0 | 1) then 1
      when 2 then 2
      orElse it * fact(it - 1)
   }
}

assert fact("5") == 120
	def fact(num) {
	return match(num) {
	when String then fact(num.toInteger())
	when(0 \| 1) then 1
	when 2 then 2
	orElse it * fact(it - 1)
	}
	}

	assert fact("5") == 120