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# example program: constructing recipes out of order
#
# We construct a factorial function with separate base and recursive cases.
# Compare factorial.mu.
#
# This isn't a very tasteful example, just a simple demonstration of
# possibilities.
recipe factorial [
new-default-space
n:number <- next-ingredient
{
+base-case
}
+recursive-case
]
after +base-case [
# if n=0 return 1
zero?:boolean <- equal n:number, 0:literal
break-unless zero?:boolean
reply 1:literal
]
after +recursive-case [
# return n * factorial(n - 1)
x:number <- subtract n:number, 1:literal
subresult:number <- factorial x:number
result:number <- multiply subresult:number, n:number
reply result:number
]
recipe main [
1:number <- factorial 5:literal
$print [result: ], 1:number, [
]
]
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