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# example program: constructing functions 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 basic demonstration of
# possibilities.
def factorial n:num -> result:num [
local-scope
load-inputs
<factorial-cases>
]
after <factorial-cases> [
# if n=0 return 1
return-unless n, 1
]
after <factorial-cases> [
# return n * factorial(n - 1)
{
break-unless n
x:num <- subtract n, 1
subresult:num <- factorial x
result <- multiply subresult, n
return result
}
]
def main [
1:num <- factorial 5
# trailing space in next line is to help with syntax highlighting
$print [result: ], 1:num, [
]
]
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