# If gen is a generator that applies to typed parameters,
# functionize{gen} is equivalent to gen but works through a function call
# So multiple calls to functionize{gen} on the same types share code
# instead of inlining and duplicating it.

fn asfunc{gen, ...type}(a:type) = gen{...a}
def functionize{gen}{...args} = asfunc{gen, ...each{type, args}}(args)