On Fri, Oct 5, 2012 at 3:31 PM, Ian Kelly <ian.g.ke...@gmail.com> wrote:
> On Fri, Oct 5, 2012 at 2:19 PM, vasudevram <vasudev...@gmail.com> wrote:
>>
>> http://jugad2.blogspot.in/2012/10/fmap-inverse-of-python-map-function.html
>
> Your fmap is a special case of reduce.
>
> def fmap(functions, argument):
> return reduce(lambda result, func: func(result), functions, argument)
In a more functional style, you could also use reduce to compose the
functions before applying them:
def compose(f, g):
return lambda x: f(g(x))
def fmap(functions):
return reduce(compose, reversed(functions))
# Allowing you to then do:
result = fmap(functions)(argument)
Cheers,
Ian
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