On 2013-08-28 05:52, AdamKal wrote:
> From time to time I have to apply a series of functions to a value
> in such a way:
>
> func4(func3(func2(func1(myval))))
>
> I was wondering if there is a function in standard library that
> would take a list of functions and a initial value and do the above
> like this:
>
> func_im_looking_for([func1, func2, func3, func4], myval)
At least in Py2.x you can use reduce:
reduce(lambda value, fn: fn(value), [list_of_functions], myval)
I believe it was moved into functools.reduce() in Py3.x meaning you
might want to do something like
try:
reduce # see if it's already in __builtins__
except NameError: # running Py3...
from functools import reduce
or
try:
from functools import reduce
except ImportError:
pass # it should already be in __builtins__ for pre-2.6
at the top to make sure it's in your global namespace.
-tkc
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