Is there a function that applies list of functions to a value?

[AdamKal]

Thanks! 

I guess this is as simple as it gets then. I was just looking for the "one obvious way to do it".

W dniu środa, 28 sierpnia 2013 15:11:34 UTC+2 użytkownik Tim Chase napisał:
> 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