Stefan, Yes, I often pass even fairly trivial functions like "add" or "+" or whatever the language makes me say, to other functions in various forms of functional programing. My point is that my example may seem trivial and not necessary as an EXAMPLE of the greater point that may be easier to understand than something complex. A sum() is often a generalization of adding two things by allowing a second addition to the sub-sum and so on. But in a straightforward program where I am asking to add exactly two things, few would use sum(a,b) versus just a+b. On the other hand, in agreement with you, if I have two vectors or matrices or some other such data holder and I want to add each position to a corresponding position, then some kind of call to a function where I pass the two objects and the name of a function that adds two things, is a decent way to go. But it need not be a souped-up generalized_sum() function when a simple one will do and be faster when invoked so many times.
And note often what is used is a temporary lambda anonymous function that may look like \(x,y) x+y ... or whatever syntax your language uses. -----Original Message----- From: Python-list <python-list-bounces+avigross=verizon....@python.org> On Behalf Of Stefan Ram Sent: Monday, October 25, 2021 12:57 PM To: python-list@python.org Subject: Re: New assignmens ... "Avi Gross" <avigr...@verizon.net> writes: >Now, yes, nobody needs a function to just add two numbers. If one uses a framework like "functools.reduce", the only way to reduce an iterable to its sum, is to do just that: Write a function to add two numbers. Of course, one can circumvent "functools.reduce" (or use "operator.add"), but in other cases there are frameworks that need to be used and where one sometimes does need to write functions (callbacks) as simple as "lambda: None". -- https://mail.python.org/mailman/listinfo/python-list -- https://mail.python.org/mailman/listinfo/python-list
