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+--- Thread: Lambda Functions (/thread-191.html)
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RE: Lambda Functions - snippsat - Sep-29-2016
(Sep-29-2016, 06:11 PM)j.crater Wrote: Removing lambdas is also something they could do, but it really didn't come across my mind :DGuido van Rossum creator of Python wanted a alternative to lambda,
but there was a lot of arguments against it.
This is his (final) decision on that matter Let's just *keep* lambda
RE: Lambda Functions - Larz60+ - Sep-29-2016
Hello,
Here's a place where I really like lambda.
when setting a command that requires attributes, for example a tab on a notebook in tkinter
The normal 'command' doesn't allow for attributes to be passed (at least I don't believe it does).
lambda to the rescue - Here's an example
nb.add('cal', label='Find Calls', underline=0,
createcmd=lambda w=w, name='cal': self.FindCall(nb, name))Larz60+
RE: Lambda Functions - metulburr - Sep-29-2016
Quote:for example a tab on a notebook in tkintertkinter seems to be the only place i have ever used lambdas.
RE: Lambda Functions - nilamo - Sep-29-2016
GUIs, in general, probably use them more than anything else, if for no other reason than you need simple event handlers for almost everything.
RE: Lambda Functions - snippsat - Sep-29-2016
To think of something that i use lambda quite often in sorting comes to mind.
There is an alternative itemgetter,but then have to import it.
>>> lst = [('Tom', 'C', 10), ('Kent', 'A', 12), ('Jenny', 'B', 15)]
>>> sorted(lst, key=lambda tup: tup[1])
[('Kent', 'A', 12), ('Jenny', 'B', 15), ('Tom', 'C', 10)]
RE: Lambda Functions - ATXpython - Sep-29-2016
Thanks for all the great responses - very helpful.
It seems like there are a handful of places where a lambda could be useful, I just havent run into them with my programs yet.
As a few of you have mentioned, I think I might just ignore that language feature for the time being and revist if necessary.
RE: Lambda Functions - Larz60+ - Sep-30-2016
Hello,
Just one more comment, you are wise to let it go for now,
but when you want something interesting to read up on:
https://dzone.com/articles/lambda-basics-the-mouse-vs-the-python
and there are many more
Sooner or later, you're going to need it. That's when I learned how to use it
(as with most things).
Larz60+
[url=https://dzone.com/articles/lambda-basics-the-mouse-vs-the-python][/url]