On 01/-10/-28163 02:59 PM, Ajit Deshpande wrote:
I am trying to figure out where lambda functions can be useful. Has anyone
used them in real world?
From my reading so far, I hear people claim that lambda can be a useful
replacement for small functions. Most examples didn't make much sense to
me. Why would anyone use a one liner anonymous function, if you never plan
to use it elsewhere? You would then be implementing the logic directly in
the line, isn't it?. Functions are useful if they plan to get called
multiple times within your code.
For example:
add_one = lambda x: x + 1
In real world, why would I use a lambda for this. I would simply do:
add_one = x + 1
Can you provide some useful use cases for lambda functions?
~ Ajit Deshpande
The other comments are useful. Lambdas are usually used for callback
functions. But I wanted to point out that your two add_one objects are
not at all equivalent. The first one is a function, which can be called
at a later time. The second one is probably an integer, depending of
course on the type of x.
To get the equivalent of the lambda function above, you'd use
def add_one(x):
return x+1
DaveA
_______________________________________________
Tutor maillist - Tutor@python.org
To unsubscribe or change subscription options:
http://mail.python.org/mailman/listinfo/tutor
