3 ms·
x = lambda y: <code goes here> def x(y): <code goes here> What's so heavyweight? A new line and a tab?
by dontreact 8y ago
x = lambda y: <code goes here>
def x(y):
<code goes here>
What's so heavyweight? A new line and a tab?
- lou1306 8y agoIMO lambdas are useful because they reduce mental overhead by allowing the developer not to give names to trivial functions [1]. Compare these two equivalent pieces of code: youngest_person = min(people, key=lambda x: x.age) def get_age(x): return x.age youngest_person = min(people, key=get_age) This may not seem like a huge difference, but using lambdas scales better. [1] Incidentally, this is the same reason why I don't miss multi-line lambdas (in Python): multi-line functions are seldom trivial.
- dontreact 8y agoYeah in the context of multi line functions the overhead is A new line A tab A return This does not sound heavyweight to me (in that context). In the context of a single line function I see the utility of lambdas.