... functions as nouns... On Wed, Aug 22, 2018, 1:44 PM David Mertz <me...@gnosis.cx> wrote:
> This isn't trying to snipe. I have written the exact same unnecessary > circumlocution in my own code hundreds of times. Hopefully most of them > simplified before release, but I'm sure not all. And I "wrote the book", as > one says, _Functional Programming in Python_. > > Functions as sounds is a powerful but counterintuitive concept. > > On Wed, Aug 22, 2018, 1:38 PM David Mertz <me...@gnosis.cx> wrote: > >> On Wed, Aug 22, 2018, 12:40 PM Steven D'Aprano <st...@pearwood.info> >> wrote: >> >>> I believe that many people have a lot of trouble grasping the concept of >>> functions as first-class values capable of being passed to other functions >>> as data... It took me a long time to stop writing code like this: >>> >>> map(lambda x: len(x), sequence) >>> >>> instead of simply map(len, sequence). >>> >> >> That long time is ongoing :-) >> >> You recently wrote in another thread: >> >> widget.register(callback=lambda: spam.eggs()) >> >> Instead of the slightly faster and definitely more direct: >> >> widget.register(callback=spam.eggs()) >> >>>
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