Proposal for containers: Add 'pop' function to Data.Map

[Tom Ellis]

I really like `extract`!

On Sun, Dec 06, 2020 at 05:29:40PM +0000, Alexey Kuleshevich wrote:
> `extract` is the name that I would suggest. I also agree with David
> that `pop` is a bit too confusing in a non-stack/queue data
> structure. If all languages named it pop, then it would be good
> argument for the name, but we don't need to copy python. The only
> thing that pyhon has that I wish we had in Haskell is the popularity
> ;)
> 
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> On Sunday, December 6, 2020 8:16 PM, Carter Schonwald <carter.schonwald at gmail.com> wrote:
> 
> > LookupThenRemove seems like a more descriptive name. Though I guess I can see why pop has appeal.
> >
> > On Sun, Dec 6, 2020 at 11:44 AM David Feuer <david.feuer at gmail.com> wrote:
> >
> >> I suggest you add a version for Data.Sequence combining lookup with deleteAt. I wanted that for something fairly recently.
> >>
> >> On Sun, Dec 6, 2020, 11:41 AM Martijn Bastiaan via Libraries <libraries at haskell.org> wrote:
> >>
> >>> Yeah, Python's `pop` made me call it `pop`. I had hoped to find other
> >>> examples, but Java, Rust, and Ruby don't seem to offer `pop`-like
> >>> functions for their (hash)maps.
> >>>
> >>> On 12/6/20 5:29 PM, Tom Ellis wrote:
> >>>> On Sun, Dec 06, 2020 at 11:25:33AM -0500, David Feuer wrote:
> >>>>> The name pop makes me think of a stack. Is this use of the word common?
> >>>> Python uses that name, which is why I'm familiar with it:
> >>>>
> >>>>>>> d = {'a': 1, 'b': 2}
> >>>>>>> d.pop('b')
> >>>> 2
> >>>>>>> d
> >>>> {'a': 1}
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