add set/delete/update functions

[matthiasdiener]

Modeled after the same API in immutables.Map, pyrsistent.Map, and frozendict.

[codecov]

Codecov Report

Merging #271 (ed9759d) into master (bdf02ce) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #271   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            1         1           
  Lines           59        71   +12     
=========================================
+ Hits            59        71   +12     

Flag	Coverage Δ
3.11	100.00% <100.00%> (?)
3.12	?
3.8	100.00% <100.00%> (?)
3.9	?

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
immutabledict/__init__.py	100.00% <100.00%> (ø)

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[corenting]

I see that the upstream PR that needed these changes has been superseded by another one. Is this still needed?

[matthiasdiener]

I see that the upstream PR that needed these changes has been superseded by another one. Is this still needed?

We would like to use these functions elsewhere, so this PR would still be useful to us.

[matthiasdiener]

Due to #263 (I think), there is now an incompatibility with dict. Not sure this was intentional:

$ python
>>> dict(a=1)
{'a': 1}
>>>
>>> from immutabledict import immutabledict
>>> immutabledict(a=1)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: immutabledict.__new__() got an unexpected keyword argument 'a'

Fixed in #273.

[corenting]

Thanks for the PR!