Hi all,
I've been working in q and k, which is where this idea comes from.
My idea is to make lists and dicts callable, with __call__ =
__getitem__.
So that:
[3,4,5](1) gives 4
{'a':1, 'b': 2}('b') gives 2
Arguably a list is a function which maps from range(len(list)) to the
list entries, and a dictionary is a function that maps from keys to
values.
This would mean that functions designed to take functions, can be
repurposed to take data, for example:
map(lst, idxs) instead of (lst[i] for i in idxs) or map(lambda x:
lst[x], idxs)
map(dct, lst) instead of (dct[l] for l in lst)
sorted(range(len(lst)), key=lst) to calculate the equivalent of
np.argsort
max(range(len(lst)), key=lst) to calculate the equivalent of np.argmax
I couldn't find this being discussed before. Does anyone like it? There
is room for confusion as it would mean that e.g. filter([1,2], [0,1])
would give [0,1] whilst [1] might be expected.
Best,
George Harding
p.s. Thank you to everyone for their work on such a wonderful language.
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