3 ms·
You can do it in Python as you have, but it becomes second nature with Haskell (I can't speak to Elm directly). You might not even realize you're doing it. Add
by orblivion 9y ago
You can do it in Python as you have, but it becomes second nature with Haskell (I can't speak to Elm directly). You might not even realize you're doing it.
Add 5 to each num in a list (using a pretend function called `add` in both languages to be fair):
map(functools.partial(add, 5), nums)
map (add 5) nums
Add 5 to each in a list of list of numbers:
map(functools.partial(map, functools.partial(add, 5)), nums)
map (map (add 5)) nums
- winstonewert 9y agoI suppose it would make more sense to write these as lambdas in a c style syntax nums.map(|sublist| sublist.map(|num| add(num, 5)) Maybe I haven't done enough functional programming yet, but I still like the explicitness of the C-style over the functional style.
- kasbah 9y agoSorry, but there is nothing more explicit about using lambdas as you have done, it's simply redundant (notice the repetition of sublist and num arguments).