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4 questions
2
votes
1
answer
493
views
Eager map in Python
In Python the map function is lazy, but most often I need an eager map.
For example, trying to slice a map object results in an error:
>>>> map(abs, [3, -1, -4, 1])[1:]
Traceback (most ...
- 363
1
vote
1
answer
332
views
Lazy evaluation of numpy.max
Suppose I have a 1D numpy array x with shape (n,) consisting mostly of zeros, and a 2D array Y with shape (m,n). I want to compute
np.sum(x * np.max(Y,axis=0))
i.e. the dot product of x with the ...
- 1,974
1
vote
1
answer
239
views
Is there any way to lazy evaluate function.func_name?
This question is not about my code
I just want to claim the reason why I need lazy evalution on function.func_name
I'm using a curry decorator in my code
I made it to show curried arguments by ...
- 1,627
11
votes
5
answers
3k
views
Lazy transform in C++
I have the following Python snippet that I would like to reproduce using C++:
from itertools import count, imap
source = count(1)
pipe1 = imap(lambda x: 2 * x, source)
pipe2 = imap(lambda x: x + 1, ...
- 2,052