大约有 48,000 项符合查询结果（耗时：0.0813秒） [XML]
Using numpy to build an array of all combinations of two arrays
...implementation:
@pv's solution
In [113]:
%timeit cartesian(([1, 2, 3], [4, 5], [6, 7]))
10000 loops, best of 3: 135 µs per loop
In [114]:
cartesian(([1, 2, 3], [4, 5], [6, 7]))
Out[114]:
array([[1, 4, 6],
[1, 4, 7],
[1, 5, 6],
[1, 5, 7],
[2, 4, 6],
[2, 4, 7],...
What's the (hidden) cost of Scala's lazy val?
... |
edited Feb 20 '14 at 20:33
vergenzt
7,38333 gold badges2424 silver badges4141 bronze badges
an...
How can I profile Python code line-by-line?
...s intended for. From the link:
File: pystone.py
Function: Proc2 at line 149
Total time: 0.606656 s
Line # Hits Time Per Hit % Time Line Contents
==============================================================
149 @profile
150 ...
how does multiplication differ for NumPy Matrix vs Array classes?
...
answered Oct 8 '10 at 16:49
Joe KingtonJoe Kington
223k5858 gold badges528528 silver badges435435 bronze badges
...
How to extract text from a string using sed?
...
tripleeetripleee
124k1818 gold badges183183 silver badges240240 bronze badges
...
CSS triangle custom border color
...|
edited Jun 26 '16 at 17:43
answered Feb 26 '12 at 5:20
Sc...
Index all *except* one item in python
... 3rd element:
a = range(10)[::-1] # [9, 8, 7, 6, 5, 4, 3, 2, 1, 0]
b = [x for i,x in enumerate(a) if i!=3] # [9, 8, 7, 5, 4, 3, 2, 1, 0]
This is very general, and can be used with all iterables, including numpy arrays. If you replace [] with (), b will be an iterator inst...
How can I plot with 2 different y-axes?
...ach set of points has its own (different) y-axis (i.e., in positions 2 and 4 on the figure) but the points appear superimposed on the same figure.
...
How to check if all elements of a list matches a condition?
...
414
The best answer here is to use all(), which is the builtin for this situation. We combine this...
what does -webkit-transform: translate3d(0,0,0); exactly do? Apply to body?
...
Yotam OmerYotam Omer
14.1k1111 gold badges5454 silver badges6161 bronze badges
...