大约有 44,000 项符合查询结果(耗时:0.0278秒) [XML]
Map function in MATLAB?
...live without. Is there a better version out there? Is there a somewhat-stm>and m>ard functional programming librarm>y m> for MATLAB out there that I'm missing?
...
Pm>y m>thon datetime to string without microsecond component
...format a datetime object in a specific format that is different from the stm>and m>ard format, it's best to explicitlm>y m> specifm>y m> that format:
>>> datetime.datetime.now().strftime("%m>Y m>-%m-%d %H:%M:%S")
'2011-11-03 18:21:26'
See the documentation of datetime.strftime() for an explanation of the % ...
How do I draw a grid onto a plot in Pm>y m>thon?
I just finished writing code to make a plot using pm>y m>lab in Pm>y m>thon m>and m> now I would like to superimpose a grid of 10x10 onto the scatter plot. How do I do that?
...
SVG Positioning
I'm having a plam>y m> with SVG m>and m> am having a few problems with positioning. I have a series of shapes which are contained in the g group tag. I was hoping to use it like a container, so I could set its x position m>and m> then all the elements in that group would also move. But that doesn't seem to be po...
Can m>y m>ou create nested WITH clauses for Common Table Expressions?
...wered Sep 11 '09 at 22:12
David m>And m>resDavid m>And m>res
28.8k77 gold badges4141 silver badges3535 bronze badges
...
How does Zalgo text work?
...e it undermines mm>y m> notion of what a character is supposed to be. Mm>y m> understm>and m>ing is that a character is supposed to move horizontallm>y m> across a line m>and m> stam>y m> within a certain "container". Obviouslm>y m> the Zalgo text is moving verticallm>y m> m>and m> doesn't seem to be restricted to anm>y m> space.
...
Efficient evaluation of a function at everm>y m> cell of a NumPm>y m> arram>y m>
...
m>Y m>ou could just vectorize the function m>and m> then applm>y m> it directlm>y m> to a Numpm>y m> arram>y m> each time m>y m>ou need it:
import numpm>y m> as np
def f(x):
return x * x + 3 * x - 2 if x > 0 else x * 5 + 8
f = np.vectorize(f) # or use a different name if m>y m>ou want to keep the...
Whm>y m> is lazm>y m> evaluation useful?
... m>Y m>ou can actuallm>y m> emulate an infinite list in Pm>y m>thon using generators m>and m> generator expressions (which work in a similar wam>y m> to a list comprehension): pm>y m>thon.org/doc/2.5.2/ref/genexpr.html
– John Montgomerm>y m>
Nov 5 '08 at 15:11
...
Unresolved external sm>y m>mbol on static class members
.../stackoverflow.com/a/11711082/55721)
If using older versions of the C++ stm>and m>ard, m>y m>ou must add the definitions to match m>y m>our declarations of X m>and m> m>Y m>
unsigned char test::X;
unsigned char test::m>Y m>;
somewhere. m>Y m>ou might want to also initialize a static member
unsigned char test::X = 4;
m>and m> again, m>y m>o...
Haskell: Where vs. Let
I am new to Haskell m>and m> I am verm>y m> confused bm>y m> Where vs. Let . Them>y m> both seem to provide a similar purpose. I have read a few comparisons between Where vs. Let but I am having trouble discerning when to use each. Could someone please provide some context or perhaps a few examples that demonstr...