大约有 43,900 项符合查询结果（耗时：0.0305秒） [XML]
Finding local maxima/minima with Numpy in a 1D numpy array
... a module function from numpy/scipy that can find local maxima/minima in a 1D numpy array? Obviously the simplest approach ever is to have a look at the nearest neighbours, but I would like to have an accepted solution that is part of the numpy distro.
...
How to create a colored 1x1 UIImage on the iPhone dynamically?
I would like to create a 1x1 UIImage dynamically based on a UIColor.
6 Answers
6
...
Why is the order in dictionaries and sets arbitrary?
...and lets assume the table size is 8 slots. In Python 2.7, hash('foo') is -4177197833195190597, hash('bar') is 327024216814240868. Modulo 8, that means these two keys are slotted in slots 3 and 4 then:
>>> hash('foo')
-4177197833195190597
>>> hash('foo') % 8
3
>>> hash('ba...
How do you set, clear, and toggle a single bit?
...
Setting a bit
Use the bitwise OR operator (|) to set a bit.
number |= 1UL << n;
That will set the nth bit of number. n should be zero, if you want to set the 1st bit and so on upto n-1, if you want to set the nth bit.
Use 1ULL if number is wider than unsigned long; promotion of 1UL <&...
How to concatenate twice with the C preprocessor and expand a macro as in “arg ## _ ## MACRO”?
...EVALUATOR(fun, VARIABLE)
extern void NAME(mine)(char *x);
$ gcc -E xx.c
# 1 "xx.c"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "xx.c"
extern void mine_3(char *x);
$
Two levels of indirection
In a comment to another answer, Cade Roux asked why this needs two levels of indirection. ...
Transpose/Unzip Function (inverse of zip)?
...
12 Answers
12
Active
...
MySQL ON vs USING?
...
415
It is mostly syntactic sugar, but a couple differences are noteworthy:
ON is the more general ...
How can I get the current network interface throughput statistics on Linux/UNIX? [closed]
...
15 Answers
15
Active
...
Select values from XML field in SQL Server 2008
...
159
Given that the XML field is named 'xmlField'...
SELECT
[xmlField].value('(/person//firstName...