大约有 40,000 项符合查询结果（耗时：0.0504秒） [XML]
Why does GCC generate 15-20% faster code if I optimize for size instead of speed?
...
By default compilers optimize for "average" processor. Since different processors favor different instruction sequences, compiler optimizations enabled by -O2 might benefit average processor, but decrease performance on your particular ...
Explanation of [].slice.call in javascript?
... converting a DOM NodeList into a regular array, but I must admit, I don't completely understand how it works:
8 Answers
...
How to fix 'sudo: no tty present and no askpass program specified' error?
I am trying to compile some sources using a makefile. In the makefile there is a bunch of commands that need to be ran as sudo .
...
how does multiplication differ for NumPy Matrix vs Array classes?
The numpy docs recommend using array instead of matrix for working with matrices. However, unlike octave (which I was using till recently), * doesn't perform matrix multiplication, you need to use the function matrixmultipy(). I feel this makes the code very unreadable.
...
nginx showing blank PHP pages
...is on the server. Eg. PATH_TRANSLATED for test.com/index.php might be /var/www/index.php
– Constant Meiring
Jun 10 '15 at 8:30
|
show 5 more...
Managing relationships in Laravel, adhering to the repository pattern
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
Grabbing the href attribute of an A element
...very easy and fast using SimpleXML
$a = new SimpleXMLElement('<a href="www.something.com">Click here</a>');
echo $a['href']; // will echo www.something.com
Its working for me
share
|
...
Relative URLs in WordPress
...ive paths so that I can deploy to dev.mysite.com -> qa.mysite.com -> www.mysite.com or even www.anothersite.com with no issues. It's unfortunate that WP wasn't designed with that in mind. Since setting WP_CONTENT_URL doesn't seem to be intended to (even though it allows) setting relative url...
how to detect search engine bots with php?
...e $_SERVER['HTTP_USER_AGENT'] for some of the strings listed here:
http://www.useragentstring.com/pages/useragentstring.php
Or more specifically for crawlers:
http://www.useragentstring.com/pages/useragentstring.php?typ=Crawler
If you want to -say- log the number of visits of most common search ...
Use cases for the 'setdefault' dict method
... for setting defaults while or after filling the dict.
Probably the most common use case: Grouping items (in unsorted data, else use itertools.groupby)
# really verbose
new = {}
for (key, value) in data:
if key in new:
new[key].append( value )
else:
new[key] = [value]
# ...