大约有 40,000 项符合查询结果（耗时：0.0853秒） [XML]
Understanding repr( ) function in Python
...gt;>> x
'foo'
So the name x is attached to 'foo' string. When you call for example repr(x) the interpreter puts 'foo' instead of x and then calls repr('foo').
>>> repr(x)
"'foo'"
>>> x.__repr__()
"'foo'"
repr actually calls a magic method __repr__ of x, which gives the s...
How can I create a unique constraint on my column (SQL Server 2008 R2)?
...lready have. It doesn't need to be entered into the expression dialogue at all.
share
|
improve this answer
|
follow
|
...
How can I remove a commit on GitHub? [duplicate]
I "accidentally" pushed a commit to GitHub.
21 Answers
21
...
How to deny access to a file in .htaccess
...nes from the parent).
So you can have:
<Files "log.txt">
Order Allow,Deny
Deny from all
</Files>
For Apache 2.4+, you'd use:
<Files "log.txt">
Require all denied
</Files>
In an htaccess file in your inscription directory. Or you can use mod_rewrite to sort of...
Single huge .css file vs. multiple smaller specific .css files? [closed]
... to deliver a single, minimised CSS file for the site (which will be far smaller and faster than a normal single CSS source file), while maintaining the nicest development environment, with everything neatly split into components.
Sass and LESS have the added advantage of variables, nesting and oth...
What is the difference between String.Empty and “” (empty string)?
...ich makes string.Empty more efficient.
In version 2.0 and later of .NET, all occurrences of "" refer to the same string literal, which means "" is equivalent to .Empty, but still not as fast as .Length == 0.
.Length == 0 is the fastest option, but .Empty makes for slightly cleaner code.
See the ...
What is the Python equivalent of Matlab's tic and toc functions?
...e stuff
Sometimes I find this technique more convenient than timeit - it all depends on what you want to measure.
share
|
improve this answer
|
follow
|
...
What is the difference between display: inline and display: inline-block?
...v get a whole width line (force a line break) but respect width/height and all horizontal/vertical padding/margins. Inline-block elements have same behavior as block but without whole line break (other elements can be placed beside them)
– S.Serpooshan
Jan 4 '1...
Why does sys.exit() not exit when called inside a thread in Python?
...and I'm confused as to why the following code snippet would not exit when called in the thread, but would exit when called in the main thread.
...
HTML minification? [closed]
...s are very high that the cost/benefit for this effort is negligible, especially if you were planning to manually use online tools to deal with each page.
Use YSlow or Page Speed to determine what you really need to do to optimize your pages. My guess is that reducing bytes of HTML will not be yo...