大约有 19,000 项符合查询结果（耗时：0.0360秒） [XML]
How to avoid having class data shared among instances?
... def __init__(self):
self.list = []
Declaring the variables inside the class declaration makes them "class" members and not instance members. Declaring them inside the __init__ method makes sure that a new instance of the members is created alongside every new instance of the object, whi...
Inserting multiple rows in a single SQL query? [duplicate]
...data to insert at once, say 4 rows. My table has three columns: Person , Id and Office .
4 Answers
...
MySQL Database won't start in XAMPP Manager-osx
...
Didn't work for me: Starting MySQL ..................................................................................................... ERROR! The server quit without updating PID file (/Applications/XAMPP/xamppfiles/var/my...
performing HTTP requests with cURL (using PROXY)
...n I run this command: curl -x, --proxy 122.72.2.200:80 mysite.com/test.php?id=1
– user873286
Feb 27 '12 at 22:52
63
...
What's the difference between MyISAM and InnoDB? [duplicate]
... and MyISAM, the first step is in determining if you need the features provided by InnoDB. If not, then MyISAM is up for consideration.
A more detailed discussion of differences is rather impractical (in this forum) absent a more detailed discussion of the problem space... how the application will u...
Are there any side effects of returning from inside a using() statement?
Returning a method value from inside a using statement that gets a DataContext seems to always work fine , like this:
5 ...
What are the Ruby Gotchas a newbie should be warned about? [closed]
...s simple as I had expected. More precisely, the "rule of least-surprise" did not seem very respected to me (of course this is quite subjective). For example:
...
Error inflating class fragment
...
As hdemirchian said, make sure to use:
import android.support.v4.app.Fragment;
And also make sure that the Activity that is using the fragment(s) extends FragmentActivity instead of the regular Activity,
import android.support.v4.app.Fra...
jquery disable form submit on enter
...
If keyCode is not caught, catch which:
$('#formid').on('keyup keypress', function(e) {
var keyCode = e.keyCode || e.which;
if (keyCode === 13) {
e.preventDefault();
return false;
}
});
EDIT: missed it, it's better to use keyup instead of keypress
EDIT 2:...
Is there a way to create your own html tag in HTML5?
...gs in browsers, although they won’t be HTML5 (see Are custom elements valid HTML5? and the HTML5 spec).
Let's assume you want to use a custom tag element called <stack>. Here's what you should do...
STEP 1
Normalize its attributes in your CSS Stylesheet (think css reset) -
Example:
sta...