大约有 30,000 项符合查询结果（耗时：0.0396秒） [XML]
Ruby: kind_of? vs. instance_of? vs. is_a?
...ver. Use polymorphism instead.
Why are there so many of them?
I wouldn't call two "many". There are two of them, because they do two different things.
share
|
improve this answer
|
...
Purpose of #!/usr/bin/python3
...
That's called a hash-bang. If you run the script from the shell, it will inspect the first line to figure out what program should be started to interpret the script.
A non Unix based OS will use its own rules for figuring out how t...
iPhone Simulator - Simulate a slow connection?
...
An app called SpeedLimit
https://github.com/mschrag/speedlimit
Works great.
chris.
share
|
improve this answer
|
...
Remove .php extension with .htaccess
...or the directory 'foobar':
example.com/foobar
from a request for a file called foobar (which is actually foobar.php)
example.com/foobar
It might be possible if you used the RewriteBase directive. But if you do that then this problem gets way more complicated as you're going to require RewriteC...
Get checkbox value in jQuery
... this:
$("input[type='checkbox']").val();
Or if you have set a class or id for it, you can:
$('#check_id').val();
$('.check_class').val();
However this will return the same value whether it is checked or not, this can be confusing as it is different to the submitted form behaviour.
To check w...
Scrollview vertical and horizontal in android
...d solution:
Custom ScrollView:
package com.scrollable.view;
import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.ScrollView;
public class VScroll extends ScrollView {
public VScroll(Context context, AttributeSet attrs, int ...
GCD to perform task in main thread
I have a callback which might come from any thread. When I get this callback, then I would like to perform a certain task on the main thread.
...
How do I link to part of a page? (hash?)
...
If there is an <a name="foo"> tag or any tag with an id (e.g., <div id="foo">), then you can simply append #foo to the URL. Otherwise, you can't arbitrarily link to portions of a page.
Here's a complete example: <a href="http://example.com/page.html#foo">Jump to #...
Mismatch Detected for 'RuntimeLibrary'
...aving the same idea about the size of objects on either side of a function call.
Consider for example that the above two pieces of code are called A and B. A is compiled against one version of the standard library, and B against another. In A's view, some random object that a standard function retu...
SQL Inner-join with 3 tables?
...owing (I guessed on table fields,etc)
SELECT s.studentname
, s.studentid
, s.studentdesc
, h.hallname
FROM students s
INNER JOIN hallprefs hp
on s.studentid = hp.studentid
INNER JOIN halls h
on hp.hallid = h.hallid
Based on your request for multiple halls you could do it this ...