大约有 40,000 项符合查询结果（耗时：0.0425秒） [XML]
Is a RelativeLayout more expensive than a LinearLayout?
...f you nest RelativeLayouts, you get an exponential measurement algorithm.
https://www.youtube.com/watch?v=NYtB6mlu7vA&t=1m41s
https://www.youtube.com/watch?v=NYtB6mlu7vA&t=38m04s
share
|
i...
Logging uncaught exceptions in Python
...
The method sys.excepthook will be invoked if an exception is uncaught: http://docs.python.org/library/sys.html#sys.excepthook
When an exception is raised and uncaught, the interpreter calls sys.excepthook with three arguments, the exception class, exception instance, and a traceback object. ...
Detect rotation of Android phone in the browser with JavaScript
...
It is possible in HTML5.
You can read more (and try a live demo) here: http://slides.html5rocks.com/#slide-orientation.
window.addEventListener('deviceorientation', function(event) {
var a = event.alpha;
var b = event.beta;
var g = event.gamma;
}, false);
It also supports deskop b...
How to use GROUP_CONCAT in a CONCAT in MySQL
... AS NAME
FROM test
GROUP BY ID, NAME
) AS A
GROUP BY ID;
SQL Fiddle: http://sqlfiddle.com/#!2/b5abe/9/0
share
|
improve this answer
|
follow
|
...
How do you implement a class in C? [closed]
... GOBject. it's an OS library that give you a verbose way to do an object.
http://library.gnome.org/devel/gobject/stable/
share
|
improve this answer
|
follow
...
What encoding/code page is cmd.exe using?
... program’s output encoding with the console’s output encoding
can be accomplished in two different ways:
A program can get the console’s current codepage using chcp or
GetConsoleOutputCP, and configure itself to output in that encoding, or
You or a program can set the console’s current cod...
Does Go have “if x in” construct similar to Python?
...ead of an array or slice, like this:
visitedURL := map[string]bool {
"http://www.google.com": true,
"https://paypal.com": true,
}
if visitedURL[thisSite] {
fmt.Println("Already been here.")
}
share
|
...
What is the difference between the kernel space and the user space?
...T instruction sets the address to the current descriptor table.
See also: http://wiki.osdev.org/Global_Descriptor_Table
the segment registers CS, DS, etc., which point to the index of an entry in the GDT.
For example, CS = 0 means the first entry of the GDT is currently active for the executing co...
If a DOM Element is removed, are its listeners also removed from memory?
...ts without removing data and events, use .detach()
instead.
Reference: http://api.jquery.com/remove/
jQuery v1.8.2 .remove() source code:
remove: function( selector, keepData ) {
var elem,
i = 0;
for ( ; (elem = this[i]) != null; i++ ) {
if ( !selector || jQuery.filter...
sed fails with “unknown option to `s'” error [closed]
...
The problem is with slashes: your variable contains them and the final command will be something like sed "s/string/path/to/something/g", containing way too many slashes.
Since sed can take any char as delimiter (without having to declare the new delimiter), you can try using another one that d...