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Is there a regular expression to detect a valid regular expression?
...
/
^ # start of string
( # first group start
(?:
(?:[^?+*{}()[\]\\|]+ # literals and ^, $
| \\. # escaped characters
...
How does Google's Page Speed lossless image compression work?
...www.jpegclub.org/jpegtran. I ran the executable using the DOS prompt (use Start > CMD). To get exactly the same file size (down to the byte) as PageSpeed compression, I specified Huffman optimization as follows:
jpegtran -optimize source_filename.jpg output_filename.jpg
For more help on comp...
Python in Xcode 4+?
... hardwired path; 2) when I run the python script Xcode stops at dyld`_dyld_start: If I "continue" it seems to work. Anyone else experience this?
– mts
Nov 21 '13 at 21:02
...
'dragleave' of parent element fires when dragging over children elements
... if (collection.size() === 0) {
self.trigger('dndHoverStart');
}
collection = collection.add(event.target);
});
self.on('dragleave', function(event) {
/*
* Firefox 3.6 fires the dragleave event on the previous ele...
What's the difference between TRUNCATE and DELETE in SQL
... that table, primary key column holds value like 1,2,3,4,5....(if Identity starts from 1 and seed is 1), and when you truncate table it will lost all identity value, so when you start inserting data into that table again it will starts from 1 instead of where it is left last. In DELETE, it's reverse...
Comparison between Corona, Phonegap, Titanium
...on't know... is that a stupid name? It's easier to say - I know that much) start their lives as web apps and end their lives as web apps. On the iPhone, your html/js/etc. is just executed inside a UIWebView control, and the PhoneGap JavaScript APIs your js calls are routed to native APIs.
Titanium ...
How to get image height and width using java?
... result = path.substring(path.lastIndexOf('.'));
if (result.startsWith(".")) {
result = result.substring(1);
}
}
}
return result;
}
This solution is very quick as only image size is read from the file and not the whole image. I tested it a...
How to extract a string using JavaScript Regex?
...e
character.
Get rid of the ^ and $. With the global option they match on start and end of the full string, rather than on start and end of lines. Match on explicit newlines instead.
I suppose you want the matching group (what's
inside the parenthesis) rather than
the full array? arr[0] is
the full...
Why does viewWillAppear not get called when an app comes back from the background?
...tiveNotification is incorrect (despite all the people upvoting it). On App start (and only on app start!) this notification is called differently - it is called in addition to viewWillAppear, so with this answer you'll get it called twice. Apple made it unnecessarily difficult to get this right - th...
Select which href ends with some string
...y.com/Selectors
For attributes:
= is exactly equal
!= is not equal
^= is starts with
$= is ends with
*= is contains
~= is contains word
|= is starts with prefix (i.e., |= "prefix" matches "prefix-...")
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