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Regular expression for a string containing one word but not another
...first bit, (?!.*details.cfm) is a negative look-ahead: before matching the string it checks the string does not contain "details.cfm" (with any number of characters before it).
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Rails 3: “field-with-errors” wrapper changes the page appearance. How to avoid this?
... Anurag: if html_tag happens to be nil, or anything other than a string, then a plain html_tag.html_safe would rais an error. Putting it in "#{html_tag}" implicitly calls html_tag.to_s, which hopefully will return a string, which will then be able to respond to html_safe
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What's the yield keyword in JavaScript?
...n
You have this end }) which you need to keep track of everywhere
All this extra function (err, result) jargon
Not exactly clear that you're doing this to assign a value to result
On the other hand, with yield, all of this can be done in one line with the help of the nice co-routine framework.
fu...
how to debug the js in jsfiddle
...tool panel, under "jsfiddle.net", then under my named folder, there was an extra directory with another index file that showed the code. Hope this helps!
– MilesMorales
Mar 7 '16 at 19:09
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Pimpl idiom vs Pure virtual class interface
... important. It's appropriate for it to be a key in a std::map. Example, a "string" class, or a "date" class, or a "complex number" class. To "copy" instances of such a class makes sense.
An Entity type
Identity is important. Always passed by reference, never by "value". Often, doesn't make sense t...
How to find unused images in an Xcode project?
...ed with @2x they will list as unused. You can get rid of that by adding an extra if-statement: if [[ "$name" != @2x ]]; then
– Sten
Jul 3 '13 at 9:49
3
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How to do something to each file in a directory with a batch script
...e delimiter the for /f command is using. for example, you can use the pipe char.
for /f "delims=|" %%f in ('dir /b c:\') do echo %%f
Update 2: (quick one year and a half after the original answer :-)) If the directory name itself has a space in the name, you can use the usebackq option on the for...
Weird Integer boxing in Java
...
public class Scratch
{
public static void main(String[] args)
{
Integer a = 1000, b = 1000; //1
System.out.println(a == b);
Integer c = 100, d = 100; //2
System.out.println(c == d);
}
}
Output:
false
true
Yep the first output...
Building a notification system [closed]
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notification_object.object identifies change type, like a string "friendship" The actual reference to changed object with its extra data that I talk about is in notification_change.notificationObjectID
– Artjom Kurapov
Apr 29 '13 at 7:35
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Modifying location.hash without page scrolling
...d node was last seen so you need to help them a little. You need to add an extra div to the top of the viewport, set its ID to the hash, and then roll everything back:
hash = hash.replace( /^#/, '' );
var fx, node = $( '#' + hash );
if ( node.length ) {
node.attr( 'id', '' );
fx = $( '<div&g...