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Image Greyscale with CSS & re-color on mouse-over?
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I use the following code on http://www.diagnomics.com/
Smooth transition from b/w to color with magnifying effect (scale)
img.color_flip {
filter: url(filters.svg#grayscale); /* Firefox 3.5+ */
filter: gray; /* IE5+ */
-webkit-filter: grayscale(1); /* Webkit Nightlies & ...
When should you NOT use a Rules Engine? [closed]
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I will give 2 examples from personal experience where using a Rules Engine was a bad idea, maybe that will help:-
On a past project, I noticed that the rules files (the project used Drools) contained a lot of java code, including loops, functions...
How can I get the last 7 characters of a PHP string?
...ive number for the 2nd argument.
$newstring = substr($dynamicstring, -7);
From the php docs:
string substr ( string $string , int $start [, int $length ] )
If start is negative, the returned string will start at the start'th character from the end of string.
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How to check if type of a variable is string?
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@Yarin if you're porting something from 2.x to 3.x, you can always assign basestring = str.
– Jack
Apr 20 '15 at 23:50
9
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#pragma mark in Swift?
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Up to Xcode 5 the preprocessor directive #pragma mark existed.
From Xcode 6 on, you have to use // MARK:
These preprocessor features allow to bring some structure to the function drop down box of the source code editor.
some examples :
// MARK:
-> will be preceded by a horizontal...
How to resize superview to fit all subviews with autolayout?
...ze: UILayoutFittingCompressedSize];
NSLog( @"fittingSize: %@", NSStringFromCGSize( s ));
return s.height;
}
- (UITableViewCell *) tableView: (UITableView *) tableView cellForRowAtIndexPath: (NSIndexPath *) indexPath
{
TSTableViewCell *cell = (TSTableViewCell*)[tableView dequeueReusable...
How to stop creating .DS_Store on Mac? [closed]
.../usr/local/.dscage
After that, You could delete recursively all .DS_Store from your mac.
find ~ -name ".DS_Store" -delete
or
find <your path> -name ".DS_Store" -delete
You should repeat procedure after each Mac major update.
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Where to install Android SDK on Mac OS X?
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Now the android-sdk has migrated from homebrew/core to homebrew/cask.
brew tap homebrew/cask
and install android-sdk using
brew cask install android-sdk
You will have to add the ANDROID_HOME to profile (.zshrc or .bashrc)
export ANDROID_HOME=/usr/loca...
Best way to center a on a page vertically and horizontally? [duplicate]
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The main trick in this demo is that in the normal flow of elements going from top to bottom, so the margin-top: auto is set to zero. However, an absolutely positioned element acts the same for distribution of free space, and similarly can be centered vertically at the specified top and bottom (doe...
How can I start an interactive console for Perl?
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perlconsole doesn't suffer from these problems.
– Geremia
Sep 5 '16 at 16:53
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