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How to perform Callbacks in Objective-C
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Normally, callbacks in objective C are done with delegates. Here's an example of a custom delega...
How do I run IDEA IntelliJ on Mac OS X with JDK 7?
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74
UPDATE:
When running IDEA 12 on JDK 1.7 (after changing JVMVersion to 1.7* in Info.plist) make ...
Making a Location object in Android with latitude and longitude values
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edited Mar 13 '17 at 7:04
Phan Van Linh
38.2k1717 gold badges187187 silver badges203203 bronze badges
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How to construct a set out of list items in python?
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edited Apr 2 '13 at 16:14
answered Apr 2 '13 at 16:02
mgi...
Adding data attribute to DOM
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432
Use the .data() method:
$('div').data('info', '222');
Note that this doesn't create an actu...
HTML/Javascript change div content
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434
Assuming you're not using jQuery or some other library that makes this sort of thing easier fo...
Strange \n in base64 encoded string in Ruby
The inbuilt Base64 library in Ruby is adding some '\n's. I'm unable to find out the reason. For this special example:
6 Ans...
How can I extract a good quality JPEG image from a video file with ffmpeg?
... the default is -qmin 2).
To output a series of images:
ffmpeg -i input.mp4 -qscale:v 2 output_%03d.jpg
See the image muxer documentation for more options involving image outputs.
To output a single image at ~60 seconds duration:
ffmpeg -ss 60 -i input.mp4 -qscale:v 4 -frames:v 1 output.jpg
This ...
How to un-commit last un-pushed git commit without losing the changes
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994
There are a lot of ways to do so, for example:
in case you have not pushed the commit publicly ...