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How to replace case-insensitive literal substrings in Java
...anything. 2. "Sentence!End".replaceAll("(?i)Sentence.") does maybe replace more than anticipated.
– stracktracer
Apr 11 '12 at 11:54
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Why does intellisense and code suggestion stop working when Visual Studio is open?
...of time, anywhere from 5 minutes to over an hour) and all of a sudden, no more code suggestions or intellisense. Both seem to stop working completely at the same time.
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Xcode is not currently available from the Software Update server
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Can I have an IF block in DOS batch file?
...with echo.
I'm using the built-in ERRORLEVEL variable just as a test. Read more here
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What really is a deque in STL?
...as a circular buffer, which would allow the circular buffer resizing to be more efficient: Only copy the pointers instead of all elements in the queue. Still that's a small benefit it seems.
– Wernight
Feb 17 '13 at 13:03
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Algorithm to detect corners of paper sheet in photo
...ving small objects and or noise, lower the canny restraints, so it accepts more edges, and then find the largest closed contour (in OpenCV use findcontour() with some simple parameters, I think I used CV_RETR_LIST). might still struggle when it's on a white piece of paper, but was definitely providi...
How can I extract a good quality JPEG image from a video file with ffmpeg?
...put.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 will work with any video input. See below if your input is MJPEG.
MJ...
NSOperation vs Grand Central Dispatch
...ng a custom NSOperation or NSInvocationOperation to do this requires a lot more supporting code. I know that you can use an NSBlockOperation, but you might as well be dispatching something to GCD then. Wrapping this code in blocks inline with related processing in your application leads in my opinio...
The model backing the context has changed since the database was created
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Make copy of an array
...ut micro-performance issues, which 99.999% of the time, don't matter. The more important point is that src.clone() is more readable and has far less opportunity for error than allocating a new array and doing arraycopy. (And also happens to be fast.)
– Brian Goetz
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