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Hidden features of C
I know there is a standard behind all C compiler implementations, so there should be no hidden features. Despite that, I am sure all C developers have hidden/secret tricks they use all the time.
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Algorithm to detect corners of paper sheet in photo
...n are awesome, move to them as soon as possible. :D
Instead of removing 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 stru...
Limit a stream by a predicate
...suming the predicate doesn't throw or have a side-effect if executed a few extra times). The problem is doing it in the context of recursive decomposition (fork/join framework) that Streams use. Really, it's Streams that are horribly inefficient.
– Aleksandr Dubinsky
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What is the global interpreter lock (GIL) in CPython?
...n it could make a lot of sense. But the threading library wont let you use extra CPU cores.
Multi-threading can be outsourced to the operating system (by doing multi-processing), some external application that calls your Python code (eg, Spark or Hadoop), or some code that your Python code calls (e...
Cleanest way to get last item from Python iterator
...specific default value could even be correct? If the iterator doesn't actually iterate, then an out-of-band value is more meaningful than some misleading function-specific default.
– S.Lott
Jan 26 '10 at 11:44
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Location of parenthesis for auto-executing anonymous JavaScript functions?
... As you can see in this video!!.
The only reason for the existence of the extra wrapping () {in both styles} is to help make that section of code Function Expression, because Function Declaration cannot be immediately called. Some scripts / minify-ers just use +, !, - & ~ instead of too parenth...
What is the difference between '/' and '//' when used for division?
...floating point division, and the latter is floor division, sometimes also called integer division.
In Python 2.2 or later in the 2.x line, there is no difference for integers unless you perform a from __future__ import division, which causes Python 2.x to adopt the 3.x behavior.
Regardless of the ...
What does the Q_OBJECT macro do? Why do all Qt objects need this macro?
I just started using Qt and noticed that all the example class definitions have the macro Q_OBJECT as the first line. What is the purpose of this preprocessor macro?
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How can i query for null values in entity framework?
...g this bug!
For backwards compatibility, it will be opt-in - you need manually enable a setting to make entry == value work. No word yet on what this setting is. Stay tuned!
Edit 2: According to this post by the EF team, this issue has been fixed in EF6! Woohoo!
We changed the default be...
In AngularJS, what's the difference between ng-pristine and ng-dirty?
...ss cognitive step to comprehend than !ng-hide. your brain needs to do that extra step and thus you more likely to introduce bugs
– Damian Green
Aug 20 '14 at 8:32
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