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python generator “send” function purpose?
...>> next(gen) # run up to the next yield
>>> gen.send(94.3) # goes into 'x' again
188.5999999999999
You can't do this just with yield.
As to why it's useful, one of the best use cases I've seen is Twisted's @defer.inlineCallbacks. Essentially it allows you to write a function...
Extracting bits with a single multiplication
...don't need and put the ones we want in the right place.
Multiplication by 4 (00000100) would shift everything left by 2 and get you to a00b0000 . To get the b to move up we need to multiply by 1 (to keep the a in the right place) + 4 (to move the b up). This sum is 5, and combined with the earlier...
OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection
... // contour orientation
if (approx.size() == 4 &&
fabs(contourArea(Mat(approx))) > 1000 &&
isContourConvex(Mat(approx)))
{
double maxCosine = 0;
...
Is Java's assertEquals method reliable?
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edited May 23 '17 at 11:54
Community♦
111 silver badge
answered Jul 29 '09 at 17:51
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Why is the asterisk before the variable name, rather than after the type?
... sense.
– Alyssa Haroldsen
Feb 27 '14 at 23:34
32
@Kupiakos It only makes more sense until you le...
const char* concatenation
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edited Jan 4 '10 at 5:18
answered Jan 3 '10 at 14:05
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Why is the use of tuples in C++ not more common?
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43
Because it's not yet standard. Anything non-standard has a much higher hurdle. Pieces of Boos...
Why do most C developers use define instead of const? [duplicate]
... Bart van Ingen SchenauBart van Ingen Schenau
14.1k44 gold badges2929 silver badges4040 bronze badges
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Change IPython/Jupyter notebook working directory
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edited Feb 11 '18 at 16:49
Brad Solomon
25.2k1414 gold badges8989 silver badges148148 bronze badges
an...
Placement of the asterisk in pointer declarations
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4, 5, and 6 are the same thing, only test is a pointer. If you want two pointers, you should use:
int *test, *test2;
Or, even better (to make everything clear):
int* test;
int* test2;
...