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How to sort a dataFrame in python pandas by two or more columns?
...
490
As of the 0.17.0 release, the sort method was deprecated in favor of sort_values. sort was comp...
Too many 'if' statements?
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600
If you cannot come up with a formula, you can use a table for such a limited number of outcomes...
In CMake, how can I test if the compiler is Clang?
...so work correctly if a compiler wrapper like ccache is used.
As of CMake 3.0.0 the CMAKE_<LANG>_COMPILER_ID value for Apple-provided Clang is now AppleClang. To test for both the Apple-provided Clang and the regular Clang use the following if condition:
if (CMAKE_CXX_COMPILER_ID MATCHES "Clang...
Stacked Tabs in Bootstrap 3
...,
.tabs-right > .nav-tabs,
.tabs-left > .nav-tabs {
border-bottom: 0;
}
.tab-content > .tab-pane,
.pill-content > .pill-pane {
display: none;
}
.tab-content > .active,
.pill-content > .active {
display: block;
}
.tabs-below > .nav-tabs {
border-top: 1px solid #ddd;
}
...
Why does the month argument range from 0 to 11 in JavaScript's Date constructor?
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60
It's an old (probably unfortunate, probably dying) tradition in the programming world, see the o...
Regular expression to match non-ASCII characters?
...
This should do it:
[^\x00-\x7F]+
It matches any character which is not contained in the ASCII character set (0-127, i.e. 0x0 to 0x7F).
You can do the same thing with Unicode:
[^\u0000-\u007F]+
For unicode you can look at this 2 resources:
...
figure of imshow() is too small
...'t need an equal aspect you can set aspect to auto
imshow(random.rand(8, 90), interpolation='nearest', aspect='auto')
which gives the following figure
If you want an equal aspect ratio you have to adapt your figsize according to the aspect
fig, ax = subplots(figsize=(18, 2))
ax.imshow(random....
How can I replace a regex substring match in Javascript?
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140
var str = 'asd-0.testing';
var regex = /(asd-)\d(\.\w+)/;
str = str.replace(regex, "$11$2");
c...
OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection
...on
Mat blurred(image);
medianBlur(image, blurred, 9);
Mat gray0(blurred.size(), CV_8U), gray;
vector<vector<Point> > contours;
// find squares in every color plane of the image
for (int c = 0; c < 3; c++)
{
int ch[] = {c, 0};
mixChannels(&...