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Pretty-print an entire Pandas Series / DataFrame
I work with Series and DataFrames on the terminal a lot. The default __repr__ for a Series returns a reduced sample, with some head and tail values, but the rest missing.
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What are POD types in C++?
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In C++11, you can do std::is_pod<MyType>() to tell whether MyType is POD.
– allyourcode
Mar 31 '14 at 21:24
7
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Count how many records are in a CSV Python?
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You need to count the number of rows:
row_count = sum(1 for row in fileObject) # fileObject is your csv.reader
Using sum() with a generator expression makes for an efficient counter, avoiding storing the whole file in memory.
If you already read 2 rows to start ...
How much is the overhead of smart pointers compared to normal pointers in C++?
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std::unique_ptr has memory overhead only if you provide it with some non-trivial deleter.
std::shared_ptr always has memory overhead for reference counter, though it is very small.
std::unique_ptr has time overhead only during constru...
JavaScript post request like a form submit
...y: post('/contact/', {name: 'Johnny Bravo', csrfmiddlewaretoken: $("#csrf_token").val()});
– Davidson Lima
Nov 22 '17 at 16:09
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Removing colors from output
...all conceivable ANSI escape sequences:
./somescript | sed 's/\x1B[@A-Z\\\]^_]\|\x1B\[[0-9:;<=>?]*[-!"#$%&'"'"'()*+,.\/]*[][\\@A-Z^_`a-z{|}~]//g'
(and if you have @edi9999's SI problem, add | sed "s/\x0f//g" to the end; this works for any control char by replacing 0f with the hex of the u...
How to use clock() in C++
...#include <cstdio>
#include <ctime>
int main() {
std::clock_t start;
double duration;
start = std::clock();
/* Your algorithm here */
duration = ( std::clock() - start ) / (double) CLOCKS_PER_SEC;
std::cout<<"printf: "<< duration <<'\n';
}
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How can I check if a background image is loaded?
...'<img/>').attr('src', 'http://farm6.static.flickr.com/5049/5220175127_5693faf952.jpg').load(function() { $('html').css('background-image', 'url(http://farm6.static.flickr.com/5049/5220175127_5693faf952.jpg)'); })) and check HTTP requests in Firebug. If I have opened flicker page with this imag...
Using a piano keyboard as a computer keyboard [closed]
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@I__: Some programs try to talk directly to the keyboard device and so don't play nicely with "sendkeys"-like interfaces. Hopefully this is even less common now than some years ago when I last dealt with this, and so as I say, ...
Using multiple arguments for string formatting in Python (e.g., '%s … %s')
...swered Jul 18 '14 at 17:49
Lordn__nLordn__n
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