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How to write to a JSON file in the correct format
I am creating a hash in Ruby and want to write it to a JSON file, in the correct format.
4 Answers
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pandas three-way joining multiple dataframes on columns
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Assumed imports:
import pandas as pd
John Galt's answer is basically a reduce operation. If I have more than a handful of dataframes, I'd put them in a list like this (generated via list comprehensions or loops or whatnot):
dfs = [...
How do I clear this setInterval inside a function?
Normally, I’d set the interval to a variable and then clear it like var the_int = setInterval(); clearInterval(the_int); but for my code to work I put it in an anonymous function:
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Using generic std::function objects with member functions in one class
For one class I want to store some function pointers to member functions of the same class in one map storing std::function objects. But I fail right at the beginning with this code:
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Image library for Python 3
What is python-3 using instead of PIL for manipulating Images?
8 Answers
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How to get the second column from command output?
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Or use sed & regex.
<some_command> | sed 's/^.* \(".*"$\)/\1/'
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Officially, what is typename for?
On occasion I've seen some really indecipherable error messages spit out by gcc when using templates... Specifically, I've had problems where seemingly correct declarations were causing very strange compile errors that magically went away by prefixing the typename keyword to the beginning of the...
Install NPM into home directory with distribution nodejs package (Ubuntu)
I'd like to use the distribution Node.js packages (or the chris-lea ppa for more recent releases) but install NPM to my home directory.
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Numpy first occurrence of value greater than existing value
...True ("In case of multiple occurrences of the maximum values, the indices corresponding to the first occurrence are returned.") and doesn't save another list.
In [2]: N = 10000
In [3]: aa = np.arange(-N,N)
In [4]: timeit np.argmax(aa>N/2)
100000 loops, best of 3: 52.3 us per loop
In [5]: time...
How can I switch themes in Visual Studio 2012
...rk. I want to switch the theme to Dark, but I'm not able to find any menus or options to do that.
10 Answers
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