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Items in JSON object are out of order using “json.dumps”?
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Both Python dict (before Python 3.7) and JSON object are unordered collections. You could pass sort_keys parameter, to sort the keys:
>>> import json
>>> json.dumps({'a': 1, 'b': 2})
'{"b": 2, "a": 1}'
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Defining a variable with or without export
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export makes the variable available to sub-processes.
That is,
export name=value
means that the variable name is available to any process you run from that shell process. If you want a process to make use of this variable, use export, and run ...
Python multiprocessing pool.map for multiple arguments
In the Python multiprocessing library, is there a variant of pool.map which supports multiple arguments?
19 Answers
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R - Concatenate two dataframes?
Given two dataframes a and b :
5 Answers
5
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Test whether a Ruby class is a subclass of another class
I would like to test whether a class inherits from another class, but there doesn't seem to exist a method for that.
2 Answ...
List all base classes in a hierarchy of given class?
... (whether it is a new-style class or not), how do you generate all the base classes - anywhere in the inheritance hierarchy - it issubclass of?
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how to compare two elements in jquery [duplicate]
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You could compare DOM elements. Remember that jQuery selectors return arrays which will never be equal in the sense of reference equality.
Assuming:
<div id="a" class="a"></div>
this:
$('div.a')[0] == $('div#a')[0]
returns true.
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How to find common elements from multiple vectors?
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There might be a cleverer way to go about this, but
intersect(intersect(a,b),c)
will do the job.
EDIT: More cleverly, and more conveniently if you have a lot of arguments:
Reduce(intersect, list(a,b,c))
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How do I zip two arrays in JavaScript? [duplicate]
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Use the map method:
var a = [1, 2, 3]
var b = ['a', 'b', 'c']
var c = a.map(function(e, i) {
return [e, b[i]];
});
console.log(c)
DEMO
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Why does Google +1 record my mouse movements? [closed]
This is only on pages with a Google +1 box on my website:
9 Answers
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