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Can comments be used in JSON?

... No. The JSON should all be data, and if you include a comment, then it will be data too. You could have a designated data element called "_comment" (or something) that would be ignored by apps that use the JSON data. You would probably be bett...
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How to exit from Python without traceback?

... If sys.exit() is called in "main program stuff", the code above throws away the value passed to sys.exit. Notice that sys.exit raises SystemExit and the variable "e" will contain the exit code. – bstpierre ...
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What is the difference between join and merge in Pandas?

... pandas.merge() is the underlying function used for all merge/join behavior. DataFrames provide the pandas.DataFrame.merge() and pandas.DataFrame.join() methods as a convenient way to access the capabilities of pandas.merge(). For example, df1.merge(right=df2, ...) is equiva...
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How to achieve function overloading in C?

...sociation list that looks a bit like a switch block. _Generic gets the overall type of the expression and then "switches" on it to select the end result expression in the list for its type: _Generic(1, float: 2.0, char *: "2", int: 2, default: get_two_object()); ...
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Sibling package imports

...ks well for private scripts, but there has been several improvements Installing the package (in a virtualenv or not) will give you what you want, though I would suggest using pip to do it rather than using setuptools directly (and using setup.cfg to store the metadata) Using the -m flag and runnin...
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What is the effect of extern “C” in C++?

...very compiler is required to provide "C" linkage A linkage specification shall occur only in namespace scope All function types, function names and variable names have a language linkage See Richard's Comment: Only function names and variable names with external linkage have a language linkage Two ...
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Multiple “order by” in LINQ

... How on earth have I gone all this time without knowing about ThenBy?! (Edit: looks like it was introduced in .NET 4.0, which explains how it slipped past me unnoticed.) – Jordan Gray Nov 21 '13 at 15:05 ...
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How do I get a PHP class constructor to call its parent's parent's constructor?

I need to have a class constructor in PHP call its parent's parent's (grandparent?) constructor without calling the parent constructor. ...
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How do I achieve the theoretical maximum of 4 FLOPs per cycle?

... while (i < 1000){ // Here's the meat - the part that really matters. r0 = _mm_mul_pd(r0,rC); r1 = _mm_add_pd(r1,rD); r2 = _mm_mul_pd(r2,rE); r3 = _mm_sub_pd(r3,rF); r4 = _mm_mul_pd(r4,rC); r5 = _mm_add_pd(r5...
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What is a “callable”?

...t's clear what a metaclass is , there is an associated concept that I use all the time without knowing what it really means. ...