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Return a `struct` from a function in C

Today I was teaching a couple of friends how to use C struct s. One of them asked if you could return a struct from a function, to which I replied: "No! You'd return pointers to dynamically malloc ed struct s instead." ...
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How to store a command in a variable in a shell script?

... Use eval: x="ls | wc" eval "$x" y=$(eval "$x") echo "$y" share | improve this answer | follow | ...
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How to get datetime in JavaScript?

... Semantically, you're probably looking for the one-liner new Date().toLocaleString() which formats the date in the locale of the user. If you're really looking for a specific way to format dates, I recommend the moment.js library. ...
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What does {0} mean when initializing an object?

...n {0} is used to initialize an object, what does it mean? I can't find any references to {0} anywhere, and because of the curly braces Google searches are not helpful. ...
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How to concatenate string variables in Bash

..." echo "${foo}" > Hello World In general to concatenate two variables you can just write them one after another: a='Hello' b='World' c="${a} ${b}" echo "${c}" > Hello World share | improve...
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Why are variables “i” and “j” used for counters?

I know this might seem like an absolutely silly question to ask, yet I am too curious not to ask... 23 Answers ...
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Outputting data from unit test in python

If I'm writing unit tests in python (using the unittest module), is it possible to output data from a failed test, so I can examine it to help deduce what caused the error? I am aware of the ability to create a customized message, which can carry some information, but sometimes you might deal with m...
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What's the difference between ES6 Map and WeakMap?

Looking this and this MDN pages it seems like the only difference between Maps and WeakMaps is a missing "size" property for WeakMaps. But is this true? What's the difference between them? ...
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Python datetime - setting fixed hour and minute after using strptime to get day,month,year

I've successfully converted something of 26 Sep 2012 format to 26-09-2012 using: 3 Answers ...
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multiprocessing.Pool: When to use apply, apply_async or map?

I have not seen clear examples with use-cases for Pool.apply , Pool.apply_async and Pool.map . I am mainly using Pool.map ; what are the advantages of others? ...