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What does it mean in shell when we put a command inside dollar sign and parentheses: $(command)
I just want to understand following line of code in shell. It is used to get the current working directory. I am aware that $(variable) name return the value inside the variable name, but what is $(command) supposed to return? Does it return the value after executing the command? In that case, w...
Should struct definitions go in .h or .c file?
I've seen both full definitions of struct s in headers and just declarations—is there any advantage to one method over the other?
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What are “res” and “req” parameters in Express functions?
In the following Express function:
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CSS container div not getting height
...t my container div to get the height of max of its children's height. without knowing what height the child div s are going to have. I was trying out on JSFiddle . The container div is on red. which is not showing up. Why?
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Pandas every nth row
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I'd use iloc, which takes a row/column slice, both based on integer position and following normal python syntax.
df.iloc[::5, :]
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Custom numeric format string to always display the sign
Is there any way I can specify a standard or custom numeric format string to always output the sign, be it +ve or -ve (although what it should do for zero, I'm not sure!)
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PostgreSQL naming conventions
Where can I find a detailed manual about PostgreSQL naming conventions? (table names vs. camel case, sequences, primary keys, constraints, indexes, etc...)
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How do I script a “yes” response for installing programs?
I work with Amazon Linux instances and I have a couple scripts to populate data and install all the programs I work with, but a couple of the programs ask:
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How do I setup a SSL certificate for an express.js server?
Before, in an older version of express, I could do this:
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Convert list to tuple in Python
I'm trying to convert a list to a tuple.
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