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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...
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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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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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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