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How can I get the behavior of GNU's readlink -f on a Mac?
On Linux, the readlink utility accepts an option -f that follows additional links. This doesn't seem to work on Mac and possibly BSD based systems. What would the equivalent be?
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What is the difference between exit and return? [duplicate]
What is difference between return and exit statement in C programming when called from anywhere in a C program?
4 Answers
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How to save all the variables in the current python session?
I want to save all the variables in my current python environment. It seems one option is to use the 'pickle' module. However, I don't want to do this for 2 reasons:
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Replacing NAs with latest non-NA value
In a data.frame (or data.table), I would like to "fill forward" NAs with the closest previous non-NA value. A simple example, using vectors (instead of a data.frame ) is the following:
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CSS for grabbing cursors (drag & drop)
I have a JavaScript webapp where the user needs to grab the background to move the whole screen around. So I want the cursor to change when they're hovering over the background. The -moz-grab and -moz-grabbing CSS cursors are ideal for this. Of course, they only work in Firefox... are there ...
getenv() vs. $_ENV in PHP
What is the difference between getenv() and $_ENV ?
6 Answers
6
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How do I print the full value of a long string in gdb?
I want to print the full length of a C-string in GDB. By default it's being abbreviated, how do I force GDB to print the whole string?
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Explanation of JSHint's Bad line breaking before '+' error
Can someone explain to me why JSHint complains about the following,
3 Answers
3
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How do you reverse a string in place in JavaScript?
How do you reverse a string in place (or in-place) in JavaScript when it is passed to a function with a return statement, without using built-in functions ( .reverse() , .charAt() etc.)?
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Checking Bash exit status of several commands efficiently
Is there something similar to pipefail for multiple commands, like a 'try' statement but within bash. I would like to do something like this:
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