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How to calculate the number of occurrence of a given character in each row of a column of strings?
...eel expressive once you've used the regmatches and gregexpr together a few times, but that combo is powerful enough that I thought it deserved a plug.
– Josh O'Brien
Sep 14 '12 at 15:48
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Javascript: formatting a rounded number to N decimals
in JavaScript, the typical way to round a number to N decimal places is something like:
9 Answers
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Optional Parameters in Go?
...in benefits of the Functional options idiom are :
your API can grow over time without breaking existing code, because the constuctor signature stays the same when new options are needed.
it enables the default use case to be its simplest: no arguments at all!
it provides fine control over the init...
iOS 7 parallax effect in my view controller
...ooHoo Adding them as a group is obsolete? Where do you see that? As of the time of this writing the Apple docs don't have anything about it being obsolete. The whole purpose of grouping them is to improve performance. All effects in the group are rendered once. When you apply them separately, they m...
How can I generate an MD5 hash?
...ration with md.digest(bytes).
Feed the MessageDigest one byte[] chunk at a time by calling md.update(bytes). When you're done adding input bytes, calculate the hash with
md.digest().
The byte[] returned by md.digest() is the MD5 hash.
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Checking for a dirty index or untracked files with Git
...e new options, since they did not exist (or at least were not used) at the time the script was written).
Unfortunately the ‘everyday’ Git commands are the ‘porcelain’ commands, so most Git users may not be familiar with with the plumbing commands. The distinction between porcelain and plumb...
How to parse/read a YAML file into a Python object? [duplicate]
How to parse/read a YAML file into a Python object?
3 Answers
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How to assign name for a screen? [closed]
I'm using the screen multiplexer tool on the command shell and open a lot of screens. I then forget which process ID associates with which task.
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How to find the largest file in a directory and its subdirectories?
We're just starting a UNIX class and are learning a variety of Bash commands. Our assignment involves performing various commands on a directory that has a number of folders under it as well.
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What does $@ mean in a shell script?
...the arguments contain characters from IFS, they will split.
Most of the time what you will want to use is "$@", not $@.
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