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Checking from shell script if a directory contains files
...{#files} -gt 0 ]; or maybe you just forgot the () around the sub-shell command? files=($(shopt -s nullglob;shopt -s dotglob;echo /some/dir/*))
– stoutyhk
Jul 4 '13 at 17:48
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Convert a series of parent-child relationships into a hierarchical tree?
...sic recursive function to parse the child/parent pairs to a tree structure and another recursive function to print it out. Only one function would suffice but here's two for clarity (a combined function can be found at the end of this answer).
First initialize the array of child/parent pairs:
$tre...
What is the difference between substr and substring?
...t it to the end of the string (no second argument)
– André Chalella
Oct 20 '15 at 2:48
This is so ridiculous that I a...
Android TextWatcher.afterTextChanged vs TextWatcher.onTextChanged
...t circumstances should I use afterTextChanged instead of onTextChanged and vice versa?
3 Answers
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PHP server on local machine?
I'm trying to build a PHP site and I'm wanting to test my PHP files without uploading them to my host. Basically testing them on my own machine before I upload them. How do I do that?
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psql: FATAL: role “postgres” does not exist
...ep is to check the missing role: What is the output within psql of the command \du ? On my Ubuntu system the relevant line looks like this:
List of roles
Role name | Attributes | Member of
-----------+-----------------------------------+-------...
Convert SQLITE SQL dump file to POSTGRESQL
...n POSTGRESQL. I just updated my local database with a huge amount of data and need to transfer a specific table to the production database.
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Running Python code in Vim
I am writing Python code using Vim, and every time I want to run my code, I type this inside Vim:
20 Answers
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How do you count the lines of code in a Visual Studio solution?
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Ultimate and Premium, I think
– Stefan Dragnev
Aug 29 '11 at 16:42
42
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How to convert a String into an ArrayList?
...sList. The OP wanted to have an ArrayList (which is completely reasonable) and the the ArrayList construction is necessary.
– aioobe
Nov 14 '14 at 17:37
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