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Test for non-zero length string in Bash: [ -n “$var” ] or [ “$var” ]
I've seen Bash scripts test for a non-zero length string in two different ways. Most scripts use the -n option:
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How to avoid reinstalling packages when building Docker image for Python projects?
My Dockerfile is something like
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How to load assemblies in PowerShell?
The following PowerShell code
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Simulate CREATE DATABASE IF NOT EXISTS for PostgreSQL?
I want to create a database which does not exist through JDBC. Unlike MySQL, PostgreSQL does not support create if not exists syntax. What is the best way to accomplish this?
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What's the best way to parse a JSON response from the requests library?
I'm using the python requests module to send a RESTful GET to a server, for which I get a response in JSON. The JSON response is basically just a list of lists.
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How do you run a command for each line of a file?
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Most efficient conversion of ResultSet to JSON?
The following code converts a ResultSet to a JSON string using JSONArray and JSONObject .
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Make a negative number positive
I have a Java method in which I'm summing a set of numbers. However, I want any negatives numbers to be treated as positives. So (1)+(2)+(1)+(-1) should equal 5.
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Really Cheap Command-Line Option Parsing in Ruby
EDIT: Please, please , please read the two requirements listed at the bottom of this post before replying. People keep posting their new gems and libraries and whatnot, which clearly don't meet the requirements.
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Visual Studio TFS shows unchanged files in the list of pending changes
I see a file in pending changes window. I try to compare it with latest version and I get an a message 'The files are identical' If the files are identical why is this file showing up in pending changes window? What changed about this file? Can I configure TFS not to list files that are identical?...