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How to remove RVM (Ruby Version Manager) from my system
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There's a simple command built-in that will pull it:
rvm implode
This will remove the rvm/ directory and all the rubies built within it. In order to remove the final trace of rvm, you need to remove the rvm gem, too:
gem uninstall rvm
If you've made ...
Polymorphism with gson
I have a problem deserializing a json string with Gson.
I receive an array of commands. The command can be start, stop , some other type of command. Naturally I have polymorphism, and start/stop command inherit from command.
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How to reshape data from long to wide format
I'm having trouble rearranging the following data frame:
11 Answers
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Difference between database and schema
What's the difference between a Database and a Schema in SQL Server? Both are the containers of tables and data.
5 Answers
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PhpStorm text size
Is it possible to define a shortcut to increase/decrease size of code in PhpStorm, like what you can do in Notepad++ with CTRL + Mouse Wheel ?
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Optimal number of threads per core
Let's say I have a 4-core CPU, and I want to run some process in the minimum amount of time. The process is ideally parallelizable, so I can run chunks of it on an infinite number of threads and each thread takes the same amount of time.
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How do I assert my exception message with JUnit Test annotation?
...esn't provide this feature but does any future versions provide it? I know in .NET you can assert the message and the exception class. Looking for similar feature in the Java world.
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Swift - How to convert String to Double
I'm trying to write a BMI program in swift language.
And I got this problem: how to convert a String to a Double?
29 Answer...
Parallel.ForEach vs Task.Factory.StartNew
What is the difference between the below code snippets? Won't both be using threadpool threads?
4 Answers
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how to File.listFiles in alphabetical order?
...names lexicographically. If you want to sort them differently, you can define your own comparator.
If you prefer using Streams:
A more modern approach is the following. To print the names of all files in a given directory, in alphabetical order, do:
Files.list(Paths.get(dirName)).sorted().forEac...