Using Ruby to Parse CSVs Parsing data from comma-separated values (CSVs) is a relatively common task. Using Ruby to parse CSVs makes this process easier because Ruby hasits own built-in CSV class and interface. Parsing CSVs in Ruby: The Basics You can either choose to process CSV data ...
Notice that this doesn't permanently change your array. Most Ruby methods will create a new array with the changes you requested. So if you want to save the results you need to use a variable or in this example, use theuniq!method. If you want to pick onerandom elementfrom your array ...
Arrays are probably the most popular data structure you’re going to use in Ruby. They allow you to group data as a list of elements. The elements in the array don’t have to be of the same type. They can be anything. Even other arrays if you want. How to create an array Here’...
Use the dockerdocker tagcommand to tag your local image to your registry docker tag my-ruby-docker-image:latest <my-registry-name>.azurecr.io/my-ruby-docker-image Next, use the dockerdocker pushcommand to push the image to Azure Container Registry ...
You use this syntax todefine a heredocin Ruby. You start with the symbol<<-, then a word that represents the name for this heredoc, then the heredoc contents, then you close the heredoc with that some word on its own line. Another way to do this is to use %Q: ...
To switch to the default Ruby, type: rvm default In order to use the version of Ruby installed on the system (not through RVM), you can specify: rvm use system How To Use Gemsets One common way to distribute code in Ruby is to use a format calledgems. Gems can be in...
IRB gives you access to all of Ruby’s built-in features, as well as any libraries or gems you’ve installed. In addition, you can configure IRB to save your command history and even enable auto-completion of your code. In this tutorial, you’ll use IRB to run some code, inspect its...
Before really starting to use Ruby, you need to have a basic understanding of the command line. Since mostRubyscripts won't have graphical user interfaces, you'll be running them from the command line. Thus, you'll need to know, at the very least, how to navigate the directory structure...
/usr/bin/env ruby str = "10,20,30,Ten, Twenty and Thirty" puts str.split( /, */, 4 ) $ ./3.rb 10 20 30 Ten, Twenty and Thirty Bonus Example! What if you wanted to usesplitto get all the items but the very first one?
Create a new folder and a Ruby file to store the code for this tutorial: $mkdirfaraday_tutorial $cdfaraday_tutorial $touchapp.rb Now install thefaradaydependency. You can either use a gem file or install it manually via the terminal like so: ...