The problem occurred in a file titled redis.rb and having the following content: require ‘redis’ $redis = Redis.new(…) The gem was installed and still I was getting the same error. On search, I found this link. Solution Rename the file from redis.rb to redis-db.rb. It worked. Written with StackEdit.
Solution If you workflow has Docker container, please stop the containers. Check with $docker ps and verify that all containers are in exited state. Set the right Ruby version. Find out from the project repo Makefile, build scripts. Update the bundler to same version as of Ruby. Reference https://bugs.ruby-lang.org/issues/11946 https://github.com/rbenv/rbenv https://philna.sh/blog/2017/03/22/always-install-bundler-alongside-ruby-with-rbenv/
Solution Use pyenv and rbenv How It Works? These tools create a shim (or think of softlinks) for a version of the software. You can choose to run a version globally or locally in a shell. Switch to a version anytime you like. Run Python 3 & Python 2 without much trouble. Or no need … More A Clean Way to Run Multiple Versions of Python & Ruby
Module level global variables are useful for encapsulation and isolation. module Site @@name = “a_global” def self.setName(value) @@name = value end def self.name @@name end end References https://stackoverflow.com/questions/5690458/create-module-variables-in-ruby
The simplest example of read_attr, write_attr in a class. class Person attr_reader :name, :age attr_writer :name, :age # creates the setter methods def initialize(name) [@name](http://twitter.com/name) = name end endmike = Person.new(‘Mike’) mike.age = 20 # calling setter method mike.age # calling getter method, returns 20 Reference The example is verbatim from an easy to follow … More Ruby Class Members: Getter & Setter
Ruby is an interpreted language. It is dynamically typed and uses a new memory for a variable. A variable has a name and a value. Symbols are an optimized variable that holds single instance of memory. It is good for variables that assume the same values across the program such as hash table keys. h … More Understanding Ruby Symbols
The clearest example was in a StackOverflow post You can pass a map of params key & values and get expected URL. Another example Output Reference https://apidock.com/ruby/URI/encode_www_form/class