ruby Archives - Page 4 of 28

After running the bundle install command, ‘Gemfile.lock‘ is created in the working directory. What do the directives inside that file mean? For example, ...

May 31, 2022
0 Comments

Programming, ruby

IT Nursery

Ruby class instance variable vs. class variable

I read https://stackoverflow.com/questions/826734/when-do-ruby-instance-variables-get-set but I’m of two minds when to use class instance variables. Class variables are shared by all objects of a ...

May 31, 2022
0 Comments

Programming, ruby

IT Nursery

Can I invoke an instance method on a Ruby module without including it?

Background: I have a module which declares a number of instance methods module UsefulThings def get_file; ... def delete_file; ... def format_text(x); ... ...

May 31, 2022
0 Comments

Programming, ruby

IT Nursery

How to add new item to hash

I’m new to Ruby and don’t know how to add new item to already existing hash. For example, first I construct hash: hash ...

May 31, 2022
0 Comments

Programming, ruby

IT Nursery

Best way to pretty print a hash

I have a large hash with nested arrays and hashes. I would like to simply print it out so it ‘readable’ to the ...

May 30, 2022
0 Comments

Programming, ruby-on-rails

IT Nursery

Rails :dependent => :destroy VS :dependent => :delete_all

In rails guides it’s described like this: Objects will be in addition destroyed if they’re associated with :dependent => :destroy, and deleted if ...

May 30, 2022
0 Comments