It came up many times during the study, but since the definition was not properly defined by myself, I created it again with the meaning of review. If you have any mistakes or supplements, we apologize for the inconvenience, but we would appreciate it if you could contact us.
--A tool that can manage Gem relationships and ** install ** together the required gems and versions (Gems have multiple dependencies and you need to install all of them, but use bundler If you do, you can download all at once). --Gems installed by bundler are stored in a file called ** Gemfile.lock **.
--A library or extension in Ruby. I personally use One Tab a lot.
--The file that contains the gem you want to install. It also contains information (name and version) of the Gem installed by bundler.
Samurai Blog https://www.sejuku.net/blog/19426