rubocop

https://github.com/bbatsov/rubocop

Ruby

A Ruby static code analyzer, based on the community Ruby style guide.

RuboCop::AST::Node#value_used?

Some expressions are evaluated for their value, some for their side
effects, and some for both
If we know that an expression is useful only for its side effects, that
means we can transform it in ways which preserve the side effects, but
change the return value
So, does the return value of this node matter? If we changed it to
`(...; nil)`, might that affect anything?

rubocop:disable Metrics/MethodLength

Source | Google | Stack overflow

Edit

git clone [email protected]:bbatsov/rubocop.git

cd rubocop

open lib/rubocop/ast/node.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-RuboCop--AST--Node-value_used--for-pr

# Commit to git

git add lib/rubocop/ast/node.rbgit commit -m "better docs for RuboCop::AST::Node#value_used?"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-RuboCop--AST--Node-value_used--for-pr

hub pull-request

# Celebrate!