Lint-UnderscorePrefixedVariableName.md

Pattern: _ for used variable

Issue: -

Description

This rule checks for underscore-prefixed variables that are actually used.

Examples

# bad

[1, 2, 3].each do |_num|
  do_something(_num)
end

# good

[1, 2, 3].each do |num|
  do_something(num)
end

# good

[1, 2, 3].each do |_num|
  do_something # not using `_num`
end

Further Reading

• RuboCop - Lint/UnderscorePrefixedVariableName