crowbar/crowbar-hadoop

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chef/cookbooks/zookeeper/recipes/client.rb

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Useless assignment to variable - env_filter. (https://github.com/bbatsov/ruby-style-guide#underscore-unused-vars)
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env_filter = " AND environment:#{node[:zookeeper][:config][:environment]}"

This cop checks for every useless assignment to local variable in every scope. The basic idea for this cop was from the warning of ruby -cw:

assigned but unused variable - foo

Currently this cop has advanced logic that detects unreferenced reassignments and properly handles varied cases such as branch, loop, rescue, ensure, etc.

Example:

# bad

def some_method
  some_var = 1
  do_something
end

Example:

# good

def some_method
  some_var = 1
  do_something(some_var)
end

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