Implemented Checks

Branches (BranchDuster)

• Warns on useless branches
  

        if 1 == 2
  
          true
  
        else
  
          false
  
        end

• Warns on identical branches
  

        if true
  
          1 + 2
  
        else
  
          1 + 2
  
        end

• Warns on branches with an assignment as a condition
  

        if a = 1
  
          1
  
        else
  
          2
  
        end

Blocks (BlockDuster)

• Warns if yield is called, but there isn’t a check for block_given?

Exceptions (RescueDuster)

• Warns if there is a rescue to a value
  

  do_some_call rescue 42

• Warns if there is a rescue for Object or Exception

Arguments (ArgumentDuster)

• Warns on unused arguments

Variables (LocalVariableDuster)

• Warns on unused local variables

• Warns when shadowing local variables with block arguments
  

  
  
  x = 1
  
  some_block_yielding_method do |x|
  
    x = 4
  
  end

Methods (MethodDuster)

• Warns on empty methods

end