class RuboCop::Cop::Performance::OpenStruct
This cop checks for `OpenStruct.new` calls. Instantiation of an `OpenStruct` invalidates Ruby global method cache as it causes dynamic method definition during program runtime. This could have an effect on performance, especially in case of single-threaded applications with multiple `OpenStruct` instantiations.
@example
# bad class MyClass def my_method OpenStruct.new(my_key1: 'my_value1', my_key2: 'my_value2') end end # good class MyClass MyStruct = Struct.new(:my_key1, :my_key2) def my_method MyStruct.new('my_value1', 'my_value2') end end
Constants
- MSG
Public Instance Methods
on_send(node)
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# File lib/rubocop/cop/performance/open_struct.rb, line 38 def on_send(node) open_struct(node) do add_offense(node, location: :selector) end end