class Concurrent::Promises::Future
def rejected_resolution(raise_on_reassign, state)
def rejected_resolution(raise_on_reassign, state) if raise_on_reassign if internal_state == RESERVED raise Concurrent::MultipleAssignmentError.new( "Future can be resolved only once. It is already reserved.") else raise Concurrent::MultipleAssignmentError.new( "Future can be resolved only once. It's #{result}, trying to set #{state.result}.", current_result: result, new_result: state.result) end end return false end