���ѧۧݧ�ӧ�� �ާ֧ߧ֧էا֧� - ���֧էѧܧ�ڧ��ӧѧ�� - /opt/alt/ruby18/share/ri/1.8/system/Matrix/trace-i.yaml
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--- !ruby/object:RI::MethodDescription aliases: - !ruby/object:RI::AliasName name: tr block_params: comment: - !ruby/struct:SM::Flow::P body: Returns the trace (sum of diagonal elements) of the matrix. - !ruby/struct:SM::Flow::VERB body: " Matrix[[7,6], [3,9]].trace\n => 16\n" full_name: Matrix#trace is_singleton: false name: trace params: () visibility: public
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