| Quellcodebibliothek Statistik Leitseite products/sources/formale Sprachen/C/MySQL/doc/snippets/ (MySQL Server Version 8.1-8.4©) Datei vom 12.11.2025 mit Größe 467 B |
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Quelle MatrixBase_eval.cpp Sprache: C |
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Matrix2f M = Matrix2f::Random();
Matrix2f m; m = M; cout << "Here is the matrix m:" << endl << m << endl; cout << "Now we want to copy a column into a row." << endl; cout << "If we do m.col(1) = m.row(0), then m becomes:" << endl; m.col(1) = m.row(0); cout << m << endl << "which is wrong!" << endl; cout << "Now let us instead do m.col(1) = m.row(0).eval(). Then m becomes" << endl; m = M; m.col(1) = m.row(0).eval(); cout << m << endl << "which is right." << endl; ¤ Dauer der Verarbeitung: 0.13 Sekunden (vorverarbeitet) ¤*© Formatika GbR, Deutschland |
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2026-03-28