About: Command–query separation

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Principle that every method should either be a command that performs an action, or a query that returns data to the caller, but not both; asking a question should not change the answer

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  • principle that every method should either be a command that performs an action, or a query that returns data to the caller, but not both; asking a question should not change the answer (en)
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  • Command–query separation (en)
  • Command-Query-Separation (de)
  • Command–query separation (es)
  • Séparation commande-requête (fr)
  • CQRS (ru)
  • CQRS (uk)
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