10:["$","div",null,{"className":"Post_post__BuG2d","style":{"display":"flex","flexDirection":"column","alignItems":"center","gap":"1rem","flex":"1","width":"100%","padding":"1.4rem","boxShadow":"0.2rem 0.2rem 0.4rem var(--shadow-color), inset 0.08rem 0.12rem 0.06rem var(--grow-color), inset -0.08rem -0.12rem 0.06rem var(--shade-color)","borderRadius":"1.4rem"},"children":[["$","div",null,{"className":"$undefined","style":{"display":"flex","gap":"0.4rem","flexWrap":"wrap","width":"100%"},"children":[false,[["$","a","A52F-920D",{"href":"/A52F-920D","style":{"border":"solid 1px var(--post-edge-color)","borderBottom":"none","borderRadius":"0.6rem 0.6rem 0 0","padding":"0.1rem 0.5rem"},"children":"Command-Query Separation"}],["$","a","A52F-CC85",{"href":"/A52F-CC85","style":{"border":"solid 1px var(--post-edge-color)","borderBottom":"none","borderRadius":"0.6rem 0.6rem 0 0","padding":"0.1rem 0.5rem"},"children":"CQS"}],["$","a","A52F-15C6",{"href":"/A52F-15C6","style":{"border":"solid 1px var(--post-edge-color)","borderBottom":"none","borderRadius":"0.6rem 0.6rem 0 0","padding":"0.1rem 0.5rem"},"children":"コマンド・クエリ分離"}]]]}],["$","article",null,{"className":"article","children":[["$","div",null,{"className":"$undefined","style":{"display":"flex","justifyContent":"space-between","flexWrap":"wrap","width":"100%"},"children":[["$","h2",null,{"style":{"margin":"0.6rem"},"children":["$","a",null,{"href":"/A52F-4E2D","children":"あれ"}]}],["$","div",null,{"className":"$undefined","style":{"display":"flex","justifyContent":"end","alignItems":"center","flex":"1","textAlign":"right","whiteSpace":"nowrap"},"children":["$","div",null,{"children":"2025/5/16 9:13:00"}]}]]}],["$","div",null,{"className":"article_body","dangerouslySetInnerHTML":{"__html":"

コマンド・クエリ分離（Command-Query Separation: CQS）の原則は、状態の取得と、状態の変更を分離すべきというプログラミング設計上の原則。\n

クエリとなる各メソッドや関数は、システムの状態を変えることがないこと
コマンドとなるメソッドや関数は、システムの状態を変化させるが、何も結果は返さないこと

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