Key

可用

Operator form for extracting values from associations by key

形式

Key[key]

Key[key][assoc]

已驗證的範例<|a -> b, c -> d|>[[Key[a]]] → b {<|a -> x, b -> {y, z}|>, w}[[1, Key[b], 2]] → z

在 Qurak 上執行搜尋參考文件

主題

Associations - Associations and Parts
Function Composition And Operator Forms - Rearranging Functional Forms
New In100 Alphabetical Listing - K
New In100 Core Language And Structure - Associations »
Summary Of New Features In142 - Tabular Objects »
Summary Of New Features In142 - Tabular Objects »

相關

Part Association Tabular Keys KeyExistsQ KeyDrop KeyTake Discard Drop KeySort KeyUnion MaximalBy

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