OptionsPattern

可用

Pattern object that matches any sequence of options in function definitions

形式

OptionsPattern[]

OptionsPattern[f]

OptionsPattern[{opt1 -> val1, opt2 -> val2, …}]

已驗證的範例f[7, {a -> x, b -> y}] /. f[_, OptionsPattern[{}]] :> OptionValue[a] → f[7, {a -> x, b -> y}]

在 Qurak 上執行搜尋參考文件

主題

New In60 Alphabetical Listing - O
New In60 Core Language - New System for Function Options
Options Management - Setting Up Options for Functions
Package Development - Options Management »
Patterns - Composite Patterns
Robustness And Error Handling - Function Argument Checking

相關

OptionValue BlankSequence Repeated FilterRules CheckArguments ArgumentsOptions KeyValuePattern Options SetOptions Alternatives Automatic Condition

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