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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                模式匹配是根據一個匹配的指定值進行分支處理,盡可能深的模式。在Haxe中,所有的模式匹配通過 switch表達式(第5.17節)處理,在其中通過個體的case語句表示模式。這里我們將探索不同的模式的語法,使用這個數據結構作為運行例子: > Pattern matching is the process of branching depending on a value matching given, possibly deep patterns. In Haxe, all pattern matching is done within a switch expression (5.17) where the individual case expressions represent the patterns. Here we will explore the syntax for different patterns using this data structure as running example: ~~~ enum Tree<T> { Leaf(v:T); Node(l:Tree<T>, r:Tree<T>); } ~~~ 一些模式匹配器基礎包括: > Some pattern matcher basics include: * 模式總是從頭至尾匹配 * 最上面的匹配了輸入的值的模式,它的表達式將被執行 * 一個 \_ 匹配任何,所以 case _: 是等同于 default: 的 > * Patterns will always be matched from top to bottom. > * The topmost pattern that matches the input value has its expression executed. > * A _ pattern matches anything, so case _: is equal to default:
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