filterToOption
方法(或屬性)屬於 scala.util.Either.RightProjection
類(class),其相關用法說明如下。
用法:
def filterToOption[A1](p: B => Boolean): Option[Either[A1, B]]
如果這是 Left
或給定謂詞 p
不適用正確的值,則返回 None
,否則返回 Right
.
Right(12).right.filterToOption(_ > 10) // Some(Right(12))
Right(7).right.filterToOption(_ > 10) // None
Left(12).right.filterToOption(_ > 10) // None
源碼:
- Either.scala
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注:本文由純淨天空篩選整理自scala-lang.org大神的英文原創作品 RightProjection.filterToOption。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。