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What Is Either In Scala? What Are Left And Right In Scala? Explain Either/left/right Design Pattern In Scala? |
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Answer» In Scala, Either is an abstract CLASS. It is used to REPRESENT one value of two possible types. It takes two type parameters: Either[A,B]. It EXACTLY have two SUBTYPES: Left and Right. If Either[A,B] represents an INSTANCE A that means it is Left. If it represents an instance B that means it is Right. This is known as Either/Left/Right Design Pattern in Scala. In Scala, Either is an abstract class. It is used to represent one value of two possible types. It takes two type parameters: Either[A,B]. It exactly have two subtypes: Left and Right. If Either[A,B] represents an instance A that means it is Left. If it represents an instance B that means it is Right. This is known as Either/Left/Right Design Pattern in Scala. |
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