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InterviewSolution
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Explain Implicit Parameter. |
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Answer» The implicit parameter, as OPPOSED to the regular parameter, can be passed silently to a method without going through the regular parameter list. The implicit keyword indicates these parameters and any parameters following the implicit keyword are implicit. Essentially, when we don't pass anything to methods or functions, the compiler will LOOK for an implicit value and use that as a parameter. Whenever implicit keywords appear in a function's parameter scope, this marks all parameters as implicit. Each method can simply have a single implicit keyword. Syntax: def func1(implicit a : INT) // a is implicit def func2(implicit a : Int, b : Int) // a and b both are implicit def func3 (a : Int)(implicit b : Int) // only b is implicitExample: object InterviewBit { def main(ARGS: Array[String]) { val value = 20 implicit val addition = 5 def add(implicit to: Int) = value + to val RESULT = add println(result) } }Output: 25 |
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