#extractor-objects #scala
// The injection method (optional)
def apply(user: String, domain: String) = { user +"@"+ domain }
// The extraction method (mandatory)
def unapply(str: String): Option[(String, String)] = {
val parts = str split "@"
if (parts.length == 2) { Some(parts(0), parts(1)) }
else{ None }
}
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Scala Extractorsly method : " + apply("Zara", "gmail.com"));
println ("Unapply method : " + unapply("Zara@gmail.com"));
println ("Unapply method : " + unapply("Zara Ali"));
}
<span>// The injection method (optional)
def apply(user: String, domain: String) = {
user +"@"+ domain
}
// The extraction method (mandatory)
def unapply(str: String): Option[(String, String)] = {
val parts = str split "@"
if (parts.length == 2){
Some(parts(0), parts(1))
}else{
None
}
}
}
This object defines both apply and unapply methods. The apply method has the same meaning as always: it turns Test into an object that can be applied to arguments in parentheses in th Summary
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