CODEWITHSUNDEEP
scala
lovesh
lovesh

Reputation: 5401

scala-ide error only classes can have declared but undefined members

I have code like this

object API {

    val apiBaseUrl = "https://api.com/2/"

    def getUserDetails(id: String, pass: String): Map[String, String] {
        val apiRequestUrl = apiBaseUrl + "?id=" + id + "&pass=" + pass
    }
}

This gives me error only classes can have declared but undefined members for line starting with def and error only declarations allowed here for line starting with val apiRequestUrl. But when i change the above code to(just put an equals sign after the method signature)

object API {

    val apiBaseUrl = "https://api.com/2/"

    def getUserDetails(id: String, pass: String): Map[String, String] = {
        val apiRequestUrl = apiBaseUrl + "?id=" + id + "&pass=" + pass
    }
}

there is no error. Is there a difference between the above 2 definitions?

Upvotes: 3

Views: 3592

Answers (1)

Toxaris
Toxaris

Reputation: 7266

Is there a difference between the above 2 definitions?

Yes. In Scala, you have to use an equals sign for method bodies that return a value. So your second code fragment is more correct.

The first code fragment is parsed like this, I believe:

object API {
    val apiBaseUrl = "https://api.com/2/"

    def getUserDetails(id: String, pass: String): Map[String, String]

    {
      val apiRequestUrl = apiBaseUrl + "?id=" + id + "&pass=" + pass
    }
}

This explains the error about the missing body for getUserDetails and the error about the block { ... } where a declaration is expected.

Upvotes: 5

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