Write different types of scope provided for variables in Scala.

1.	Write different types of scope provided for variables in Scala.
Answer» According to their declarations, Scala VARIABLES are CATEGORIZED into three SCOPES as given below: Fields: Variables of this type can be accessed from any method within a Web OBJECT, or from outside the object, depending on access modifiers used. Depending on the var and val keywords, they can be mutable or immutable. Method Parameters: When a method is invoked, these variables are used to pass values to the method. All method parameters use the val keyword and are strictly immutable. Normally, these are accessed within a method, but a Reference allows ACCESSING them outside the method. Local Variables: These are the variables (mutable or immutable) declared inside a method and accessible only within that method. By returning them from the method, they can be accessed outside of the method.

Answer»

According to their declarations, Scala VARIABLES are CATEGORIZED into three SCOPES as given below:

Fields: Variables of this type can be accessed from any method within a Web OBJECT, or from outside the object, depending on access modifiers used. Depending on the var and val keywords, they can be mutable or immutable.
Method Parameters: When a method is invoked, these variables are used to pass values to the method. All method parameters use the val keyword and are strictly immutable. Normally, these are accessed within a method, but a Reference allows ACCESSING them outside the method.
Local Variables: These are the variables (mutable or immutable) declared inside a method and accessible only within that method. By returning them from the method, they can be accessed outside of the method.

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