demand
Ensures that the nullable receiver is not null. Converts the receiver to a successful Result if not null or to a failure containing a ValueIsNull exception if null.
Example:
// When the receiver is not null
val foo: String? = "bar"
foo.demand("foo") // Result.Success("foo")
// When the receiver is null
val foo: String? = null
foo.demand("foo") // Result.Failure(ValueIsNull("Value foo is null"))Return
a Result containing the receiver value if not null, or a failure with a ValueIsNull exception if the receiver is null.
Parameters
the name of the value being validated. Used to generate a meaningful error message if the value is null.
Ensures an Option is Some, wrapping the inner value in a Result. If the Option is empty, the operation will fail, associating the failure with the provided label name.
Return
A Result containing the value inside the Option if present, or a failure associated with the given value if empty.
Parameters
The name of the value to associate with the failure if the Option is empty.