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UnexpectedKeywordArgumentType

rascal-0.40.17

Synopsis​

The actual value of a keyword argument is not compatible with its declared type.

Description​

Functions may be declared to have keyword parameters. Each keyword parameters has a type, a name and a default value. This error is generated when the declared type and the actual type of the keyword parameter are not compatible.

Remedies:

  • Change the type of the keyword parameter in the call.
  • Change the type of the keyword parameter in the function declaration.

Examples​

Declare incr function with keyword parameter delta of type int:

rascal>int incr(int x, int delta = 1) = n + delta;
int (int, int delta = ...): function(|prompt:///|(0,43,<1,0>,<1,43>))

Erroneous use of delta with a string value:

rascal>incr(3, delta="more");
|prompt:///|(0,21,<1,0>,<1,21>): Expected int, but got str
Advice: |https://www.rascal-mpl.org/docs/Rascal/Errors/CompileTimeErrors/UnexpectedType|
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