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UnsupportedSubscriptArity

rascal-0.40.17

Synopsis​

Wrong number of subscripts is used.

Description​

Subscription is available for values of various types including: string, node, list, map, tuple and relation. This error is generated when subscription is applied to a value that does support subscription but not the number of indices that are used.

Remedies: correct the number of indices used in the subscription.

Examples​

rascal>[1,2,3][2,1];
|prompt:///|(10,1,<1,10>,<1,11>): Unsupported subscript arity of 2 on type list[int]
Advice: |https://www.rascal-mpl.org/docs/Rascal/Errors/CompileTimeErrors/UnsupportedSubscriptArity|
ok
rascal>("a":1, "b":2, "c":3)["c", "d"];
|prompt:///|(27,3,<1,27>,<1,30>): Unsupported subscript arity of 2 on type map[str, int]
Advice: |https://www.rascal-mpl.org/docs/Rascal/Errors/CompileTimeErrors/UnsupportedSubscriptArity|
ok
rascal><1, 2, 3>[5,6];
|prompt:///|(12,1,<1,12>,<1,13>): Unsupported subscript arity of 2 on type tuple[int,int,int]
Advice: |https://www.rascal-mpl.org/docs/Rascal/Errors/CompileTimeErrors/UnsupportedSubscriptArity|
ok