Name Rascal/Libraries/Prelude/Map/domainR

Synopsis Map restricted to certain keys.

Function map[&K, &V] domainR(map[&K, &V] M, set[&K] S)

Usage import Map;

Description Return the map M restricted to pairs with key in S.

Examples

rascal>import Map;
ok
rascal>domainR(("apple": 1, "pear": 2, "orange": 3), {"apple", "pear"});
map[str, int]: ("pear":2,"apple":1)

[Edit] | [New Subconcept] | [Recompile Course] | [Warnings]