Rascal/Expressions/Values/Map/Intersection

Name Rascal/Expressions/Values/Map/Intersection

Synopsis Intersection of two maps.

Syntax Exp₁ & Exp₂

Types

`Exp₁`	`Exp₂`	`Exp₁ & Exp₂`
`map[T₁₁, T12]`	`set[T₂]`	`set[lub(T₁,T₂)]`

Description Returns the intersection of the two map values of Exp₁ and Exp₂, i.e., a map that contains the key/value pairs that occur in both maps.

Examples

rascal>("apple": 1, "pear": 2) & ("banana": 3, "apple": 1);
map[str, int]: ("apple":1)
rascal>("apple": 1, "pear": 2) & ("banana": 3, "apple": 4);
map[str, int]: ()

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