inter

Checks whether a value appears in a collection.

Syntax: <expression> inter <collection>

Category

collection

Related

• intra

Examples

examples/corpus/inter/inter.fab (canonical · keyword)

Checks whether a value appears in a collection.

# inter — collection membership (element in set)
#
# <expr> inter <lista>
#
# GRAMMAR:
#   membershipExpr :← expr 'inter' expr
#
# EXPECTED OUTPUT:
#   none — stdout not pinned for this exemplum.

incipit {
    fixum _ condicio ← "agens"
    fixum _ aetas ← 21

    # Basic inter with textus lista
    si condicio inter ["pendens", "agens", "pausa"] {
        nota "condicio valida"
    }

    # inter with numeric lista
    si aetas inter [18, 21, 65] {
        nota "aetas insignis"
    }

    nota "exempla inter"
}