set->contains

Tests set membership.

Target member

Signature

1set->contains(key)

Tests set membership.

set->contains is called with member syntax on a receiver value. set->contains is useful when moving through groups of values. Prefer collection operations that match the shape of the data rather than converting everything to strings.

Parameters

key: Required value. Supply key positionally unless the signature shows a keyword form.

Examples

Basic call

1set('a')->contains('a')

The example shows the normal call shape. Adapt variable names, validation, and surrounding error handling to the context.