regexp->matchesStart
Tests whether input starts with the pattern.
Target
Signature
1regexp->matchesStart(position::integer= ?)Tests whether input starts with the pattern.
regexp->matchesStart is called with member syntax on a receiver value. regexp->matchesStart uses the regular-expression surface for pattern matching. Keep patterns small, name the intent in nearby code, and test captures separately from replacement strings.
Parameters
position- Optional value of type
integer. Supplypositionpositionally unless the signature shows a keyword form.
Examples
Basic call
1regexp('[a-z]+', '', 'abc')->matchesStartThe example shows the normal call shape. Adapt variable names, validation, and surrounding error handling to the context.