regexp->replaceFirst

Replaces the first match.

Target member

Signature

1regexp->replaceFirst(...)

Replaces the first match.

regexp->replaceFirst is called with member syntax on a receiver value. regexp->replaceFirst 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

...: Additional values may be supplied after the earlier arguments.

Examples

Basic call

1regexp('[0-9]+', '', 'a1b2')->replaceFirst('#')

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