numericRegStr top-level property

String numericRegStr
getter/setter pair

The pattern used to match whole integer numbers (optionally negative).

Pattern breakdown:

  • ^ and $: Anchors to match the entire string.
  • -?: Optional minus sign for negative numbers.
  • [0-9]+: One or more digits.

Pattern: ^-?[0-9]+$

Implementation

String numericRegStr = r'^-?[0-9]+$';