isZeroOrNegative property

  1. @useResult
bool get isZeroOrNegative

Returns true if the number is zero or negative.

This is a convenient way to check if a number is not strictly positive.

Example:

5.isZeroOrNegative; // Returns false
0.isZeroOrNegative; // Returns true
(-3).isZeroOrNegative; // Returns true

Returns false for NaN (see isNotZeroOrNegative). Audited: 2026-06-13

Implementation

@useResult
bool get isZeroOrNegative => this <= 0;