use_is_even_rather_than_modulo

Prefer intValue.isOdd/isEven instead of checking the result of % 2.

This rule is available as of Dart 2.9.

PREFER the use of intValue.isOdd/isEven to check for evenness.

BAD:

bool isEven = 1 % 2 == 0;
bool isOdd = 13 % 2 == 1;

GOOD:

bool isEven = 1.isEven;
bool isOdd = 13.isOdd;

To enable the use_is_even_rather_than_modulo rule, add use_is_even_rather_than_modulo under linter > rules in your analysis_options.yaml file:

linter:
  rules:
    - use_is_even_rather_than_modulo

Unless stated otherwise, the documentation on this site reflects Dart 3.6.0. Page last updated on 2024-07-03. View source or report an issue.