avoid_print

Avoid print calls in production code.

This rule is available as of Dart 2.5.

Rule sets: flutter

This rule has a quick fix available.

DO avoid print calls in production code.

For production code, consider using a logging framework. If you are using Flutter, you can use debugPrint or surround print calls with a check for kDebugMode

BAD:

void f(int x) {
  print('debug: $x');
  ...
}

GOOD:

void f(int x) {
  debugPrint('debug: $x');
  ...
}

GOOD:

void f(int x) {
  log('log: $x');
  ...
}

GOOD:

void f(int x) {
  if (kDebugMode) {
      print('debug: $x');
  }
  ...
}

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

linter:
  rules:
    - avoid_print

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.