EN_raw_non_const_argument_for_const_parameter

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                  non_const_argument_for_const_parameter

            non_const_argument_for_const_parameter

Details about the 'non_const_argument_for_const_parameter' diagnostic produced by the Dart analyzer.

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Argument '{0}' must be a constant.

              Description

              #

              The analyzer produces this diagnostic when a parameter is
              annotated with the `mustBeConst`
               annotation and
              the corresponding argument is not a constant expression.

              Example

              #

              The following code produces this diagnostic on the invocation of
              the function `f` because the value of the argument passed to the
              function `g` isn't a constant:

                dart

import 'package:meta/meta.dart' show mustBeConst;

int f(int value) => g(value);

int g(@mustBeConst int value) => value + 1;

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              Common fixes

              #

              If a suitable constant is available to use, then replace the argument
              with a constant:

                dart

import 'package:meta/meta.dart' show mustBeConst;

const v = 3;

int f() => g(v);

int g(@mustBeConst int value) => value + 1;

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                Unless stated otherwise, the documentation on this site reflects Dart 3.13.3. Report an issue.