unnecessary_string_interpolations

Unnecessary string interpolation.

This rule is available as of Dart 2.8.

Rule sets: recommended, flutter

This rule has a quick fix available.

DON'T use string interpolation if there's only a string expression in it.

BAD:

String message;
String o = '$message';

GOOD:

String message;
String o = message;

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

linter:
  rules:
    - unnecessary_string_interpolations

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