prefer_double_quotes
Unnecessary use of single quotes.
Description
#The analyzer produces this diagnostic when a string literal uses single quotes ('
) when it could use double quotes ("
) without needing extra escapes and without hurting readability.
Example
#The following code produces this diagnostic because the string literal uses single quotes but doesn't need to:
dart
void f(String name) {
print('Hello $name');
}
Common fixes
#Use double quotes in place of single quotes:
dart
void f(String name) {
print("Hello $name");
}
Unless stated otherwise, the documentation on this site reflects Dart 3.7.3. Page last updated on 2025-05-08. View source or report an issue.