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prefer_expression_function_bodies

Unnecessary use of a block function body.

Description

#

The analyzer produces this diagnostic when the body of a function consists of a single return statement with an expression.

Example

#

The following code produces this diagnostic because the body of f has a single return statement:

dart
int f() {
  return 0;
}

Common fixes

#

If the body is complete, then replace the body with an expression body:

dart
int f() => 0;

If the body isn't complete, then add the missing statements.