use_string_buffers

Use string buffers to compose strings.

DO use string buffers to compose strings.

In most cases, using a string buffer is preferred for composing strings due to its improved performance.

BAD:

String foo() {  final buffer = '';  for (int i = 0; i < 10; i++) {  buffer += 'a'; // LINT  }  return buffer; } 

GOOD:

String foo() {  final buffer = StringBuffer();  for (int i = 0; i < 10; i++) {  buffer.write('a');  }  return buffer.toString(); } 

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

linter:  rules:  - use_string_buffers 

If you're instead using the YAML map syntax to configure linter rules, add use_string_buffers: true under linter > rules:

linter:  rules:  use_string_buffers: true