noop_primitive_operations

Noop primitive operations.

Some operations on primitive types are idempotent and can be removed.

BAD:

doubleValue.toDouble();

intValue.toInt();
intValue.round();
intValue.ceil();
intValue.floor();
intValue.truncate();

string.toString();
string = 'hello\n'
    ''
    'world';

'string with ${x.toString()}';

Note that the empty string literals at the beginning or end of a string are allowed, as they are typically used to format the string literal across multiple lines:

// OK
string = ''
    'hello\n'
    'world\n';

// OK
string = 'hello\n'
    'world\n'
    '';

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

linter:
  rules:
    - noop_primitive_operations

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

linter:
  rules:
    noop_primitive_operations: true

除非另有说明，文档之所提及适用于 Dart 3.7.2 版本，本页面最后更新时间: 2025-03-07。 查看文档源码 或者 报告页面问题。