3 ms·

i think this = #[]; is for rust analyser, not sure , can anyone tell me what is this #[];

• steveklabnik 5y ago
  It is called an "attribute" and it is part of the language itself. There is also #![]. The difference is what they apply to, #[] applies to the following thing, #![] applies to the parent thing. You'll see #![] to enable nightly features in Rust, for example, and #[] for things like custom derives.