Re:Rust Weird Expressions
by steveklabnik on Friday May 14, 2021 @02:02PM
(#27157547)
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.
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.