Macro lignin::if_not_callbacks [−][src]
macro_rules! if_not_callbacks { {$($tt:tt)*} => { ... }; }
Expand description
Canonically located at callback_registry::if_not_callbacks
.
Identity iff the "callbacks"
feature is not enabled, otherwise empty output.
In most cases, prefer using the ENABLED
constant to always check all of your code.