macro_rules! ensure_ne { ($left:expr, $right:expr, $kind:expr, $msg:literal $(,)?) => { ... }; ($left:expr, $right:expr, $kind:expr, dicate $msg:expr $(,)?) => { ... }; ($left:expr, $right:expr, $kind:expr, dicate $msg:expr, $($arg:tt)*) => { ... }; }
Expand description
Return early with an error if two expressions are equal to each other.