Macro diesel::prefix_operator
source ยท macro_rules! prefix_operator { ($name:ident, $operator:expr) => { ... }; ($name:ident, $operator:expr, backend: $backend:ty) => { ... }; ($name:ident, $operator:expr, $return_ty:ty) => { ... }; ($name:ident, $operator:expr, $return_ty:ty, backend: $backend:ty) => { ... }; }
Expand description
Useful for libraries adding support for new SQL types. Apps should never need to call this.
Similar to infix_operator!
, but the generated type will only take
a single argument rather than two. The operator SQL will be placed before
the single argument. See infix_operator!
for example usage.