Macros§
- Expands into a single
Some((T1 [, T2...]))instance if all arguments are instances ofSome(<T>), else expands toNone - Expands into a single
Some((T1 [, T2...]))instance if all arguments are instances ofOk(<T>), else expands toNone
Some((T1 [, T2...])) instance if all arguments
are instances of Some(<T>), else expands to NoneSome((T1 [, T2...])) instance if all arguments
are instances of Ok(<T>), else expands to None