It is possible to derive an iterator for a newtype in Rust. For example, the macros provided by the newtype_derive crate can be used to derive "obvious" implementations of traits such as Add, Neg, Index, Deref, From, etc..
This allows for compile time guarantees that the right type of value is supplied to a program, such as an age verification function that checks age in years.
. That is, given a tuple struct with exactly one field ( e.g. struct Buckets(i32) ), these macros will derive "obvious" implementations of traits such as Add , Neg , Index , Deref , From , etc.
newtype_derive - Rust
The newtype idiom gives compile time guarantees that the right type of value is supplied to a program.
For example, an age verification function that checks age in years, must be given a value of type Years .
Uncomment the last print statement to observe that the type supplied must be Years .
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