Trait magnus::method::ReturnValue
source · pub trait ReturnValue: ReturnValue { }Expand description
Trait marking types that can be returned to Ruby.
Implemented for the following types:
TYield<I>YieldValues<I>YieldSplat<I>Result<T, magnus::Error>Result<Yield<I>, magnus::Error>Result<YieldValues<I>, magnus::Error>Result<YieldSplat<I>, magnus::Error>
where I implements Iterator<Item = T> and T implements IntoValue.
When is Err(magnus::Error) returned to Ruby it will be conveted to and
raised as a Ruby exception.
Yield, YieldValues, and YieldSplat allow returning a Rust
Iterator to be bridged to Ruby method that calls a block with the
elements of that Iterator.
Note: functions without a specified return value will return (). ()
implements IntoValue (converting to nil).