sizeHint method
If possible give a hint of expected size of the encoding.
This method is used inside default implementation of encode
to avoid re-allocations.
Implementation
@override
int sizeHint(Result<R, E> value) {
if (value.isOk) {
return 1 + okCodec.sizeHint(value.okValue as R);
}
return 1 + errCodec.sizeHint(value.errValue as E);
}