On Saturday, 30 December 2023 at 18:08:55 UTC, Alexandru Ermicioi
wrote:
On Friday, 29 December 2023 at 23:10:47 UTC, Christian Köstlin
wrote:
Is there a way to implement filterMap (meaning do mapping of a
range, but if something happens during the map, leave this
element out of the resulting range).
Perhaps try map to null cases that exception is thrown then
filter out those, and then unwrap from nullable type:
```d
myRange.map!(e => e.to!T.asNullForException).filter!(e =>
!e.isNull).map!(e => e.get).myOtherAlgorithm()
```
where asNullForException will return empty `Nullable` in case
conversion fails.
asNullForException could be nicely implemented with lazy
parameters i guess.
then its back to the map/filter/map chain that motivated
filter_map in rust ...
thanks for this idea...
kind regards,
Christian
