[Feature Request] Allow Blueprints to create Dynamic (non-multicast) Delegates with retval
I would like to be able to expose a DECLARE_DYNAMIC_DELEGATE_RetVal_OneParam which my designers can implement in blueprint.
It's easy enough to create a function which follows the requirements, but it cannot be assigned (cannot be BlueprintAssignable).
I would use a multicast dynamic delegate BUT I need to be able to return a value (and multicast don't get retval options, for obvious reasons).
Not sure if the canonical method is to use a pass-by-reference value as an argument and use that as output, but that seems incredibly hacky.
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