UFUNCTION has the BlueprintPure parameter for tagging functions without side-effects, and C++ has the const keyword for, roughly, the same purpose. But if you try to declare a member function such as: UFUNCTION(BlueprintPure, Category=Foos) FVector GetFoo() const; UHT will complain with the messag…

Edit: as of 2019 you can now mark functions as BlueprintPure=false to get an execution pin onto function call nodes for functions that are marked as const in c++: UFUNCTION(BlueprintCallabe, BlueprintPure=false) int32 Foo() const; Original answer: UFunctions marked as const are always treated as B…

Why are BlueprintPure and const incompatible?

Development Programming & Scripting Blueprint

anonymous_user_d505b203 (anonymous_user_d505b203) July 3, 2014, 8:51pm 3

Yeah, that does seem dubious. Thanks for the clarification!