UEC++ From Basics to Advanced | M06-002: Initializing and Filling TSet

This video demonstrates TSet creation and element insertion. We declare a TSet with FString elements and note that elements require operator== and GetTypeHash -- the same requirements as TMap keys. No memory is allocated until the first element is added. The Add method inserts elements and automatically replaces duplicates, ensuring uniqueness. We compare Add versus Emplace -- Emplace constructs the element directly in-place without a temporary copy. Append merges one set into another, and we examine whether duplicates are overwritten during the merge. The video also shows how to expose a TSet property to Blueprints using BlueprintReadWrite, and notes that struct elements may require additional operator overloading for proper set semantics. Live debugging confirms element counts and replacement behavior.