• TEnumRange
  
  • see \Runtime\Core\Public\Misc\EnumRange.h.
  • for (const EMyEnum Val : TEnumRange<EMyEnum>())
  • Required to use ENUM_RANGE_BY_COUNT, ENUM_RANGE_BY_FIRST_AND_LAST, or ENUM_RANGE_BY_VALUES
• BlueprintAuthorityOnly, tbh some of these TIL.
  • UFUNCTION(BlueprintCallable, BlueprintAuthorityOnly, Category = "MyCategory")
• EditCondition, VisibleCondition, and EditConditionHides
  • UPROPERTY(..., meta = (EditCondition="bToggled")) or UPROPERTY(..., meta = (EditCondition="MyEnum == MyEnum::None")) etc
• FSimpleMulticastDelegate and FSimpleDelegate
  • These are delegates that you can bind only in C++ and don't support any args. If using these you don't have to do the macro to define them as they're already defined so it helps clean up your classes.
• TArrayView
  • You can do some cool stuff with this class, such as splitting an array.
• FDateRange, FDoubleRange, FFloatRange, FInt8Range, FInt16Range, FInt32Range, FInt64Range -
  • see \Runtime\Core\Public\Math\Range.h
• APlayerState::CopyProperties and APlayerState::OverrideWith
• FWorldDelegates 
• UE_NONCOPYABLE macro
• FFormatNamedArguments
• UE_ARRAY_COUNT
• ThisClass - used when well... using delegates etc &ThisClass::MethodName
• UEnum class - has some really useful methods
• PawnLeavingGame - override this in your PlayerController class and it will prevent your pawn from being destroyed on disconnect
• FDebug::DumpStackTraceToLog to dump the callstack to the log

until next time