Dear ImGui users: added 'io.ConfigDebugHighlightIdConflicts' debug tool to highlight conflicting identifiers. Small, much requested tool. Now happily came up with an elegant and optimal implementation for it. Enabled it by default to battle test it! github.com/ocornut/imgu...

I've been meaning to add this for years but needed to: (1) find an optimal impl. This does zero search, adds two int32 == compare on visible/non-clipped items, pulling values from hot memory.