R.swift
Autocompleted resources like images, fonts & segues in Swift projects
.... If the struct is outdated just build and R.swift will correct any missing/changed/added resources. Runtime validation with R.validate() ff all images used in storyboards and nibs are available, if all named colors used in storyboards and nibs are available, if all view controllers with storyboard identifiers can be loaded, if all custom fonts can be loaded.