Xcode Build Setting Transformations
Xcode supports the ability to substitute the value of build settings using the
$(BUILD_SETTING_NAME)or${BUILD_SETTING_NAME}syntax in a number of places including Info.plists, other build setting values, and .xcconfig files. In these substitutions it’s also possible to add operators that transform the value in various ways.[…]
These transformations can be quite useful but don’t appear to be documented, so here’s the list of available operators and what they do[…]
