nice PDF about SIL http://llvm.org/devmtg/2015-10/slides/GroffLattner-SILHighLevelIR.pdf
https://swift.org/blog/utf8-string/ Swift 5 String encoding change
Swift.org
UTF-8 String
Swift 5 switches the preferred encoding of strings from UTF-16 to UTF-8 while preserving efficient Objective-C-interoperability. Because the String type abstracts away these low-level concerns, no source-code changes from developers should be necessary*,…
The last Week many guys asking me about initializers. I founded for this topic a nice post to have a good overview about swift initializers https://basememara.com/swift-class-inheritance/
zamzam.io
Getting Started with Swift Class Inheritance
i found from the good old ray a nice tutorial about unsafe swift https://www.raywenderlich.com/780-unsafe-swift-using-pointers-and-interacting-with-c
kodeco.com
Unsafe Swift: Using Pointers and Interacting With C
In this tutorial, you’ll learn how to use unsafe Swift to directly access memory through a variety of pointer types.