Data types and the unsafe package
The unsafe package in Go provides facilities for performing operations that break the type safety guarantees of Go. It is a powerful but potentially dangerous package, and its use is discouraged in most Go code. Therefore, the unsafe package is intended for specific situations where low-level programming is necessary, such as interfacing with non-Go code, dealing with memory layout, or implementing certain advanced features.
In this section, we are going to discuss four functions of the unsafe package that are related to strings and slices. You might not have to use any of them on a regular basis, but it is good to know about them because they provide speed when dealing with large strings or slices that take lots of memory because they deal with memory addresses directly, which might be very dangerous if you do not know what you are doing. The four functions that we are going to discuss are unsafe.StringData(), unsafe.String(), unsafe.Slice()...
