The slices package
The slices package has been part of the standard Go library since Go 1.21 and offers functions for slices of any data type. Before continuing our discussion of the slices package, let us talk about the shallow copy and deep copy functionality, including their differences.
Shallow and deep copies
A shallow copy creates a new variable and then it assigns to it all the values that are found in the original version of the variable. If we are talking about a map, then this process assigns all keys and values using ordinary assignment.
A deep copy first creates a new variable and then, it inserts all the values that are found in the original variable. However, each value must be copied recursively—this might not be an issue if we are talking about a string, but it might become an issue if we are talking about a structure, a reference to a structure, or a pointer. Among other things, this process might create never-ending circles. The key word here is...
