Let’s talk about the non-addressability of golang

Recently, more and more developers have begun to use Golang for development. As a low-level language, Golang supports concurrency and network programming well. However, when you start to learn more about Golang, you may encounter some problems. One of the problems is Golang's unaddressability.

In Golang, some variables are not addressable. These variables include constants and expressions, as well as some internal data structures and hardware registers. These variables have no memory addresses, so their values ​​cannot be accessed through pointers.

This may confuse some developers because in other programming languages, these variables are addressable. However, in Golang, these variables are designed to be unaddressable for a few reasons.

First of all, non-addressable variables can avoid some underlying problems. In most computer architectures, some data cannot be directly addressed. For example, hardware registers store some special data, but they are not in memory and therefore not addressable. If you allow access to this data through pointers, there are some underlying problems.

Secondly, non-addressable variables can improve program performance. In Golang, a large number of operations are performed by the compiler or virtual machine. The compiler can make some optimizations by knowing that a variable is not addressable. For example, the compiler can inline constants directly into the code rather than defining them as global variables.

Finally, non-addressable variables can improve program security. In Golang, accessing an unaddressable variable generates a compilation error. This avoids some potential memory safety issues such as wild pointers and buffer overflows.

While unaddressability in Golang may confuse some developers, it does have its place. When writing performant and secure code, developers can consider designing certain variables to be non-addressable.

To sum up, Golang’s non-addressability may seem a bit strange, but it does have its uses. When writing Golang code, developers should be aware of this and take care to design certain variables as non-addressable to improve program performance and security.

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