Will the go compiler compile packages that are never used in main?

php editor Strawberry is happy to answer your question about whether the go compiler will compile packages that have never been used in main. In Go language, the compiler will not compile unused packages. This is because the design concept of the Go language is to be simple and efficient, and will not waste time and resources compiling unused code. Therefore, if some other packages are introduced in the main package, but any functions or variables in them are not used, the compiler will ignore these unused packages, thereby improving compilation speed and program execution efficiency.

Question content

If I have a go module, which contains three packages A, B, C, etc. In main.go and all its imports, only packages A and B have been used. My question is, does the binary generated by go build have any code from package C?

Workaround

The binary build will only contain transitive closures for all symbols referenced from main. This will only include functions and data from the imported package, as well as all methods of the types used. Therefore, if there is a function in a package that is never used, it will not appear in the binary. However, if you use a data type with unused methods, these methods will be in the binary file.

The above is the detailed content of Will the go compiler compile packages that are never used in main?. For more information, please follow other related articles on the PHP Chinese website!