I am reading the go spec and ran against the following section:
Uniqueness of identifiers
Given a set of identifiers, an identifier is called unique if it is different from every other in the set. Two identifiers are different if they are spelled differently, or if they appear in different packages and are not exported. Otherwise, they are the same.
I don't yet know why introducing this definition is important, but it seems to me that it implies that identically named exported identifiers from different packages are the same. Do I misunderstand something?
Do I misunderstand something?
Yes.
Identifiers are qualified by the package name.
The Go Programming Language Specification
A qualified identifier is an identifier qualified with a package name prefix. Both the package name and the identifier must not be blank.
QualifiedIdent = PackageName "." identifier .A qualified identifier accesses an identifier in a different package, which must be imported. The identifier must be exported and declared in the package block of that package.
math.Sin // denotes the Sin function in package mathThe PackageName is used in qualified identifiers to access exported identifiers of the package within the importing source file. It is declared in the file block. If the PackageName is omitted, it defaults to the identifier specified in the package clause of the imported package. If an explicit period (.) appears instead of a name, all the package's exported identifiers declared in that package's package block will be declared in the importing source file's file block and must be accessed without a qualifier.