How Do I Import and Use Structs from Different Packages in Go?

Importing Structs from Different Packages in Go

When working with complex applications that utilize multiple packages and files, it's often necessary to reuse data structures defined in separate locations. In Java, it's straightforward to import classes from other packages. However, Go takes a different approach.

Importing a Package

Unlike Java, Go doesn't directly import types or functions. Instead, we import packages. An import declaration allows us to access all exported identifiers within that package. For instance:

After importing the package, we can access its exported identifiers using packagename.Identifiername:

Importing Structs

To import a struct defined in another package and file, simply follow these steps:

1. Declare a variable of the desired type and initialize it with the constructor function.

2. (Optional) Import the package containing the struct if it's not already imported.

Example

Let's say we have a PriorityQueue struct defined in a separate file:

To use this struct in another file, we can import the package and declare a PriorityQueue variable:

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