GO Packages and Modules

Question 1

What file defines a Go module and its dependencies?

Accepted Answer

go.mod

Answer

package.json

Answer

go.sum

Answer

Makefile

Question 2

What command adds a missing dependency to `go.mod`?

Accepted Answer

go get

Answer

go install

Answer

go add

Answer

go fetch

Question 3

What does `go mod tidy` do?

Accepted Answer

Removes unused dependencies and adds missing ones in go.mod

Answer

Formats go.mod file

Answer

Updates all dependencies to latest

Answer

Deletes the module cache

Question 4

What naming convention determines if a Go identifier is exported from a package?

Accepted Answer

Start the name with an uppercase letter

Answer

Prefix with `pub`

Answer

Prefix with `export`

Answer

Add `//export` comment above it

Question 5

What is the `internal` package convention in Go?

Accepted Answer

Code in an `internal` directory can only be imported by code in its parent tree

Answer

Packages named `internal` are compiled differently

Answer

Internal packages are hidden from the module system

Answer

Internal packages skip type checking

Question 6

What does the `_` blank import (`import _ "pkg"`) do in Go?

Accepted Answer

Runs the package's `init` functions without making its symbols available

Answer

Imports only unexported symbols

Answer

Prevents the package from being used

Answer

Marks the package as deprecated