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In Go, which of the following statement is true about the visibility of identifiers (such as variables, constants, and functions) within and between packages?
- All identifiers are always visible within a package, but only some identifiers are visible from other packages
- Only exported identifiers are visible within and from other packages
- Only exported identifiers are visible within a package, but all identifiers are always visible from other packages
- All identifiers are always visible within a package, but only exported identifiers are visible from other packages
Reveal
All identifiers are always visible within a package, but only exported identifiers are visible from other packages
- Whiilst "some" identifiers are visible for other packages, this statement is not clear about what "some" means. It has to be "exported".
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In this question, we are writing a Go package that provides a function for generating random strings. Also, we want to document the function so that users of our package can understand how to use it.
A Go file is located at
/root/code/string
directory.Complete the above Go code, so the Output for go doc GenerateRandomString is as follows: -
❯ go doc GenerateRandomString func GenerateRandomString(length int) string GenerateRandomString generates a random string of the given length. The string consists of uppercase and lowercase letters and digits. Example: result := GenerateRandomString(8) fmt.Println(result) // "z5F7G9J3"
Reveal
package main // // ... implementation goes here ... // // GenerateRandomString generates a random string of the given length. // The string consists of uppercase and lowercase letters and digits. // result := GenerateRandomString(8) // fmt.Println(result) // "z5F7G9J3" func GenerateRandomString(length int) string { }
- Know that to get the example, you must insert
TAB
between//
and the example text.
- Know that to get the example, you must insert
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In Go, which of the following is NOT a valid version number for a module?
- 1.0.0
- 1
- 1.0
- v1.0.0
Reveal
1
- In Go, a module version number consists of at least two non-negative integers separated by a dot.
- The first integer is the major version, the second integer is the minor version, and additional integers (if present) are the patch version.
- Valid version numbers include
v1.0.0
,1.0.0
,1.0
, and1.0.1
, but1
is not a valid version number because it does not have at least two integers separated by a dot.
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Which of the following statements is NOT true about creating a module in Go?
- You can use the "go mod download" command to download all of the dependencies for a module
- You can use the "go mod edit" command to change the dependencies of a module
- Modules are automatically created whenever you import a package in your Go code
- To create a new module, you must use the go mod init command and specify the module's path
- Modules are a new feature in Go that allow developers to manage their dependencies more easily
Reveal
Modules are automatically created whenever you import a package in your Go code
- You don't have a module until you've run
go mod init