[PDF] blank identifier golang

The _ (underscore) is known as the blank identifier in Go. We can use the blank identifier to declare and use the unused variables. The unused variables are the variables that are only defined once in the program and not used. These variables affect the readability of the program and make it unreadable.
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  • What is a blank identifier?

    The blank identifier _ is an anonymous placeholder.
    It may be used like any other identifier in a declaration, but it does not introduce a binding.

  • What are blank imports in Golang?

    We can import the package and not using by placing a blank.
    This way your program runs successfully and you can remove the blank whenever you wish to use that package.
    Refer code for syntax and example code for a better understanding of the blank import.
    Example: import _ "math" Go.

  • How to check type data in Golang?

    In Golang, we can find the type of a variable using:

    1The TypeOf function within the reflect package.2The ValueOf.
    Kind function within the reflect package.    3The %T and Printf functions within the fmt package.

  • How to check type data in Golang?

    Here are some good practices that will help write maintainable Go code.

    1Keep main small. “Tour of Go” reads: 2Use meaningful names. 3Code grouping. 4Write meaningful comments. 5Don't repeat. 6Linting and style guidelines. 7Avoid deep nesting. 8Write better functions.

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