# Header

What you will learn?

1. **[Refactor](https://github.com/inancgumus/learngo/tree/master/28-error-handling/exercises/01-refactor)**

    Refactor the headerOf function with a map + defer + and a named param.

2. **[text](https://github.com/inancgumus/learngo/tree/master/)**

    text