In this video, the instructor guides viewers through creating a helper function in Swift, specifically a struct called 'weather util'. This struct includes a static function that processes weather condition strings and returns corresponding emoji icons. The video covers setting up the function, implementing a switch statement to handle different weather conditions, and finalizing the utility with default cases. The tutorial concludes with a brief overview of the next steps, which involve writing a weather widget.

What is the purpose of the weather util struct mentioned in the video?

Describe the process of creating a static function in the weather util.

How does the function ensure that the current condition is processed correctly?

What conditions are covered in the switch statement for determining the weather icon?

What will happen if the current condition does not match any specified cases in the switch statement?