Rust TutorialLesson 17Free preview

Rust Functions

This lesson is part of Rust · All levels

Summary

This lesson reviews the creation of custom functions, the acceptance of parameters, and the return of values in Rust. The function is declared with 'fn' and uses the snake_case convention. The reader will also understand the fundamental difference between a statement and an expression within a function body.

Key points

The function is declared with the keyword 'fn' and the name is in the form of a snake_case
The data type of each mandatory parameter is explicitly stated
The return value type is written after the slender arrow '->'
An expression without semicolon on the last line automatically becomes the return value of the function

Full lesson

Code examples and quizzes

Full lessons, code examples, and quizzes are available to subscribers. 5 questions.