Category: Programming

Rust 101 – 8: Writing methods using impl blocks

This time we discuss how to add methods to structs and enums, using impl blocks. Methods work similarly to other languages, but it might be a surprise that they can be defined inside separate blocks, and in fact they can be defined in multiple different blocks, which can be useful, and can also be a potential cause of confusion!

Series: 1: Intro, 2: Language basics, 3: Memory and ownership, 4: Exercises A1, 5: References, 6: Structs and Enums, 7: Panic and Result, 8: Methods, 9: Vec and Box, 10: Strings, 11: Exercises A2, 12: Traits, 13: Type params, 14: std Traits, 15: Lifetimes, 16: Exercises A3pt1, 17: Exercises A3pt2, 18: Dependencies, 19: API design, 20: Tests, 21: Exercise B1, 22: Exercise B2, 23: Exercise B3

Links:

The course materials for this series are developed by tweede golf. You can find more information at github.com/tweedegolf/101-rs and you can sponsor the work at github.com/sponsors/tweedegolf. They are released under the Creative Commons Attribution Share Alike 4.0 International license.

This series of videos is copyright 2024 Andy Balaam and the tweede golf contributors and is released under the Creative Commons Attribution Share Alike 4.0 International license.

Rust 101 – 7: Error handling with panic and Result

We learnt about enums and generics last time, which means we’re ready to talk about Result, which is a really nice way of handling errors in Rust, that allows you to be very explicit about what went wrong, but also with a very compact syntax using the ? operator. Before that we discuss `panic!`, which essentially stops your program with an error message, and is useful for handling errors that should never happen.

Series: 1: Intro, 2: Language basics, 3: Memory and ownership, 4: Exercises A1, 5: References, 6: Structs and Enums, 7: Panic and Result, 8: Methods, 9: Vec and Box, 10: Strings, 11: Exercises A2, 12: Traits, 13: Type params, 14: std Traits, 15: Lifetimes, 16: Exercises A3pt1, 17: Exercises A3pt2, 18: Dependencies, 19: API design, 20: Tests, 21: Exercise B1, 22: Exercise B2, 23: Exercise B3

Links:

The course materials for this series are developed by tweede golf. You can find more information at github.com/tweedegolf/101-rs and you can sponsor the work at github.com/sponsors/tweedegolf. They are released under the Creative Commons Attribution Share Alike 4.0 International license.

This series of videos is copyright 2023 Andy Balaam and the tweede golf contributors and is released under the Creative Commons Attribution Share Alike 4.0 International license.

Rust 101 – 6: Structs and Enums

Continuing our review of the things you need in Rust to write programs – grouping together data using structs, and allowing multiple possibilities with enums. We look at how to decide which thing you’ve got with the match keyword, and review a very popular enum called Option, which lets you say either you’ve got something, or you’ve got nothing.

Series: 1: Intro, 2: Language basics, 3: Memory and ownership, 4: Exercises A1, 5: References, 6: Structs and Enums, 7: Panic and Result, 8: Methods, 9: Vec and Box, 10: Strings, 11: Exercises A2, 12: Traits, 13: Type params, 14: std Traits, 15: Lifetimes, 16: Exercises A3pt1, 17: Exercises A3pt2, 18: Dependencies, 19: API design, 20: Tests, 21: Exercise B1, 22: Exercise B2, 23: Exercise B3

Links:

The course materials for this series are developed by tweede golf. You can find more information at github.com/tweedegolf/101-rs and you can sponsor the work at github.com/sponsors/tweedegolf. They are released under the Creative Commons Attribution Share Alike 4.0 International license.

This series of videos is copyright 2023 Andy Balaam and the tweede golf contributors and is released under the Creative Commons Attribution Share Alike 4.0 International license.

Rust 101 – 3: Memory and ownership

Continuing on Rust programming basics by looking at ownership and memory management, including the stack and the heap: what they are, how they differ, and why you need to care.

For more help on ownership and the stack and the heap, try Chapter 4 of the Rust book.

Series: 1: Intro, 2: Language basics, 3: Memory and ownership, 4: Exercises A1, 5: References, 6: Structs and Enums, 7: Panic and Result, 8: Methods, 9: Vec and Box, 10: Strings, 11: Exercises A2, 12: Traits, 13: Type params, 14: std Traits, 15: Lifetimes, 16: Exercises A3pt1, 17: Exercises A3pt2, 18: Dependencies, 19: API design, 20: Tests, 21: Exercise B1, 22: Exercise B2, 23: Exercise B3

Links:

The course materials for this series are developed by tweede golf. You can find more information at github.com/tweedegolf/101-rs and you can sponsor the work at github.com/sponsors/tweedegolf. They are released under the Creative Commons Attribution Share Alike 4.0 International license.

This series of videos is copyright 2023 Andy Balaam and the tweede golf contributors and is released under the Creative Commons Attribution Share Alike 4.0 International license.

Rust 101 – 2: Language basics

An introduction to the Rust language basics.

Series: 1: Intro, 2: Language basics, 3: Memory and ownership, 4: Exercises A1, 5: References, 6: Structs and Enums, 7: Panic and Result, 8: Methods, 9: Vec and Box, 10: Strings, 11: Exercises A2, 12: Traits, 13: Type params, 14: std Traits, 15: Lifetimes, 16: Exercises A3pt1, 17: Exercises A3pt2, 18: Dependencies, 19: API design, 20: Tests, 21: Exercise B1, 22: Exercise B2, 23: Exercise B3

  • What Rust is and why you might want to learn it
  • Examining a simple program
  • Learning about the types of variable you can have (numbers, strings, tuples, arrays)
  • Introducing control flow with if, for, while and loop
  • Talking about functions and expressions
  • Preparing ourselves for the next video, which is about memory management

If you’d like to learn more about Unicode and character sets, try my video Interesting Characters where I share how surprisingly interesting this whole area is.

Links:

The course materials for this series are developed by tweede golf. You can find more information at github.com/tweedegolf/101-rs and you can sponsor the work at github.com/sponsors/tweedegolf. They are released under the Creative Commons Attribution Share Alike 4.0 International license.

This series of videos is copyright 2023 Andy Balaam and the tweede golf contributors and is released under the Creative Commons Attribution Share Alike 4.0 International license.