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2. Functions in Rust

Content:

• Function, no args, calling it.
• One string argument, default move, not usable any more after move.
• Immutable ref, can have multiple.
• Mutable ref, can only have one.
• Return values, default move.
• Cannot return reference -> life time tracking.

max-itzpapalotl

0. Why am I making "Rust = Future<C++>" videos?

• Welcome, my name is Max.
• I would like to help you to switch from C++ to Rust programming.
• I believe that the future of C++ programming is Rust.
• I always wanted to invent a programming language. Then I found Rust.
• I like Rust and find that I am very productive with it, after a short amount of time.
• I want to help people to learn Rust.
• Target audience: People, who already know C++ and know how to program.

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1. Getting started with Rust on Linux with vim

Installing Rust with rustup

URL: https://rustup.rs/

Do this command:

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

max-itzpapalotl

3. Basic data types in Rust

• integers, signed and unsigned
• floats
• bool
• char
• std::mem::size_of
• String and &str
• arithmetic: only same types
• casting with "as"

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4. Strings and String Slices

• String vs. &String vs. &str vs. str
• String constants
• Converting between strings and slices
• Taking a slice of a string
• Byte slices
• Conversion to strings
• Unsafe but fast
• Function arguments: prefer &str over &String

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5. Compound types: tuples and arrays

• Tuple type and syntax of tuples
• Printing
• Tuples as argument types, access to components
• Tuples as return values
• Destructuring tuples
• Array type and array syntax
• Printing
• Bounds checking at compile time

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6. Structs and Methods

• Struct types
• Tuple Structs
• Methods and their use
• Private and public data, access rules

Struct definitions

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7. Vectors

• Constructing and accessing
• Element access and bounds checking
• The vec! macro
• Iterating over a vector
• Slices of vectors

Constructing and accessing

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8. HashMaps

• Construction, insertion
• Lookup, deletion
• Matching
• HashMap literals

Construction, insertion

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9. Enums, algebraic types and matching

• Simple enums, construction, handling
• Enums as tagged variants, construction, handling
• Enum arguments
• Matching and destruction
• Methods for enums

Simple enums