Learning Rust Programming Language - day10

I'm new to Rust and it's time to learn a new programming language! Today, let's understand Error Handling in Rust

01:00 - Review of common collections in Rust
07:13 - Memory allocation and references in vectors
08:58 - Iterating over vector elements
09:57 - Using enum to store multiple types in vector
11:16 - Dropping vectors and UTF8 strings
18:45 - Introduction to hashmap in Rust
31:45 - Starting error handling in Rust
35:13 - Panic macro and stack unwinding
44:59 - Using backtrace to debug panics
58:51 - Recoverable errors with Result type
01:19:57 - Shortcuts for error handling: unwrap and expect
01:22:46 - Propagating errors with the question mark operator
01:50:35 - Deciding when to panic or return Result
02:03:52 - Creating custom types for validation
02:12:46 - Summary of Rust error handling concepts

### Highlights
- 🦀 Rust’s primary collections: vector, string, and hashmap with memory and mutability intricacies.
- ⚠️ Rust’s error handling divides errors into recoverable (`Result`) and unrecoverable (`panic!`).
- 🔥 `panic!` macro stops execution, unwinds stack by default, but can be configured to abort for smaller binaries.
- 🔄 `Result T, E` enum encodes success (`Ok`) and failure (`Err`), enabling explicit error handling.
- ❓ The question mark operator (`?`) simplifies error propagation and reduces boilerplate.
- 🛠️ Best practices: use `Result` for recoverable errors and `panic!` for unrecoverable bugs or contract violations.
- 🔐 Rust’s type system and custom types enforce invariants, reducing runtime errors and improving safety.

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