Add Chapter 0: Getting Started#6
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Maps Python's try/except/None to Rust's Result<T,E>, Option<T>, and the ? operator. Covers custom error types, Option chaining, iterator collect into Result, and the LBYL/EAFP/types comparison. 16 passing example tests, 5 exercises with todo!() stubs. Also fixes ch01 Logger exercise: replaced todo!() in Drop impl with a comment-only stub to avoid double-panic abort in the test runner. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Covers rustup/cargo installation, side-by-side Python vs Rust syntax for variables, functions, strings, control flow, collections, and iterators. Includes a Cargo command cheat sheet mapping to Python equivalents. 11 passing example tests, 5 exercises (multiply, string format, fizzbuzz, iterator map, and a score summarizer). Also adds Ch0 to the course README table of contents. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The old pipeline ran `cargo test --workspace` which fails because exercise crates contain todo!() stubs that panic at runtime. That's by design — students fill them in. New pipeline has 5 jobs, all meaningful: 1. secrets-scan — gitleaks on full history 2. forbidden-patterns — grep for private infra leaks 3. lint — cargo fmt + clippy on entire workspace (exercises have #![allow] for expected warnings from stubs) 4. test-examples — run tests on chapter crates only (not exercises), using cargo metadata to discover crates dynamically 5. build-exercises — compile exercise test binaries without running them, catching type errors and broken scaffolding Also adds rust-cache for faster CI runs and updates branch protection to require all 5 jobs. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
let/let mut), functions, string formatting, if/else as expressions, Vec, HashMap, iteratorsTest plan
cargo test -p ch00-getting-started— 11/11 passcargo clippy --workspace -- -D warnings— cleancargo fmt --all -- --check— cleanDepends on #1
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