how to run

cargo run --bin 1

linker using lld

sudo dnf install clang, lld


- add config in .cargo/config.toml
[target.x86_64-unknown-linux-gnu]
rustflags = ["-C", "linker=clang", "-C", "link-arg=-fuse-ld=lld"]

linker using mold

sudo dnf install mold

- add config in .cargo/config.toml
[target.x86_64-unknown-linux-gnu]
linker = "/usr/bin/clang"
rustflags = ["-C", "link-arg=--ld-path=/usr/bin/mold"]

- check binary
readelf -p .comment target/debug/main

notes

• 1, 1-10, how handling index as i32 not usize 1-dod, add data oriented design 1-16, build your own hashmap 1-sicp, add sicp style
• 2, optimize for someone hate .unwrap()
  • 2-4, get rid of unwrap() with Some()
  • 2-5, use pattern matching like match with Some()
  • 2-7, using pointer dereference. pattern match and Some()
  • 2-8, the fastest one
  • 2-16, fast, short without unwrap
  • 2-20, unsafe but clean enough
  • 2-24, end of our journey. it is fast, with error handling without unwrap
  • 2-31, definitely end of our journey
  • 2-28, it is using data oriented signature, without unwrap and lot of way to handle
  • 2-33, handling as_mut
  • 2-35, most beautiful code i ever see. without unwrap, just straight forward
• 16, nice handling test case.
  • try not use clone(). and let see move works.
  • using to_vec could get rid clone()
• 94, using some "Option<Rc<RefCell>>"
• 98,
  • had function from_vec for better input and output
  • 98-1, modified input for take null input
• 427, even it didn't had rust input so we use c++
• 652, want see some troublesome "Vec<Option<Rc<RefCell>>>"
• 731, nice way to use vector pair
• 895, nice struct
• 951,
  • 951-2, it had clean input vector without using Some()
• 1028,
  • 1028-2, the most hard i ever seen
• 1367,
  • 1367-2, painful linked list in binary tree in rust
• 1405, -1405-3, fun with pattern matching
• 1438-2, how to handle unwrap with some
• 1545, bit manip 1 << (n - 1) -1593, better editorial
• 1684
  • 1684-2, our first lifetime
  • 1684-3, if you hate to_string()
• 1792, no one want to solve this 1792-2, stackoverflow notes is really good
• 1932, it takes a lot of time for solve this things
• 2058, nice idea for using Some()
• 2326, rust really wild in this questions, vector, linkedlist
  • 2326-4, our first unsafe
• 2416, it is using trie
• 2491, really nice how key value works in different language
• 2458, hard definitely painfully hard
  • 2458-3, handling unwrap using .map(Some)
  • 2458-7. our first STACK OVERFLOW
• 2583, tree
• 2601, first |&&p| it means reference to reference
• 2641, still troublesome
  • 2641-10, peak of parsing input output tree without Some() and make it clean
  • 2641-11, end of our journey
• 2914, how to use for loop in different ways
• 3217,
  • 3217-3, completely remove all unwrap

textbook that i use

• Code Like a Pro in Rust, Brenden Matthews
• Idomatic Rust, Brenden Matthews