README.md

by just-do-halee

Today I learned

2022-11-30

• Rust::Alloc

  • ::Vec

    _ = vec![1,2,3,4,5];
    // same as Box::new([1,2,3,4,5]).into_vec();
    // so the capacity is 5 as .len()

    struct ClonableStruct;
    impl Clone for ClonableStruct {
        fn clone(&self) -> Self {
            eprintln!("cloned!");
            Self
        }
    }
    _ = vec![ClonableStruct; 10];
    // will print out "cloned!" 9 times
    // first one is just original

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