cargo:rerun-if-changed...

In summary, Rust provides many extremely useful benefits that would improve CPython development. Increasing memory safety would be a significant improvement in of itself, but it is far from the only benefit Rust provides.

constexpr std::array<int64_t, 3> a{1, 2};
std::cout << a[3];

constexpr int64_t a[3] = {1, 2};
std::cout << a[3];

let a: [u32; 3] = [1, 2];
dbg!(a[3]);

error[E0308]: mismatched types
 --> <source>:2:23
  |
2 |     let a: [u32; 3] = [1, 2];
  |            --------   ^^^^^^ expected an array with a size of 3, found one with a size of 2
  |            |     |
  |            |     help: consider specifying the actual array length: 2
  |            expected due to this
error: this operation will panic at runtime
 --> <source>:3:10
  |
3 |     dbg!(a[3]);
  |          ^^^^ index out of bounds: the length is 3 but the index is 3
  |
  = note: #[deny(unconditional_panic)] on by default

constexpr std::array<int64_t, SOME_CONST> a{1, 2};

In the unlikely case that you have very little RAM and a surplus of video RAM, you can use the latter as swap.

💋Ищи самые горячие циклы в нашем бенчмарке.💋