Make a u64 range

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1

How can I make a range from 0 to u64::MAX and assign it to a variable like it's done for u32

let n in 0 .. u32::MAX

Then pass n to a function in a loop.

https://github.com/paritytech/substrate/blob/59649dd117969467d8046df86afe56810f596545/frame/examples/basic/src/benchmarking.rs#L55

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0..u64::max will work, Range accepts any type. Are you sure you want to though? u64::MAX is 18,446,744,073,709,551,615 (18.446 quintillion), which would take quite a long time to iterate over

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error message

expected u32, found u64
4

Ah, sorry, didn't look at the linked code closely enough.
It seems the issue is that the Vec expects u32, so instead of Vec::<u32>::new(), try Vec::<u64>::new(), or Vec::new() and let the compiler figure it out.

(but a Vec of length u64::MAX certainly won't work)

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