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another hint: do not use str or char

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Jorge Aparicio 2020-06-22 15:33:39 +02:00
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beginner/README.md
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@ -384,6 +384,8 @@ heapless = "0.5.0"
If you haven't use a stack-allocated collection before note that you'll need to specify the capacity of the collection as a type parameter using one of the "type-level values" in the `heapless::consts` module. The crate level documentation of the `heapless` crate has some examples.
*IMPORTANT* you do not need to use the `str` or `char` API to solve this problem, other than for printing purposes. Work directly with slices of bytes (`[u8]`) and bytes (`u8`); and only convert those to `str` or `char` when you are about to print them.
P.S. The plaintext string is *not* stored in `puzzle.hex` so running `strings` on it will not give you the answer.
These are our recommended steps to tackle the problem. Each step is demonstrated in a separate example: