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series: fix outdated instructions #1919

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May 7, 2024
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series: fix outdated instructions #1919

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series: fix outdated documentation
senekor May 6, 2024
40107fd
clarify number of empty strings
senekor May 6, 2024
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8 changes: 7 additions & 1 deletion exercises/practice/series/.docs/instructions.append.md
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# Instructions append

Different languages on Exercism have different expectations about what the result should be if the length of the substrings is zero.
For Rust, we expect you to output a number of empty strings, which will be one greater than the length of the input string.
On the Rust track, we don't have a test for that case, so you are free to do what you feel is most appropriate.

Consider the advantages and disadvantages of the following possibilities:
- Crash the program with `panic!`.
- Return a `Result::Err`. (not possible here, because the function signature is given)
- Return an empty vector.
- Return a vector containing as many empty strings as the lenght of the string "digits" **plus one**. (this has some nice mathematical properties!)