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fix: make the reason more understandable #4074

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Merged
merged 3 commits into from
Dec 12, 2024
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fix: make the reason more understandable #4074

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26f571b
fix: make the reason more understandable
spotlesscoder Oct 16, 2024
66ef2b6
Merge branch 'main' into patch-1
spotlesscoder Dec 12, 2024
addb9e1
Update src/ch04-03-slices.md for formatting
chriskrycho Dec 12, 2024
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10 changes: 6 additions & 4 deletions src/ch04-03-slices.md
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Expand Up @@ -16,10 +16,12 @@ slices, to understand the problem that slices will solve:
fn first_word(s: &String) -> ?
```

The `first_word` function has a `&String` as a parameter. We don’t want
ownership, so this is fine. But what should we return? We don’t really have a
way to talk about _part_ of a string. However, we could return the index of the
end of the word, indicated by a space. Let’s try that, as shown in Listing 4-7.
The `first_word` function has a `&String` as a parameter. We don’t need
ownership, so this is fine. (In idiomatic Rust, functions do not take ownership
of their arguments unless they need to, and the reasons for that will become
clear as we keep going!) But what should we return? We don’t really have a way
to talk about part of a string. However, we could return the index of the end of
the word, indicated by a space. Let’s try that, as shown in Listing 4-7.

<Listing number="4-7" file-name="src/main.rs" caption="The `first_word` function that returns a byte index value into the `String` parameter">

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