From the course: Rust Essential Training
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Slices as function parameters - Rust Tutorial
From the course: Rust Essential Training
Slices as function parameters
- [Instructor] Being able to reference only part of a collection is incredibly useful and you'll commonly see slices used as function inputs and outputs, especially on functions that work with strings. For example, the get_first_word function shown here on line seven takes a borrowed reference to an entire string as input and then returns a slice containing just the first word of that input string all without taking ownership of the string. It does that by converting the input string reference into a slice of bytes representing its contents and then iterates through that slice of bytes one at a time, checking for the byte sequence that represents a space character with the if expression on line 11. If it finds a space, that means we've reached the end of a word and it returns a slice of the input string ranging from its beginning up to the index where we found the first space. If the for-loop searches the entire string…
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