rustHow to get the first element of a slice in Rust?
The first element of a slice in Rust can be obtained using the get
method. This method takes an index as an argument and returns an Option
type.
Example code
let slice = [1, 2, 3];
let first_element = slice.get(0);
Output example
Some(1)
The get
method returns an Option
type, which is an enum with two variants: Some
and None
. If the index is valid, Some
is returned with the element as its value. If the index is out of bounds, None
is returned.
Code explanation
let slice = [1, 2, 3];
: creates a slice with three elementslet first_element = slice.get(0);
: calls theget
method on the slice with the index0
as an argument
Helpful links
Related
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See more codes...