rustBorrow example in Rust
A borrow in Rust is when a variable is given temporary access to a resource. This allows the variable to use the resource without taking ownership of it.
let mut x = 5;
let y = &x;
println!("x = {}", x);
println!("y = {}", y);
Output example
x = 5
y = 5
In this example, x
is a mutable variable with the value of 5. y
is a borrow of x
, meaning it has access to the value of x
without taking ownership of it. When we print out the values of x
and y
, we can see that they are both 5.
Code explanation
let mut x = 5;
: This declares a mutable variablex
with the value of 5.let y = &x;
: This declares a borrow ofx
calledy
.println!("x = {}", x);
: This prints out the value ofx
.println!("y = {}", y);
: This prints out the value ofy
.
Helpful links
Related
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- How to borrow vector element in Rust
- When to use borrow in Rust
- How to borrow a string in Rust
- How to borrow struct field in Rust
- How to return borrow in Rust
- How to borrow moved value in Rust
- How to borrow option value in Rust
- How to borrow hashmap in Rust
- How to borrow iterator in Rust
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See more codes...