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Borrowed Value Does Not Live Long Enough Closure

Rust borrowed value does not live long enough

What does this error mean?

When the compiler says that the borrowed value does not live long enough, it means that the value is being borrowed for a longer period of time than it is valid for. This can happen when you try to return a borrowed value from a function, or when you try to store a borrowed value in a variable that will outlive the original value.

How to fix this error

There are a few ways to fix this error. One way is to move the borrowed value into the function or variable that needs it. This will ensure that the value is only borrowed for as long as it is needed.

Another way to fix this error is to use a lifetime annotation. A lifetime annotation specifies the lifetime of a borrowed value. This will tell the compiler how long the value is valid for, and will help to prevent the error from occurring.

Example

Here is an example of how to fix the "borrowed value does not live long enough" error using a lifetime annotation:

``` fn main() { let x = 5; let y = &x; // borrowed value // This will cause an error let z = y; // borrowed value does not live long enough // This will fix the error let z: &i32 = &y; // specify the lifetime of the borrowed value } ``` In this example, the variable `x` is borrowed by the variable `y`. The variable `z` is also borrowed by the variable `y`. However, the variable `z` has a lifetime annotation that specifies that it will only be valid for as long as the variable `y` is valid. This prevents the error from occurring.



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