rustHow to assert errors in Rust

Rust provides the assert! macro to assert errors. This macro takes a boolean expression as an argument and will panic if the expression evaluates to false.

Code example:

let x = 5;
assert!(x == 5);

Output

No output, as the expression evaluates to true.

Explanation:

1. let x = 5;: This statement declares a variable x and assigns it the value 5.
2. assert!(x == 5);: This statement uses the assert! macro to check if the expression x == 5 evaluates to true. If it does, the macro does nothing, otherwise it will panic.

Helpful links:

1. Rust Documentation - assert!
2. Rust by Example - assert!

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