Asserts that two expressions are equal to each other.
On panic, this macro will print the values of the expressions with their debug representations.
debug_assert_eq! statements are only enabled in non
optimized builds by default. An optimized build will not execute
debug_assert_eq! statements unless
-C debug-assertions is passed to the
compiler. This makes
debug_assert_eq! useful for checks that are too
expensive to be present in a release build but may be helpful during
development. The result of expanding
debug_assert_eq! is always type checked.
let a = 3; let b = 1 + 2; debug_assert_eq!(a, b);