std::debug_assert_eq!
[-] [+]
[src]
( $ ( $ arg : tt ) * ) => ( if cfg ! ( not ( ndebug ) ) { assert_eq ! ( $ ( $ arg ) * ) ; } )
Asserts that two expressions are equal to each other, testing equality in both directions.
On panic, this macro will print the values of the expressions.
Unlike assert_eq!
, debug_assert_eq!
statements can be disabled by
passing --cfg ndebug
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.
Example
fn main() { let a = 3; let b = 1 + 2; debug_assert_eq!(a, b); }let a = 3; let b = 1 + 2; debug_assert_eq!(a, b);