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Programming-Idioms

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  • Ruby

Idiom #123 Assert condition

Verify that predicate isConsistent returns true, otherwise report assertion violation.
Explain if the assertion is executed even in production environment or not.

raise unless isConsistent

There's no assert method in Ruby standard library
#include <assert.h>
assert(isConsistent());

If NDEBUG is defined, the assert macro becomes void. Therefore, such expressions must not have side effects.
New implementation...
< > ⌨
programming-idioms.org 
raise unless isConsistent
assert(isConsistent());
(assert (true? (isConsistent)))
(assert (isConsistent))
assert(isConsistent());
var result = isConsistent();
Debug.Assert(result);
var result = isConsistent();
Trace.Assert(result);
assert(isConsistent);
assert(isConsistent);
if (.not. isconsistent) stop "Inconsistent state"
if !isConsistent() {
	panic("State consistency violated")
}
assert isConsistent()
let x' = assert isConsistent x
console.assert(_isConsistent);

assert isConsistent() : "State consistency violated";
(assert (isConsistent))
assert(isConsistent() , "Assertion violation") 
assert(_isConsistent);
{$ASSERTIONS ON}
Assert(isConsistent,'isConsistent assertion failed.');
assert { is_consistent };
assert isConsistent
assert!(is_consistent);