Assert Statements - language feature

Example from Java, Pizza, Oracle Java, Deesel:

// By default, assertions are disabled
// java –enableassertions Test
int score = 10;
assert score >= 10 : " Below";
System.out.println("score is "+score);

Example from C, C++, Objective-C, Tick C:

#include <assert.h>
int i, a[10];
for (i = 0; i < 10; ++i)
  {
  assert(0 <= i && i < 10);
  a[i] = 10-i;
  }
for (i = 0; i < 10; ++i)
  {
  assert(0 <= i && i < 10);
  assert(0 <= a[i] && a[i] < 10);
  a[a[i]] = a[i];
  }

Example from C3:

assert(a > 0, "Expected a positive number");
$assert(Foo.sizeof == 8, "Foo sizecheck at compile time failed");

Example from Speedie:

class Person
 |int| age
 setter age
  // "expect" will actually add an Error to a list of errors
  expect (value >= 0) ("bad age $value set!")
  .age = value

main
 || p = person()
 p.age = -10
 if !stderr.ok
  "Oof we got some errors"

Example from Jule:

use std::debug
use std::debug::assert::{assert}

fn main() {
    std::debug::ENABLE = true
    let x = 200
    assert(x < 200)
}

Languages with Assert Statements include Java, C, C++, Objective-C, C3, Speedie, Jule, Pizza, Oracle Java, Deesel, Tick C

Languages without Assert Statements include progsbase

This question asks: Does the language have built in assert statements?

Read more about Assert Statements on the web: 1.

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