Assertion or assert may refer to: Assertion (software development), a computer programming technique. assert.h, a header file in the standard library of the C programming language. Assertion definition language, a specification language providing a formal grammar to specify behaviour and interfaces for computer software.
Grass snakes prey mainly on amphibians, especially the common toad and the common frog, although they may also occasionally eat ants and larvae. Captive snakes have been observed taking earthworms offered by hand, but dead prey items are never taken.
Insects. Smaller snakes, such as the garter snake, will eat a variety of insects, including crickets, cockroaches and insect larva, such as mealworms. While homeowners can be frightened to see small snakes in their yard and garden, they can be beneficial at killing pests.