assertion

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assertion

(programming)
1. An expression which, if false, indicates an error. Assertions are used for debugging by catching can't happen errors.

2. In logic programming, a new fact or rule added to the database by the program at run time. This is an extralogical or impure feature of logic programming languages.
References in classic literature ?
Now and then, as he made an assertion, he shot a venomous glance at his opponent, who seemed to be slumbering deeply, with the same broad, happy smile upon his face.
This was an error, that was an assumption, and the next was an assertion contrary to ascertained truth as printed in all the text-books.
Reiterating her one triumphant assertion, she fixed her eyes on Julian with a look which said plainly: Answer that if you can.
This is not an assertion founded merely in speculation or conjecture.
For every assertion must, as is admitted, be either true or false, whereas expressions which are not in any way composite such as 'man', 'white', 'runs', 'wins', cannot be either true or false.
We found her indeed all that our warmest wishes could have hoped for; we had no difficulty to convince her that it was impossible she could love Graham, or that it was her Duty to disobey her Father; the only thing at which she rather seemed to hesitate was our assertion that she must be attached to some other Person.
Flowers and fruits are always fit presents; flowers, because they are a proud assertion that a ray of beauty outvalues all the utilities of the world.
Moreover, the assertion made by various writers that his cold was the cause of his dispositions not being as well planned as on former occasions, and of his orders during the battle not being as good as previously, is quite baseless, which again shows that Napoleon's cold on the twenty-sixth of August was unimportant.
and of her own amazing skill and courage in riding it; concluding with an assertion that she could clear a five-barred gate 'like winking,' that papa said she might hunt the next time the hounds met, and mamma had ordered a bright scarlet hunting-habit for her.
SHEA had just beaten me at chess, as usual, and, also as usual, I had gleaned what questionable satisfaction I might by twitting him with this indication of failing mentality by calling his attention to the nth time to that theory, propounded by certain scientists, which is based upon the assertion that phenomenal chess players are always found to be from the ranks of children under twelve, adults over seventy-two or the mentally defective--a theory that is lightly ignored upon those rare occasions that I win.
His assertion that a peculiarly susceptible subject may be kept in the realm of the unreal for weeks, months, and even years, dominated by whatever delusions and hallucinations the operator may from time to time suggest, is a trifle disquieting.
Delamayn asserts that this person in the back-ground has no claim on him, and backs his assertion by declaring that she is married already to Mr.