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Programmers can use assertions to help specify programs and to reason about program correctness. For example, a precondition—an assertion placed at the beginning of a section of code—determines the set of states under which the programmer expects the code to execute.
The fifth and sixth examples are meaningful declarative sentences, but are not statements but rather matters of opinion or taste. Whether or not the sentence "Pegasus exists." is a statement is a subject of debate among philosophers. Bertrand Russell held that it is a (false) statement. [citation needed] Strawson held it is not a statement at all.
In interpersonal communication, an I-message or I-statement is an assertion about the feelings, beliefs, values, etc. of the person speaking, generally expressed as a sentence beginning with the word I, and is contrasted with a "you-message" or "you-statement", which often begins with the word you and focuses on the person spoken to.
Obversion changes the quality (that is the affirmativity or negativity) of the statement and the predicate term. [10] For example, by obversion, a universal affirmative statement become a universal negative statement with the predicate term that is the class complement of the predicate term of the original universal affirmative statement.
Compound statements may contain (sequences of) statements, nestable to any reasonable depth, and generally involve tests to decide whether or not to obey or repeat these contained statements. Notation for the following examples: <statement> is any single statement (could be simple or compound). <sequence> is any sequence of zero or more ...
For example, oxygen is necessary for fire. But one cannot assume that everywhere there is oxygen, there is fire. A condition X is sufficient for Y if X, by itself, is enough to bring about Y. For example, riding the bus is a sufficient mode of transportation to get to work.
Management assertions or financial statement assertions are the implicit or explicit assertions that the preparer of financial statements is making to its users.These assertions are relevant to auditors performing a financial statement audit in two ways.
In computer software testing, a test assertion is an expression which encapsulates some testable logic specified about a target under test. The expression is formally presented as an assertion, along with some form of identifier, to help testers and engineers ensure that tests of the target relate properly and clearly to the corresponding specified statements about the target.