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If-then-else flow diagram A nested if–then–else flow diagram. In computer science, conditionals (that is, conditional statements, conditional expressions and conditional constructs) are programming language constructs that perform different computations or actions or return different values depending on the value of a Boolean expression, called a condition.
The detailed semantics of "the" ternary operator as well as its syntax differs significantly from language to language. A top level distinction from one language to another is whether the expressions permit side effects (as in most procedural languages) and whether the language provides short-circuit evaluation semantics, whereby only the selected expression is evaluated (most standard ...
Programmers can rewrite an if-then-else expression in a more concise way by using the conditional operator. [3] ... If the condition is evaluated to false, the ...
Note that nesting #if functions like this gets very resource-intensive very fast. On some wikis, even seven levels of nesting might exceed resource limits. See the discussion of #ifeq for how to detect whether a parameter has been defined regardless of whether its value is true or false.
The corresponding logical symbols are "", "", [6] and , [10] and sometimes "iff".These are usually treated as equivalent. However, some texts of mathematical logic (particularly those on first-order logic, rather than propositional logic) make a distinction between these, in which the first, ↔, is used as a symbol in logic formulas, while ⇔ is used in reasoning about those logic formulas ...
A fast-spreading wildfire that erupted this week about 45 miles northwest of Los Angeles roared from nothing to nearly 10,000 acres − in a matter of hours. The Hughes Fire that started Wednesday ...
The sun being above the horizon is a necessary condition for direct sunlight; but it is not a sufficient condition, as something else may be casting a shadow, e.g., the moon in the case of an eclipse. The assertion that Q is necessary for P is colloquially equivalent to "P cannot be true unless Q is true" or "if Q is false, then P is false".
OCD is one of the most misunderstood mental health conditions. Many assume it’s all about being tidy or organized, but the reality is far more complex. ... OCD Fact #3: It Can Be Devastatingly ...