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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 ...
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.
conclusion iff conditions. it uses sentences of the form: conclusion if conditions. to reason forwards from conditions to conclusions or backwards from conclusions to conditions. The database semantics is analogous to the legal principle expressio unius est exclusio alterius (the express mention of one thing excludes all others). Moreover, it ...
condition: An expression which is evaluated as a boolean value. expression 1, expression 2: Expressions with values of any type. If the condition is evaluated to true, the expression 1 will be evaluated. If the condition is evaluated to false, the expression 2 will be evaluated.
if condition then code block 1 else code block 2 end Flowchart illustrating the use of else if. The conditional expression is condition, and if it is true, then code block 1 is executed, otherwise code block 2 is executed. It is also possible to combine multiple conditions with the else-if construct:
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It may be the case that several sufficient conditions, when taken together, constitute a single necessary condition (i.e., individually sufficient and jointly necessary), as illustrated in example 5. Example 1 "John is a king" implies that John is male. So knowing that John is a king is sufficient to knowing that he is a male. Example 2
Trump wrote the tariffs on Mexico and Canada will take effect if the two countries don’t take strong action to clamp down on illegal immigration and illicit drug flows.