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This parser function can be used to detect whether a template parameter is defined, even if it has been set to a false value. For example, to check whether the first positional parameter has been passed to a template (note that the strings "+" and "-" can be any two different non-whitespace strings):
If-then-else flow diagram A nested if–then–else flow diagram. The 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.
In other words, someone could interpret the previous statement as being equivalent to either of the following unambiguous statements: if a then { if b then s1 } else s2 if a then { if b then s1 else s2 } The dangling-else problem dates back to ALGOL 60, [1] and subsequent languages have resolved it in various ways.
For example, in the conditional statement: "If P then Q", Q is necessary for P, because the truth of Q is guaranteed by the truth of P. (Equivalently, it is impossible to have P without Q , or the falsity of Q ensures the falsity of P .) [ 1 ] Similarly, P is sufficient for Q , because P being true always implies that Q is true, but P not being ...
Material implication does not closely match the usage of conditional sentences in natural language. For example, even though material conditionals with false antecedents are vacuously true, the natural language statement "If 8 is odd, then 3 is prime" is typically judged false. Similarly, any material conditional with a true consequent is ...
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Five men who used dating app Grindr to target and attack men in a series of robberies have been jailed. Demalji Hadza, 21, Abubaker Alezawy, 21, Ali Hassan, 20, Wasim Omar, 24, and Mohammed Sharif ...
Here, find a morning stretch routine recommended by physical therapists, including moves like the cat-cow, figure-4 stretch, and more.