Jeanne A. E. DeVoto wrote:
Probably should be under 'if' and maybe under 'switch/case' as well; hopefully while changing that, someone will fix the typo that inverts the meaning .....
Note: Transcript uses what is known as "short-circuit evaluation" for logical operators. This means that value1 is evaluated first. If value1 is false, the expression value1 and value2 is false regardless of what value2 is (because the expression evaluates to false unless both the values are true). In this case, Revolution does not evaluate value2, since doing so is not necessary to determine the value of value1 and value2. For example, evaluating the expression asin(2) normally causes an execution error (because 2 is not a legal argument for the arc sine function), but evaluating the expression (1 = 0) and (asin(2) = 1) does not cause an error: since (1 = 1) is always false, the whole statement is always false and Revolution never tries to evaluate the asin function.
(This is under "and" and "or", and probably at least the first part should be included in "if" as well.)
expression (1 = 0) and (asin(2) = 1) does not cause an error: since (1 = 1) is always false, the whole statement is always false and Revolution never tries to evaluate the asin function.
should be "since (1 = 0) is always false"
-- Alex Tweedly http://www.tweedly.net
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