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Do I need a last `else` clause in an `if. . . else if` statement? In your case, whether you need an else clause depends on whether you want specific code to run if and only if neither of condition1, condition2, and condition3 are true else can be omitted for any if statement, there is nothing special in the last if of an if else if chain This is documented in any JavaScript grammar, e g in the specification
Else clause on Python while statement - Stack Overflow The else clause is executed if you exit a block normally, by hitting the loop condition or falling off the bottom of a try block It is not executed if you break or return out of a block, or raise an exception It works for not only while and for loops, but also try blocks You typically find it in places where normally you would exit a loop early, and running off the end of the loop is an
sql - can you do an ELSE WHEN on a CASE - Stack Overflow No, ELSE is a catch-all In your example, it's not clear why you would want to include a condition in the ELSE clause, since you've already checked the logically opposite condition in the first WHEN expression However, more generally, you can nest CASE expressions, which would look something like this:
What is the intended use of the optional else clause of the try . . . 93 Python try-else What is the intended use of the optional else clause of the try statement? The intended use is to have a context for more code to run if there were no exceptions where it was expected to be handled This context avoids accidentally handling errors you did not expect
What is the benefit of terminating if … else if constructs with an else . . . Regarding why else is not needed after every single if: An if-else or if-else if-else completely covers all possible values that a variable can have But a plain if statement is not necessarily there to cover all possible values, it has a much broader usage Most often you just wish to check a certain condition and if it is not met, then do