This rule applies whenever an if statement is followed by one or more elsif statements; the final elsif
should be followed by an else statement.
The requirement for a final else statement is defensive programming.
The else statement should either take appropriate action or contain a suitable comment as to why no action is taken. This is
consistent with the requirement to have a final else clause in a case statement.
Noncompliant code example
if x == 0
doSomething
elsif x == 1
doSomethingElse
end
Compliant solution
if x == 0
doSomething
elsif x == 1
doSomethingElse
else
raise 'An error has occured'
end
Exceptions
When all branches of an if-else if end with return, break or throw, the code that
comes after the if implicitly behaves as if it was in an else clause. This rule will therefore ignore that case.
