the language is so terrible and inconsistent. I want to stab out my eyes just reading it. How do I force myself to read the entire thing without having a nervous break down and come to after implementing a full replacement in lisp?
Name:
grrr2013-08-13 4:12
The IS and IS NOT operators work like = and != except when one or both of the operands are NULL. In this case, if both operands are NULL, then the IS operator evaluates to 1 (true) and the IS NOT operator evaluates to 0 (false). If one operand is NULL and the other is not, then the IS operator evaluates to 0 (false) and the IS NOT operator is 1 (true). It is not possible for an IS or IS NOT expression to evaluate to NULL. Operators IS and IS NOT have the same precedence as =.