NOT quite right

[emmanuel 0]

ok, why is this not valid?

if $cmdline[1] not "/h"

I get:

Line 0:

if $cmdline[1] not "/h" or $cmdline[1] not "/?" then

if ^ ERROR

Error: Error in expression.

If I used <> instead of NOT it would work fine.

And, to me, it looks like I'm using "not" as it should be used, as stated in the helpfile, on the operator's description page:

NOT Logical NOT operation.  e.g. NOT 1    (equals 0)

Does Logical mean that it only works in binary or numeric situations?

[Valik 468]

If Not ($cmdLine[1] = "/h") Or Not ($cmdLine[1] = "/?") Then

Not behaves like the inverse operator in bash (Linux shell). It takes whatever the result is and inverts it.

[pekster 0]

Does Logical mean that it only works in binary or numeric situations?

This might help you understand NOT a bit more.

[emmanuel 0]

thank you both, I will read up on NOT...

[CyberSlug 3]

Keep in mind that NOT acts on one operand. Comparsion operators like greater-than, less-than, equals all act on two operators.

(operand1 > operand2)

NOT (operand)