if statement help.

Posted by David Berthiaume on Sun 19 Feb 2006 09:22 AM — 6 posts, 26,208 views.

David Berthiaume Sun 19 Feb 2006 09:22 AM #0

Right then I know how to use if and elseif, been using them for years now.

The question is can I do a general if statement(pseudo-code to follow)?

stuff = "%1"
if stuff = (numbers but no characters... I.E. words or letters) then
(do stuff here)
elseif stuff = "ON" then
(do more stuff)
elseif stuff = "OFF" then
(more stuff)
else
(something else)
end if

Basically, I want to be able find out if the wildcard is numeral digits, and not letters.

David Haley USA Sun 19 Feb 2006 09:43 AM #1

You'll have to call some function on the wildcard, that will return true or false accordingly. Such functions typically have names like "is_number", "IsNumber", "IsNumeric", etc.

David Berthiaume Mon 20 Feb 2006 12:48 AM #2

In the immortal words of the Guiness guys... Brilliant!

Thalir Sun 05 Aug 2007 01:40 AM #3

I have a tiny question, so I'll reply to this post instead of a making a new thread.

How do I make an:

IF a == b then
(do nothing) -- Is it possible to (do nothing)?
elseif b == c then
Note ("Aha!")
end

Shaun Biggs USA Sun 05 Aug 2007 01:49 AM #4

why not just test for if ( a != b ) and ( b == c ) to get it all in one statement? Some languages will allow you to have empty thens, but it it much more sane looking to just for what you're looking for than to test for what you're not looking for and using an else. The unequals is also varies a lot in different languages. The most popular seem to be != and <>, with Lua using ~=. If an unequals doesn't exist, then you can usually just negate the test with something like not( a == b )

Worstje Netherlands Sun 05 Aug 2007 01:55 AM #5

How about (assuming Lua):

if (a ~= b) and (b == c) then
    Note("Bingo!")
end

Edit: note to self, reply faster.