LiveCode Forums.

I can

add 1 to field lblXXX

but how do I subtract 1?

Tried adding (-1) and got a raspberry from Rev.

Can't find anything like

field lblXXX = field lblXXX -1

or

field lblXXX -=1

Hi,

again, script would be helpful.

--
on mouseUp pMouseBtnNo
local myVar
put 5 into myVar
add (-1) to myVar
put myVar
end mouseUp

subtract 1 from myVar

put myVar -1 into myVar

Many choices...

Just checked the transcript dictionary...


subtract is nicely linked from add

I think I failed every mathematics exam I
ever took so you shouldn't be surprised
that I didn't look for "subtract".

Not the usual way in programming.

As I said before I look for something familiar
like += and -+.

And on top of all that it's 8am in Melbourne
and I haven't gone to bed yet.

The hardest part about learning Rev if you have previous (non hypercard) programming experience, is to unlearn the things you already know. I agree there should be better documentation for potential switchers from other languages, where syntactic differences like those are covered.

All the best,

Malte

In most of the dictionary pages, there is a "See also ..." list of related functions.
These are hyperlinked (although it isn't obvious) to the relevant page.
It also pays to think in terms of a word rather than a symbol, ie think "add"instead of +.
I really miss things like i++,+= and -=, but you've got to go with the flow

cheers
Paul

The add and subtract were in V1 but one would expect
that some more usual version would have been added
by now.

Although Rev is a nice language to use it never seems
to be well maintained or updated.

Anyway it's better than C or C++ which are a big
joke.

Your "usual version" is judged coming from your lack of background in xtalk languages. I don't mean to be harsh, but from all your posts you are wanting revolution/xtalk to be c/c++.

Basically your asking for xtalk to take away the one thing that makes it stand out from the "usual" programming languages, its english-like syntax (or readability in other words).

Well put, Jeremy