Undocumented Tricks in Basic

[gorchy]

does anyone know some tricks in basic ,maybe to decline the size of programs.
some examples:
-"Delvar ADelvar Str1..." you needn´t to use ":" between the Delvars
-use Text(-1,row,column,"your text to get bit letters in the graph screen

[NETWizz]

Yeah

Leave off excess parenthesis, use smart coding techniques...

Instead of

If B=0
Then
A+1->A
End

Try:

A+1(B=0)->A

You see, B=0 is going to return either a 1 or a 0. If it returns a 1, B does equal 0, and anything you multiply it by will not be affected!

[anduril66]

[yugniht]

[Arcane Wizard]

[yugniht]

yes, I saw that. What I was trying to say is that you could not only do Delvar Str1Delvar A but you could do Delvar Str1Output(1,1," "

I was trying to say that is doesn't have to be between TWO Delvars. Get it???

[Arcane Wizard]

Ah, yes I get it now.

[NETWizz]

Well

pause "TEXT HERE (pauses and displays text)

Text(-1,A,B,"TEXT displays large letters on the graph screen

OutPut(1,1," as the last line of a program prevents the Done from being displayed.

Str1->Y1 string to equation without useing Str>Equ(Str1,Y1

How to get a -> in a string:

type -> on the homescreen and press enter.

You will get err:Syntax, so select quit.

press y=

Press end recal

Now, use Equ>Str(Y1,Str1)

The -> will be in a string.

I am thinking about wrighting a tutorial.


Getkey stuff.

Getkey->K
-(K=24)+(K=26)->A

The above will return either a -1 or 1 depending if you press left or right.

[62 52 53 53]

Pause (variable(s) or text) also allows you to scroll sideways.

[NETWizz]

[Xan]

He means, that you can scroll the text left and right to view a text, which is longer than 16 chars.

You can use the trick with -> to string also with ".
To store " in a string, you can also use ":Input Str1" in a program and then input " simply.

[NETWizz]

input by itself makes a crosshair on the graph screen.

Pressign enter sets Y and X to the value.

[yugniht]

I'll just copy and paste this from my site:

If you want to find out how many places are in a number, just use this line in your program: int(log(# or variable)+1). I'm not sure if this will work with decimals, though

and

Have you ran out of variables to use for your program? Just go to the Finance menu, under the "Apps" button for the 83+, and press the right arrow button so that you are now on the variables menu. You can use just about any of these to store a number to.

I would just like to note that I have not come up with these and I think they came from Basic Guru.

[62 52 53 53]

what do yoy mean "end recal"?

and the indicator off is 90. it works on all loops

[Adm.Wiggin]

I think it is just a typo for 2nd recal, not end recal... ever one makes mistakes

[yugniht]

[Adm.Wiggin]

also for optomization u should use this syntax for no run indic:

Text(-1,0,90," //notice the space here!

with no closing anything

(tested, and works!)

[yugniht]

*sigh* this is nothing new
I already know about the whole no ) and no " to close, but if I didn't put it there, someone would try it and put no space.

[Adm.Wiggin]

it is really cool that we programmers can figure out all these special things! we must be like magic or something... lol jk!

[NETWizz]

Even better is creating an asm program to turn off the indicator. I cannot remember how to do it, but it is a matter of changing a flag or a single bcall, so it is easy.