Is basic a single line single instruction code language?

AlanFoo · Post by **AlanFoo** » Tue Sep 01, 2009 11:56 am

Am new to purebasic.

Currently learning to do basic programming in purebasic.

I tried to have multiple instructions codes in a single line e.g.
a$=B$:X=1

or dim a(100), b(200)

etc

Purebasic gives an error . Is there a syntax to do this or purebasic is a single line singe instruction code language?

btw....
Can someone from the Purebaisc adm help?

I tried to order the licence today for Euro 79 thru this site, but was refused for reasons :security reasons.
I checked with my citibank credit card div. they said there is no issue with my card. So what is the other althernative to pay? I I use paypal?

I am from Malaysia. Is it because they refuse purchases from Malaysia?

Regards
Alan

Michael Vogel · Post by **Michael Vogel** » Tue Sep 01, 2009 12:04 pm

Okay, the security issues should be checked by the PB-Team...

...but I can give you an answer to your single instruction line question: yes and no

Yes - each Purebasic instruction has to be separated, so IF a<10 THEN a=a+1 ENDIF is not allowed (in a single line)

No - you can use the colon ( : ) as a separator as well, so IF a<10 : a+1 : ENDIF will work

BTW your a$=B$:X=1 example should also work without an error (at least with all Purebasic versions I've used so far

Hope you'll be able to get Purebasic soon, I'm quite sure you'll like it,
Michael

Joakim Christiansen · Tue Sep 01, 2009 12:52 pm

This is also okay:

Code: Select all

Define value.l=22, string$ = "hello", whatever=12

blueznl · Post by **blueznl** » Tue Sep 01, 2009 12:57 pm

But... the question is: do you WANT multiple instructions per line?

I think it's a horrible way to keep your code readable, but then again I have been known for having my own opinions

http://www.xs4all.nl/~bluez/datatalk/pure4.htm#1_style

AlanFoo · Post by **AlanFoo** » Tue Sep 01, 2009 1:04 pm

Thansk micheal for the reply.

Yes, tried it and it works. Must have been other syntax issues when I got the error.

Regards
Alan

As for payment for purebasic, hope someone from Purebasic adm will help.
Am very eager to use Purebasic for my projects. Love the examples...:>)
and the good support from fello users here.

UserOfPure · Post by **UserOfPure** » Tue Sep 01, 2009 1:30 pm

blueznl wrote:But... the question is: do you WANT multiple instructions per line?

It sure beats scrolling to read your code!

Kaeru Gaman · Post by **Kaeru Gaman** » Tue Sep 01, 2009 2:04 pm

UserOfPure wrote:
blueznl wrote:But... the question is: do you WANT multiple instructions per line?
It sure beats scrolling to read your code!

only if you keep the lines short enough not to need to scroll horizontally.

but in general, I prefer having Ifs and such multilined.

Trond · Post by **Trond** » Tue Sep 01, 2009 4:59 pm

About the payment, email Fred on this address: alphasnd@purebasic.com.

John Puccio · Post by **John Puccio** » Wed Sep 02, 2009 7:50 am

Well Alan, you've come to the right language. Single line coding is considered to be poor style. As your code grows and you gain experience you will no longer do this.

a$=B$:X=1

instead you will do this

a$ = B$
X = 1

There are exceptions of course, but generally speaking it's not a good way to code. The above code is not a good example because it's too short to make the point. Do a search on the PurePunch contest read the rules. Then unzip the files and look at the source's and you will understand why. Welcome to PURE!

Kaeru Gaman wrote:
UserOfPure wrote:
blueznl wrote:But... the question is: do you WANT multiple instructions per line?
It sure beats scrolling to read your code!
only if you keep the lines short enough not to need to scroll horizontally.

You could always set your type size to really really small..

JP

UserOfPure · Post by **UserOfPure** » Wed Sep 02, 2009 9:42 am

Code: Select all

Protected a.l, b.l
Global throttle_limit.l, torque.l, driver_name.s

Those who oppose multiple keywords on a single line should therefore also convert the above to:

Code: Select all

Protected a.l
Protected b.l
Global throttle_limit.l
Global torque.l
Global driver_name.s

Otherwise, isn't there just a little bit of hypocrisy there?

Kaeru Gaman · Post by **Kaeru Gaman** » Wed Sep 02, 2009 9:56 am

one has to know metes and bounds.

normal Ifs: give it one line per Command.
really short Ifs: put it in one line.

Code: Select all

If X > 639 : X = 0 : EndIf

Declarations: group by type and purpose.

Code: Select all

Define.l MX, MY, MBL0, MBR0, MBL1, MBR1

Define.l PlX, PlY
Define.l DpX, DpY

Define.d ShX, ShY, Speed
Define.l EngFlg 
Define.l Rotation, RotSpd, RotPhs

Define.d RadaX, RadaY, RadaP
Define.l RadarRot, RadaC

"Readability" is not carved in stone, it's a dynamic thing and changes from situation to situation.

djes · Post by **djes** » Wed Sep 02, 2009 10:06 am

As with Purebasic we can't assign multiples values in one line, I think it sometimes could be convenient to do things like that

Code: Select all

x = 1.0 : y = 1.0 : z = 1.0

.

Comtois · Post by **Comtois** » Wed Sep 02, 2009 10:42 am

using Global you can write :

Code: Select all

Global Dim a(100), Dim b(200)

or Protected in a procedure :

Code: Select all

Procedure toto()
  Protected Dim a(100), Dim b(200)
EndProcedure

Little John · Post by **Little John** » Wed Sep 02, 2009 1:27 pm

djes wrote:As with Purebasic we can't assign multiples values in one line, I think it sometimes could be convenient to do things like that
Code: Select all
x = 1.0 : y = 1.0 : z = 1.0
.

We can do that. Your code works fine here with the current version 4.31 (Windows).

Regards, Little John

eesau · Post by **eesau** » Wed Sep 02, 2009 1:33 pm

Little John wrote:
djes wrote:As with Purebasic we can't assign multiples values in one line, I think it sometimes could be convenient to do things like that
Code: Select all
x = 1.0 : y = 1.0 : z = 1.0
.
We can do that. Your code works fine here with the current version 4.31 (Windows).

Maybe he meant something like:

Code: Select all

x, y, z = 1.0