topic Re: Breaking Long Code Lines in Libraries & objects

Breaking Long Code Lines

Anonymous — Tue, 27 Apr 2004 00:47:58 GMT

How do you break a single long line of code into several shorter lines? In Visual Basic you can put an underscore character at the end of one line to tell VB that the statement is continued on the next line. Any equivalent in GDL?

Re: Breaking Long Code Lines

Anonymous — Tue, 27 Apr 2004 01:12:07 GMT

It depends on what is making your line long. You can always put a return (line feed) after a comma. I don't think you can break up a formula (i.e. return after a `+` or such). You might be able to return after `&` and `OR` conditions. I don't recall if I've tried this or not but I think the comma is the only line continuation character.

The short answer is to add a return/line feed and see if an error results.

Re: Breaking Long Code Lines

Anonymous — Tue, 27 Apr 2004 01:40:37 GMT

Also (I guess you allready know this, but...) the colon ":" symbol is meant to combine 2 lines into 1, so replace it with a return.

I doubt that's the problem, but you never know.

Re: Breaking Long Code Lines

Anonymous — Tue, 27 Apr 2004 01:57:02 GMT

It's a mathematical equation. Neither the comma nor the colon work. Oh well.

Re: Breaking Long Code Lines

Anonymous — Tue, 27 Apr 2004 02:18:22 GMT

Try splitting the statement like so:

x = 5 + 20
x = x + 25

And so x becomes 50. It's an option

Re: Breaking Long Code Lines

Daniel Lindahl — Tue, 27 Apr 2004 10:48:16 GMT

Jay wrote:
How do you break a single long line of code into several shorter lines? ....

Jay

From the GDL manual, Chapter 2, section on character strings:

\new line continue string in next line without a new line

I don't know if this works - have never tried it.

Re: Breaking Long Code Lines

Anonymous — Wed, 28 Apr 2004 02:57:49 GMT

Daniel ,
I have some code with some very long "if....then" statements
with lots of "and"s and "or"s that had to be on one line or I
would get error messages if I tried to use commas but
I just tried your suggestion of using the backward slash character
"\" new line to break up the statement into several lines
and I get no error messags.
Thanks for the tip.
Peter Devlin

Re: Breaking Long Code Lines

Anonymous — Wed, 28 Apr 2004 14:50:46 GMT

I tried the backslash in the middle of a very long mathematical statement and it worked just fine.