JadeLib

[John]

I've leaned to live with undef not being equal to FALSE.

This is the best way to test if a variable is defined or not.

Code: ScriptBasic

1. IF ISUNDEF(A$) THEN
2.   PRINT "TRUE\n"
3. ELSE
4.   PRINT "FALSE\n"
5. END IF
6.  

$ scriba t_undef.sb
TRUE
$

Code: ScriptBasic

1. IF a THEN
2.   PRINT "undef = FALSE\n"
3. ELSE
4.   PRINT "undef = TRUE\n"
5. END IF
6.  

$ scriba t_undef.sb
undef = TRUE
$


A good reason to turn declaring variables on in SB. This prevents weird bugs due to an unexpected undef creeping into the code.

Code: ScriptBasic

1. declare option DeclareVars
2. declare option AutoVars
3.  

If I can live with that, JADE's zero starting string reference is a walk the park. 

[AIR]

John, this thread is about JadeLib.  Please stay on topic.  Thanks.

[John]

Okay

Just sharing I'm no stranger to pain.

[AIR]

Commit 53004c5ded Added LPAD$, RPAD$, and PAD$ Functions.

Code: C++

1. #include <jade.hpp>
2.  
3. MAIN
4.     STRING str = "abcd";
5.  
6.     PRINT(LPAD$(str,10,'*'));
7.     PRINT(RPAD$(str,10,'*'));
8.     PRINT(PAD$(str,10,'*'));
9. END
10.  

$ ./pad
**********abcd
abcd**********
**********abcd**********

If the third parameter (padding character) is omitted, spaces are used.

Note that the padding character is a CHAR (single quotes) in this example.  You can also pass the ASCII numeric value instead, without the quotes.

AIR.

[John]

AIR,

Would it be possible to use JADE to create a SB extension module?

[AIR]

I don't think you can just compile and go, because SB is compiled using C via the build system.

[John]

You're right.

I was just thinking JADE might be a nice way to quickly turn a CPU intensive function into an extension module. I think I should put my efforts in this area to C BASIC and attach Peter's existing API macros to BASIC keywords. I do plan to follow much of your JADE flow and style.

[John]

AIR,

Your last post about JADELIB didn't make it in my last offline backup before the AWS instance crashed. Please post it again when you have time.