JadeLib

[jack]

AIR, often one needs to know if there is no occurrence of the substring, how does your instr function handle that?

[John]

undef?

[Mike Lobanovsky]

Jade isn't BASIC. 

Probably not but your casual and definitive "Jade is using a "0" based index" raised questions immediately from at least three BASIC-ers. Doesn't that ring the bell?

[Mike Lobanovsky]

undef?

John is hopelessly incorrigible.

[John]

I'm thinking about changing my last name to Trump. 

[AIR]

AIR, often one needs to know if there is no occurrence of the substring, how does your instr function handle that?

If you try this, you will see that it returns a '-1'.

Code: C++

1. include <jade.hpp>
2.  
3. MAIN
4.     STRING blah("This is a string");
5.     PRINT(INSTR(blah,"or"));
6. END

AIR.

[John]

If you try this, you will see that it returns a '-1'.

Sure looks like undef to me.

[AIR]

Jade isn't BASIC. 

Probably not but your casual and definitive "Jade is using a "0" based index" raised questions immediately from at least three BASIC-ers. Doesn't that ring the bell?

I encourage questions like this, but I also encourage you guys/gals to also try addressing your questions by coding.  I want you to find any issues; unfortunately I don't think zero vs one based indexing is one of them.  It's just different for BASIC-ers.  But not for people using other languages.

[Mike Lobanovsky]

But not for people using other languages.

Armando, you telling this to me?! There's been nothing else but C/C++ for me to code in for decades!

Never mind though. If there was at least one solid reason behind such a design decision for you as a (the?) project developer then so be it.

[John]

Code: [Select]

A$ = ""
IF MID(A$,69,3) = "AIR" THEN

TRUE in JADE returning -1.

[Mike Lobanovsky]

Code: [Select]

A$ = ""
IF MID(A$,69,3) = "AIR" THEN

TRUE in JADE returning -1.

 

TRUE = -1 is another BASIC oddity that's been making me dizzy for as long as I can remember.

But seriously, it's a good catch John!

Armando, the ball is on your side...

[AIR]

But not for people using other languages.

Armando, you telling this to me?! There's been nothing else but C/C++ for me to code in for decades!

Nah, it was for everyone!!

[John]

Actually SB would return an undef for my example. Irritating but something I learned to live with.

[Mike Lobanovsky]

John, you don't have to apologize. Armando will have to defend his design decision or admit his defeat.

[AIR]

Code: [Select]

A$ = ""
IF MID(A$,69,3) = "AIR" THEN

TRUE in JADE returning -1.

Actually, this would throw an out of bounds error.

I updated MID$ to compare string length to start position.  Update and rebuild the lib.