iOS Question Error in LastIndex2

[shirlun]

With B4I 2.80, The following code return -1.

ret = "1{234567".LastIndexOf2("{", 6)

ret = "1{234567".LastIndexOf2("{", 7)

 

[JanPRO]

Hi,

from the documentation:

Similar to LastIndexOf. The search starts at the given index.

Jan

 

[shirlun]

Starts at the given index and advances to the beginning, but in my testing it returns -1 which is not correct.

 

[JanPRO]

Starts at the given index and advances to the beginning

No, thats wrong.
ret = "1{234567".LastIndexOf2("{", 6) ---> Only the part "7" will be searched for the string "{", so the result is -1.

In your case you should simply use

ret = "1{234567".IndexOf("{")

Jan

 

[shirlun]

In B4A, the result of above code is not -1.

 

[JanPRO]

Yes, you are right. These methods seems to work differently in B4i/B4a.

Jan

 

[Erel]

It is a bug in LastIndex2. It is fixed for the next update.

 

[shirlun]

This bug still in V3.0

 

[Erel]

Works properly here. Are you using a local builder? Have you updated it?

 

[shirlun]

Double checked, same bug in V3.0

 

[Erel]

Are you using the hosted builder?

 

[shirlun]

Yes

 

[Erel]

Can you send me an email with your hosted builder id? Maybe the core library was not updated properly on one of the servers.

 

[shirlun]

Have sent to [email protected]

 

[Erel]

I'm running this code:

Private Sub Application_Start (Nav As NavigationController)
   Log("1{234567".LastIndexOf2("{", 6))
End Sub

It prints 1. Try to clean the project (Ctrl + P).

 

[shirlun]

Still return -1

 

[Erel]

Any other beta tester can test it?

 

[JanPRO]

Hi,

for me it works fine and prints 1 too.

Jan

 

[shirlun]

I must use LastIndexOf to replace LastIndexOf2, this will slow down the app.

x = use.SubString2(0, test + 1).LastIndexOf("{")
'x = use.LastIndexOf2("{", test)

 

[shirlun]

This bug still in v3.0 release, does it related to windows platform or other things ?