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A Multiple Linked Lists/Hash Tables Example

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Submitted on: 11/25/2008 2:41:07 PM
By: Jason James Newland  
Level: Intermediate
User Rating: By 3 Users
Compatibility: VB.NET
Views: 7771
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     (UPDATED) This is a small module which encapsulates VB's HashTable class and allows multiple tables from single calls using an array. Comes with a demonstration app. Current methods are hMake, hAdd, hDel, hFree, hKeys. Any other methods I should expose, please comment :). Happy coding!
 
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Other User Comments

11/18/2008 10:22:47 PMJason Newland

Just one thing i noticed whilst playing around with it, in the "hAdd" sub, where it says:

With cHashList(i)
If StrComp(sHashName, .sHName, 1) = 0 Then
'We found the table
before the:
.cHL.Add(sKey, sData)
add:
If Len(.cHL(sKey)) <> 0 Then .cHL.Remove(sKey)
otherwise it causes a "System.ArgumentExceptional" warning and doesn't add the data (because the key already exists). Sorry.
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11/26/2008 9:50:29 PMJason Newland

In this update, I rewrote the hMake and hFree procedures as mainly the hFree was not working properly and removing 1) the wrong table and if not 2) all of them except the first one as well as causing a first chance exception. Of course, I didn't find these things out until I started using it in a program and found that some tables were being destroyed and some data was not being overwritten on hAdd either. All fixed and working properly now, sorry about that.
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12/21/2008 3:18:33 AMxaetak

Great code!

This is way better then your vb6 version.

Keep up the good work Jason.
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