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eMag Jan 2013 Issue - VB Classic Edition

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Each month on or after the 1st, and only once a month, we will send you content from up to 5 community groups. If you select this VB Classic group, you'll receive the following content below mixed in with the other groups you elect to include.

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  January 2013 - VB Classic Edition Year 15 Issue 1  
I.T. Discussion Community!


Expert guidance from working professionals!
IT Water-Cooler for Power-Users topic:
Stamp Out Spam
by Vicki Nelson

How to fight back against spam and reclaim your inbox. As you may know, the volume of spam messages sent across the Internet has reached epidemic levels. Some industry experts estimate that three out of every five e-mail messages that are sent today are spam. The spam epidemic is costing companies, professionals, and individual users considerable amounts of time, money, and resources.

What is spam, and what can I do about it? Spam is generally defined as an unsolicited mailing, usually sent to many recipients. Most spam is commercial advertising, often for dubious products, get-rich-quick schemes, or quasi-legal services. Spam costs the sender very little to send. Most of the costs are paid by the recipient or the carriers rather than the sender. Some effective methods for preventing your e-mail address from being captured, sold or abused by spammers in the full version of this article. Click the title to read more.


Off Shoring topic:
Off-shoring: You CAN fight back!
by Wes Peterson

Are you fed up with calling a company and finding yourself speaking to somebody in a foreign country? 

I am, and I've just learned of an effective way to fight back, help return jobs to America, and keep them here.

The best part? We don't have to wait for government to do a thing.






 VB Classic Group Top 
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Tool Basics topic (classic post):
VB Classic Comments (' or REM)
by Mike Prestwood

Commenting Code
VB Classic, like all the VB-based languages, uses a single quote (') or the original class-style basic "REM" (most developers just use a quote). VB Classic does NOT have a multiple line comment.

Directives - #

Directives are sometimes called compiler or preprocessor directives. A # is used for directives within VB Classic code. VB Classic offers only an #If..then/#ElseIf/#Else directive.


Language Basics topic (classic post):
VB Classic Logical Operators (and, or, not)
by Mike Prestwood

VB Classic logical operators:

and and, as in this and that
or or, as in this or that
Not Not, as in Not This


 Monthly VB Classic Lesson
OOP Topic:
Code Snippet of the Month

VB6 has limited support for interfaces. You can create an interface of abstract methods and properties and then implement them in one or more descendant classes. It's a single level implementation though (you cannot inherit beyond that). The parent interface class is a pure abstract class (all methods and properites are abstract, you cannot implement any of them in the parent class).

In the single level descendant class, you have to implement all methods and properties and you cannot add any. Your first line of code is Implements InterfaceName.

Tool Basics Topic:
Tip of the Month

Short-circuit evaluation is a feature of most languages where once an evaluation evaluates to False, the compiler evaluates the whole expression to False, exits and moves on to the next code execution line. In VB Classic, the if statement does not support short-circuit evaluation but you can mimic it. Use either an if..else if..else if statement or nested if statements. You will find that your code that makes use of this technique will be clearer and easier to maintain than the short-circuit equivalent and faster than ingnoring the issue.




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