Tag Archives: programming

Are you Still Manually Approving Online Sales? Don’t!

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The whole point of the online sales revolution, and as a direct result, the growth of companies like Amazon, eBay, and dozens of smaller sites like Newegg and ZipZoomFly, is to take advantage of the benefits brought by technology to the retail industry. These advantages include less overhead costs, fewer employees, constant availability, and instantaneous sales. So, please do tell, why is that you’re still manually verifying and validating all sales before they go out!?

This may not be too obvious when you’re selling tangible goods over the internet – after all, there is still a lot of the “human element” when it comes to packaging and shipping the product. But when you’re selling digital products, be it software, music, games, or text, you should never, ever have a human doing the verification. It’s insulting.

With presence of automated purchase validation systems, like 2Checkout and PayPal IPN available which give virtually real-time updates on the status of a transaction and let you know when you’ve received your money (or at least when it’s on its way), there is absolutely no need for a data monkey to press “OK” at the prompt. After all, what’s this data monkey know that PayPal’s IPN report hasn’t already told your system?

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Proper Shell Scripting on Windows Servers with Perl

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  • Fact: Shell scripting is a must for any serious IT admin managing a server. From automating backups to checking logs and keeping server performance and load in check, scripting is a must.
  • Fact: Shell scripting on Windows sucks. ((Hopefully Monad (Microsoft Power Shell) will provide a solution, but so far the results are mixed; and it’s not popular enough to be considered a viable substitute at the moment.))
  • Fact: Shell scripting on Linux and other *nix operating systems is powerful, well-documented, and quite straight-forward.

Most people take a look at these three facts, and instantly come to a conclusion.. the wrong conclusion: you can’t properly manage a Windows server because it’s inherently lacking in the shell scripting department.

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Complete .NET Portability with Wine & Mono?

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Mono is the open-source version of Microsoft’s .NET Framework. It implements most of the backend framework features, but unfortunately, falls flat on its pretty little face when attempting to display the user interface – which is what desktop apps are all about.

Wine on the other-hand, is a Linux port of (major parts of) Microsoft’s Win32 library – the core dependencies of the Windows development libraries, and more importantly, the win32 interface elements. With Wine, you can run many traditional C++ win32 executables on Linux, with certain limitations.

Mono’s biggest stumbling block is the GUI and .NET programs that use P/Invoke to call native non-managed win32 dlls – Mono is a pure .NET environment, and can’t handle them. But from the description above, that’s exactly what WINE excel at… So can’t we use WINE + Mono to make just about any .NET program run on Linux fresh out of the .NET compiler?

Unfortunately, the answer is no. Back when the Mono project was first starting out, the Mono development team considered using WINE to implement the System.Windows.Forms namespace of the .NET Framework (which is practically 100% native C++ unmanaged win32 code in .NET wrappers). But they made the right choice in deciding to not take the easy way and go that route, leaving the integrity of the Mono project intact and focusing on true cross-platform user interface libraries instead (the GTK# is now the UI Library of choice for cross-platform .NET applications).

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Managed Pointers to Managed Objects (or Aliases for Objects) in C# and Visual Basic .NET

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One of the biggest advantages of managed frameworks/platforms like Microsoft’s .NET Framework (and it’s Linux-counterpart, Mono), and Java is that you, as a developer, have a choice of not mucking around with pointers. To be totally honest, with Java you’re forced not to – in C#, it’s a choice you have to make.

There’s plenty of good reasons for not using (unsafe!!) pointers, but that’s not the issue here. The question is, what if you want something to “point” to another object, and synchronize it’s value automatically, without resorting to unsafe pointers? There’s actually a quite simple answer using just a single line of C# code.

Whereas in C++ you could write something like what appears below, in C# you’d have to declare it as unsafe, then jump through a hundred hoops to get it to properly point to a managed object:

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