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Co and Contravariance, briefly

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Covariance and Contravariance in Generics



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Videos? Yes You Can!

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I've somewhat changed my opinion about the possibility of learning from videos. I've recently taken a few courses by Udemy and PluralSight. They were excellent and presented by experienced and thorough teachers. By thorough I mean that a couple were a sequence of 250+ lectures (videos) stretching over 30+ hours. (Note that these were...
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Tutes and Snips

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Not too long ago I surpassed 5000 Dream Kudos, whe'hay! That's over 100 tutorials and snippets contributed. This is a good enough reason to create a blog.

I really enjoy writing tutorials. I take pride in my work and I strive to be as clear, and accurate, as I can. It is extremely helpful to me as well. It helps cement, and...
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Polish your Google-fu

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StackExchange

It is hard to over-emphasize the importance of good...
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MVC and C# WinForms Mismatch

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I found this brief MVC example for Java which used four direction buttons (North, South, East, West) and a speed slider, and provided a message to indicate whether the direction had changed and whether any speed was specified. I decided well, it should be possible to do something similar in C# WinForms, even though I was well aware that WinForms...
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VB.NET Code Samples

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Here presented for your delight is a wall of VB.NET code. These are code samples and fragments I have collected over a length of time, some of which have appeared in the Snippets section.

Initially, it lists code by the name of the Control it demonstrates but thereafter it loses some order. Personally, I search a keyword or control name to find...
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JSFiddle display console and share

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My shortest blog to date, but perhaps one of the most useful.

To display a console in JSFiddle add this link (Firebug Lite) as an External Resource in the left pane, then Run your code.

Image reduced in size

example

console.log("hello"); will send output to this window. This is much better than using alerts, or having to configure an element...
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Bung Excel Into ListView

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I don't know why one would want Excel data in a ListView, but it seems a shame to do so cell-by-cell. In particular, I was hoping to take advantage of SubItems.AddRange to at least add one row of Excel data at a time.

UsedRange will reference the table of Excel data and (not so many people know) an entire Excel range can be fed to an ...
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Cats be Gone

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Nothing to do with programming.

One day there were two kittens. No consultation, my live-in landlady just decided. What's their names? Rocky and Rosie. Silly names.

They were kept indoors, which seems a bit odd to me. We have a garden. Still, I suppose some people do consider that cats can be indoor cats.

Things started well. They were fed...
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In Too Deep?

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Occasionally someone will start a thread on a fairly sophisticated project. It is difficult to help. They will either post too little information, not appreciating that it is they that are totally immersed in their project, everyone else is totally reliant upon the information in their (short) post(s). Or, they will post their entire project, but...

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