No matter how polished the appearance of an application, web site, or advertisement is, the presence of even a single spelling error can make it look sloppy and unprofessional. The bad news is that spelling errors are incredibly easy to make - either due to mistyping or because one forgot which of the many, conflicting special cases applies in a particular circumstance. The good news is that technology to detect and correct spelling errors exists and is readily available. By making regular use of a spell-checker, you don't have to be a good speller to look like one. Trust me! ;)
Spell-checking of documents is pretty well covered these days, with all the popular word processors offering automated, interactive assistance. However, spell-checking of code is not quite so far along - even high-end editors like Visual Studio don't tend to offer interactive spell-checking support. Fortunately, it's possible - even easy! - to augment the capabilities of many development tools to integrate spell-checking into the development workflow. There are a few different ways of doing this: one is to incorporate the checking into the editing experience (like this plugin by coworker Mikhail Arkhipov) and another is to do the checking as part of the code analysis workflow (like code analysis rule CA1703: ResourceStringsShouldBeSpelledCorrectly). I'd already been toying with the idea of implementing my own code analysis rules, so I decided to experiment with the latter approach...
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As you might expect, it's possible to create custom code analysis rules and easily integrate them into your build environment; a great walk-through can be found on the Code Analysis Team Blog. If you still have questions after reading that, this post by Tatham Oddie is also quite good. And once you have an idea what you're doing, this documentation by Jason Kresowaty is a great resource for technical information.
Read more: Greg's Cool [Insert Clever Name] of the Day
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