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These ones are pretty simple in implementation but go a long way to cleaning up your code. In some cases, the slight performance overhead may not be acceptable but I haven’t run into any real-world problems with them. Check out the usage below.
int x = 3;
// is x either 1, 3, or 5?
if (x.In(1, 3, [...]
.NET 3.5 brought a bunch of great extension methods to the framework, most of which extended the IEnumerable<T> (or IQueryable<T>) interfaces implemented by just about every collection type. These include simple ones such as Where, OrderBy, FirstOrDefault, etc as well as more complex ones like Aggregate, GroupBy, etc. The Enumerable class really covers a lot [...]
Regular Expressions in .NET are pretty easy to use (assuming you understand the Regex syntax which is beside the case) and certainly you can think of some useful extension methods for System.String that would allow you to quickly validate against a particular regular expression pattern. But regular expressions have another great feature that you maybe [...]
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