When should I use Lazy<T>?

.net, c#, lazy-evaluation

Solution

You typically use it when you want to instantiate something the first time its actually used. This delays the cost of creating it till if/when it's needed instead of always incurring the cost.

Usually this is preferable when the object may or may not be used and the cost of constructing it is non-trivial.

Problem

I found this article about `Lazy<T>`: Laziness in C# 4.0 – Lazy Can someone point me to a practical use of the `Lazy<T>` class in a real application? In other words, when should I use it?

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