csharp / intermediate
Snippet
Constraining Type Parameters with Generic Constraints
Generic constraints allow you to restrict the types that can be used as arguments for a type parameter. By using 'where T : class, new()', we ensure that T is a reference type and has a public parameterless constructor.
snippet.cs
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public class Repository<T> where T : class, new(){public T CreateInstance(){return new T();}}
Breakdown
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where T : class
Ensures that the type parameter T must be a reference type (class, interface, delegate, or array).
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new()
Specifies that the type T must have a public parameterless constructor, allowing the use of 'new T()'.