A local variable instantiated within a lambda expression is unique per invocation of the delegate instance. : Lambda « LINQ « C# / C Sharp

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A local variable instantiated within a lambda expression is unique per invocation of the delegate instance.
 

using System;
delegate int NumericSequence();

class Test {
    static NumericSequence Natural() {
        return () => { int seed = 0; return seed++; };
    }

    static void Main() {
        NumericSequence natural = Natural();
        Console.WriteLine(natural());
        Console.WriteLine(natural());
    }
}

 
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