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POIs there a way to avoid overloading a method with Func<T, ...> argument for each Func parameter count
 

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  1. POIs there a way to avoid overloading a method with Func<T, ...> argument for each Func parameter count
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    <p>I know the question sounds a bit wierd. Sorry for that, having difficulties trying to get where i want to and even explain it. To make it simple, i have a method with <code>Func&lt;T&gt;</code> argument. But i do not always pass a parameterless <em>Action</em> to that method, i need <strong>varying</strong> numbers of parameters and i'm trying to find a way to avoid <em>overloading</em> my method everytime number of parameters needed is increased</p> <p>Here is my <em>generic</em> class, I need to <em>overload</em> <code>GetInstance</code> method:</p> <pre><code>public class MethodResult&lt;T&gt; { public T Result { get; set; } public bool IsResulted { get; set; } public Exception Error { get; set; } private MethodResult() { } public static MethodResult&lt;T&gt; GetInstance&lt;T&gt;(Func&lt;T&gt; method) { MethodResult&lt;T&gt; obj = new MethodResult&lt;T&gt;(); try { obj.Result = method(); obj.IsResulted = true; obj.Error = null; } catch (Exception ex) { obj.Result = default(T); obj.IsResulted = false; obj.Error = ex; } return obj; } public static MethodResult&lt;T&gt; GetInstance&lt;T, T1&gt;(Func&lt;T1, T&gt; method, T1 param1) { MethodResult&lt;T&gt; obj = new MethodResult&lt;T&gt;(); try { obj.Result = method(param1); obj.IsResulted = true; obj.Error = null; } catch (Exception ex) { obj.Result = default(T); obj.IsResulted = false; obj.Error = ex; } return obj; } } </code></pre> <p>And here is sample showing how i want to make use of it:</p> <pre><code>public static void Main(string[] args) { var x = MethodResult&lt;int&gt;.GetInstance(IntResult, 5); Console.WriteLine("Result: {0}, IsResulted: {1}, ErrorMessage: {2}", x.Result, x.IsResulted, (x.Error == null ? "null" : x.Error.Message)); var y = MethodResult&lt;string&gt;.GetInstance(SayHello); Console.WriteLine("Result: {0}, IsResulted: {1}, ErrorMessage: {2}", y.Result, y.IsResulted, (y.Error == null ? "null" : y.Error.Message)); Console.Read(); } public static int IntResult(int x) { return x + 1; } public static int IntResult(int x, int y) { return x + y; } public static string SayHello() { return "Hello world!"; } </code></pre> <p>In order to be able to use <code>IntResult(int x, int y)</code> i have to <em>overload</em> <code>GetInstance</code> method with signiture:</p> <p><code>public static MethodResult&lt;T&gt; GetInstance&lt;T, T1, T2&gt;(Func&lt;T1, T2, T&gt; method, T1 param1, T2 param2)</code></p> <p>It's obvious that this will become very time consuming as it's already been annoying. Is there a way to avoid that much <em>overloading</em> ?</p>
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    1. USmetalmad
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    1. COthis is similar to http://stackoverflow.com/questions/6096519/overloading-a-method-with-parameter-funct
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      1. POIs there a way to avoid overloading a method with Func<T, ...> argument for each Func parameter count
      1. USKevin Nacios
    2. COBest way I can think of is to use lambdas: `MethodResult<int>.GetInstance(() => IntResult(5));`
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      1. USChris Sinclair
    3. CO@ChrisSinclair +1 simple as that. No complexity, no dozens of overloadings
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      1. USSaro Taşciyan
 

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