optional-parameters

I have the following code: public static MyMethod() { ...Do something ProtectedMethod(param1, param2); ...Do something } protected static void ProtectedMethod(IEnumerable<string> param1, string param2, int param3 = 1) { ... Do something } Take notice of the optional param3 parameter. Now for quite a few reasons I need to extract the code of the MyMethod method into its own class but I cannot extract ProtectedMethod with it because of all the classes that are inheriting from this one and I need to keep the changes small and isolated. So I figured I could have an Action<> delegate in the new

I'm writing some stored procs in SQL Server 2008, and wondered if the concept of optional input parameters is possible here? I suppose I could always pass in NULL for parameters I don't want to use, check the value in the stored proc, then take things from there, but I was interested if the concept is available here. Thanks! You can declare like this CREATE PROCEDURE MyProcName @Parameter1 INT = 1, @Parameter2 VARCHAR (100) = 'StringValue', @Parameter3 VARCHAR (100) = NULL AS /* check for the NULL / default value (indicating nothing was passed */ if (@Parameter3 IS NULL) BEGIN /* whatever code

I'm trying to declare an argument in Swift that takes an optional closure. The function I have declared looks like this: class Promise { func then(onFulfilled: ()->(), onReject: ()->()?){ if let callableRjector = onReject { // do stuff! } } } But Swift complains that "Bound value in a conditional must be an Optional type" where the "if let" is declared. You should enclose the optional closure in parentheses. This will properly scope the ? operator. func then(onFulfilled: ()->(), onReject: (()->())?){ if let callableRjector = onReject { // do stuff! } } To make the code even shorter we can use

I want to build a webservice with this signature, which does not throw an exception if param2 is left empty. Is this possible? [WebMethod] public string HelloWorld(string param1, bool param2) { } The exception is a System.ArgumentException that is thrown when trying to convert the empty string to boolean. Ideas that have not worked so far: method overloading is not allowed for webservices, like public string HelloWorld(string param1) { return HelloWorld(param1, false); } as suggested here : make bool nullable bool? . Same exception. manipulate the WSDL, see this answer My question is related