named-parameters

This seems like a simple question, but for some reason I can't find the answer anywhere. Basically, I'd like to be able to implement a constructor that takes NamedParameters . By named parameters, I do not mean parameters with default values (optional parameters) such as: public SomeMethod(){ string newBar = Foo(bar2 : "customBar2"); } public string Foo(string bar1 = "bar1", bar2 = "bar2" ){ //... } A good example of what I'm trying to achieve is the AuthorizeAttribute from the System.Web.Mvc assembly. Which you can use the following way: [Authorize(Roles = "Administrators", Users =

Is it possible in php like in python to have named function parameters? An example use case is: function foo($username = "", $password = "", $timeout = 10) { } I want to override $timeout : foo("", "", 3); Ugly. I would much rather do: foo(timeout=3); No, named parameters are not possible in PHP. Technically when you call foo($timeout=3) it is evaluating $timeout=3 first, with a result of 3 and passing that as the first parameter to foo() . And PHP enforces parameter order, so the comparable call would need to be foo("", "", $timeout=3) . You have two other options: Have your function take an

New to Spring, I am trying to insert a List<Map<String, Object>> into a table. Until now I have been using the SqlParameterSource for batch update, which works fine when a java bean is supplied to them. Something like this: @Autowired private NamedParameterJDBCTemplate v2_template; public int[] bulkInsertIntoSiteTable(List<SiteBean> list){ SqlParameterSource[] batch = SqlParameterSourceUtils .createBatch(list.toArray()); int[] updateCounts = v2_template .batchUpdate( "insert into sitestatus (website, status, createdby) values (:website, :status, :username)", batch); return updateCounts; }

I'm pretty new to Ruby so apologies if this is an obvious question. I'd like to use named parameters when instantiating a Struct, i.e. be able to specify which items in the Struct get what values, and default the rest to nil. For example I want to do: Movie = Struct.new :title, :length, :rating m = Movie.new :title => 'Some Movie', :rating => 'R' This doesn't work. So I came up with the following: class MyStruct < Struct # Override the initialize to handle hashes of named parameters def initialize *args if (args.length == 1 and args.first.instance_of? Hash) then args.first.each_pair do |k, v|

I'm coding a transaction manually in ADO.NET. The example I'm working from reuses the SqlCommand which seem like a fine idea. However, I have added parameters to my command. My question is: in the following code, is command.Parameters.Clear() correct? Or am I doing it wrong? using (var connection = new SqlConnection(EomAppCommon.EomAppSettings.ConnStr)) { connection.Open(); SqlTransaction transaction = connection.BeginTransaction(); SqlCommand command = connection.CreateCommand(); command.Transaction = transaction; try { foreach (var itemIDs in this.SelectedItemIds) { command.CommandText =

so .Net 4 added named and optional parameters which are pretty sweet. I don't need to make as many 1 line overload methods. Will that work over WCF? Since these are compiler semantics I'd say no. However you'd expect them to work in the only following way. On the Service Code side all code would accept the defaulted parameters. On the client side I note that the 'Add Service Reference' tooling on VS2010 doesn't take the defaults and add them to the generated proxy. So You'd have to generate you're own proxy. In this way the client code can use the defaults if the the default is specified in