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• Regarding address operator C/C++

  - by iSight

  Hi, What does address operator mean. say in the method below. what should be passed in the method as parameter value of integer or the address of an integer variable. void func1(int&)// method declaration void func1(int& inNumber)//method definition { //some code }

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• Instantiating a generic class in Java

  - by ripper234

  I know Java's generics are somewhat inferior to .Net's. I have a generic class Foo<T>, and I really need to instantiate a T in Foo using a parameter-less constructor. How can one work around Java's limitation?

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• Dynamic column heading from user input

  - by user79127

  Hi, How can I use the user input for column heading in reporting service please? My situation is User will enter first (200901) and the second parameter (05). I want to display the column heading like 200901 200902 200903 200904 200905 Thanks for all helps.

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• How to get a char* pointer to a C++ string?

  - by cambr

  I have a C++ string. I need to pass this string to a function accepting char* parameter, for example - strchr(). a) How do I get that pointer? b) Is there some funtion equivalent to strschr() that works for C++ strings?

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• Several buttons on one form calling same function

  - by user198003

  hi all, trying to develop web form using jquery. all i need is to have several (don't know how many) buttons on one form. all of those buttons have to call one same function, and to pass one parameter to that function. that function have to do some post method, but i can handle it. so, my main problem is that i don't know how to develop JS that will call specific jquery function. can you help me with this?

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• How to pass Button.Click into a function?

  - by Achilles

  I have a function that adds eventhandlers to control events. Right now I have several overloads that add events to different types of controls: Public Sub AddEventHandler(Button, ButtonEvent) 'adds event handling for Button.Click public Sub AddEventHandler(LinkButton, ButtonEvent)'adds event handling for LinkButton.Click The problem is I want to write a function that is more robust like: Public sub AddEventHandler(Control, EventToHandle, ControlEvent) where EventToHandle is the parameter representing Button.Click or whatever event that Button has associated with it. Any suggestions guys? Thanks!

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• How to create an after_save callback on runtime

  - by dorelal

  I am using ruby on rails 2.3.5 . I have user instance. On run time depending on certain conditions I want to add an after_save callback just for this instance. The other issue is that this after_save should take a block or a proc as parameter. What I want is something like this. This is psuedo code. user = User.first proc = Proc.new do puts 'this is foo' end user.after_save proc

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• JQuery function to select checkboxes

  - by Adem

  I need a function that accepts a parameter with its id example a div and after that loops inside the div to look for checkboxes and if there is/are any checks if its value is checked and returns true if every checkbox is checked returns false.

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• how to I get the class name when I am passing in a genertic in my method?

  - by Blankman

  My method looks like: public string DoObjectProperties<T>(T obj, string text) { } Now from within the method, I need to get the string value of the class name that i pass into the method's 'obj' parameter. So if I pass in the User object, I need the text 'user'. To get the properties I am using: typeof(T).GetProperties() How can I get the classes name?

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• Comparing arrays with sql

  - by Nissim

  I want to perform a 'SELECT' statement with a byte array (binary) parameter as a condition. I tried to google it, but didn't find anything useful. In general, I keep information of files in the database. one of the properties is the file's hash (binary). I want to give a hash to the SELECT statement, and get all rows with the same hash value.

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• Ttrigger extra paramter

  - by fire

  According to the jQuery manual you can send extra parameters (as an array) when calling a trigger. I am using this at the moment: $('#page0').trigger('click', [true]); How would I pick up whether the paramter has come through or not when using this? $('ul.pages li a').click(function() { // Do stuff if true has been passed as an extra parameter });

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• Tapestry5 display grid component using a hashmap

  - by Eldred

  Hi there I am trying to attempt to display a hashmap using a grid component. If I use List list = CollectionFactory.newList(MyHashMap) it returns a list however on my template page I see Empty and false when passing my parameter t:souce="list" to my grid component, therefore my grid component only returns one row. Some code snippets would be a great help. Many thanks

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• When pass-by-pointer is preferred to pass-by-reference in C++?

  - by skydoor

  I can imagine one case, in which the input parameter could be NULL so that pass-by-pointer is preferred but not pass-by-reference? Can anybody add more cases?

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• Prolog Question

  - by Dan

  Assume the third parameter is the result. a( 1, [Hd | Tl], Hd ). a( N, [ | Tl], Elem ) :- N 1, N1 is N - 1, a( N1, Tl, Elem).

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• Maximum Length for a foreign key in DB2? (SQL0107N)

  - by IronGoofy

  We have two installations of DB2. When defining a foreign key with a long name, it works fine on one instance, but not on the other (we get a SQL0107N Name too long - max length is 18). What is causing this different behaviour? Is there a parameter we can change or is it version dependant?

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• Custom route does not work in ASP.net MVC 3

  - by user603007

  I am trying to implement my custom route in ASP.net MVC 3 but I get this error: The resource cannot be found. global.asax public static void RegisterRoutes(RouteCollection routes) { routes.IgnoreRoute("{resource}.axd/{*pathInfo}"); routes.MapRoute( "mycontroller", // Route name "{controller}/{name}", // URL with parameters new { controller = "MyController", action = "Search" } // Parameter defaults ); } MyController.cs public class MyController : Controller { public ActionResult Search(string name) { return Content(name); } }

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• How to implement callback functions inside classes (PHP)

  - by sombe

  I need to use a class callback method on an array inside another method (the callback function belongs to the class). class Database { public function escape_string_for_db($string){ return mysql_real_escape_string($string); } public function escape_all_array($array){ return array_filter($array,"$this->escape_string_for_db"); } } Is this the right way to go about that? (I mean, in terms of the second parameter passed to array_filter)

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• Problem with generics

  - by jess

  I have this code in base class protected virtual bool HasAnyStuff<TObject>(TObject obj) where TObject:class { return false; } In child class I am overriding protected override bool HasAnyStuff<Customer>(Customer obj) { //some stuff if Customer.sth etc return false; } I am getting this error '''Type parameter declaration must be an identifier not a type''' What is it I am doing wrong here?

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• Java reference storage question

  - by aab

  In java, when you pass an object to a method as a parameter, it is actually passing a reference, or a pointer, to that object because objects in Java are references. Inside the function, it has a pointer to that object which is a location in memory. I am wondering where this pointer lives in memory? Is a new memory location created once inside the function to hold this reference?

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• C# property ending with ?

  - by MicMit

  What does that mean ? public bool? Verbose { get; set; } When applied to string? , there is an error Error 11 The type 'string' must be a non-nullable value type in order to use it as parameter 'T' in the generic type or method 'System.Nullable'

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• Function callers in C?

  - by thyrgle

  So I was wondering how they work. To explain what I mean by a "function caller" a good example of what I mean would be glutTimerFunc, it is able to take in a function as a parameter and call it even with it not knowing it is declared. How is it doing this?

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• MySQL Can't Handle Parameters for Stored Procedures

  - by Takkun

  I'm trying to make a stored procedure but it doesn't seem to be recognizing the parameters I've given it. Procedure create procedure test_pro(IN searchTable VARCHAR(55)) begin select * from searchTable limit 10; end // Trying to execute mysql> call test_pro('exampleTable'); ERROR 1146 (42S02): Table 'db.searchTable' doesn't exist It isn't replacing the searchTable with the parameter that is passed in.

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• C++ Question on the pow function.

  - by Sagistic

  I'm trying to get this expression to work, I'm pretty sure its not the parenthesis because I counted all of them. Perhaps there something I'm doing wrong involving the parameter pow (x,y). double calculatePeriodicPayment() { periodicPaymentcalc = (loan * ((interestRate / yearlyPayment))) / (1-((pow ((1+(interestRate / yearlyPayment)))),(-(yearlyPayment * numOfYearLoan)))); return periodicPaymentcalc; }

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• Summarize Data with SQL statement

  - by bugbug

  I have CMS table that contain CMS_STARTTIME and CMS_STOPTIME (attachment). I want to create report to summarize exist data by using Date, Time and Year as Parameter (attachment). I don't know how to create sql statement to meet this requirement. I'm using MySQL and MS-SQL. Does one can help? Thank you very much.

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• How to convert a String to a Range Object

  - by nimo

  Hi, Is there anyway to convert a string value to a Range object ? I'm having a function which takes a Range object as a argument and need to pass a single string parameter to it Thank You

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