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• What value is hashCode() method is returning in java?

  - by Jothi

  What value is hashCode() method is returning in java?. i read that it is an memory reference of an object. when i print hascode value for new Integer(1), its 1. for String(a) - 97. so i confused. is it ascii or what type of value is?

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• Need a sample function implement for array interface member...

  - by Nano HE

  I have a interface member like this. AppInterface.cs ObjLocation[] ArrayLocations { get; } App.cs public ObjLocation[] ArrayLocations { get { return **something**; } } I dont know how to complete it, Or there is another way to implement the array members. Then It can pass the compiler. thank you.

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• Cheap and cheerful rand() replacement.

  - by Mick

  After profiling a large game playing program, I have found that the library function rand() is consuming a considerable fraction of the total processing time. My requirements for the random number generator are not very onerous - its not important that it pass a great battery of statistical tests of pure randomness. I just want something cheap and cheerful that is very fast. Any suggestions?

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• When not to use a private field

  - by coffeeaddict

  When should it be considered dangerous to use a private field all over the place in the methods of your class? I mostly just create the variable and set it to a default value like null. Then in my methods reference it and set it to an instance of that object type from the methods. I don't know if my question makes sense but let me know if it doesn't and I'll clarify.

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• Why can't i define recursive variable in code block?

  - by senia

  Why can't i define a variable recursively in a code block? scala> { | val fibs: Stream[Int] = 1 #:: fibs.scanLeft(1){_ + _} | } <console>:9: error: forward reference extends over definition of value fibs val fibs: Stream[Int] = 1 #:: fibs.scanLeft(1){_ + _} ^ scala> val fibs: Stream[Int] = 1 #:: fibs.scanLeft(1){_ + _} fibs: Stream[Int] = Stream(1, ?) lazy keyword solves this problem, but i can't understand why it works without a code block but throws a compilation error in a code block.

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• Simple check authentication decorator in Python + Pylons

  - by ensnare

  I'd like to write a simple decorator that I can put above functions in my controller to check authentication and re-direct to the login page if the current user is not authenticated. What is the best way to do this? Where should the decorator go? How should I pass cookie info to the decorator? Sample code is greatly appreciated. Thank you!

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• javascript simple question

  - by Michael

  window.addEventListener('unload', function(e) { MyClass.shutdown(); window.removeEventListener('unload', /* how to reference the function itself here? */); }, false); The question in the comment.

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• passing parameter from asp.net page to flex application

  - by Sofie_vo

  I have an asp.net page where I get the user_id from who's logged in. Now I need to pass this user_id to a flex application that runs in an asp.net page as a .swf. How can I get this user_id in a variable in my flex application. Or what is the best way to get the user_id into flex. Thanks

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• [C++] Is it possible to roll a significantly faster version of sqrt

  - by John

  In an app I'm profiling, I found that in some scenarios this functions are able to take over 10% of total execution time. I've seen discussion over the years of faster sqrt implementations using sneaky floating-point trickery, but I don't know if such things are outdated on modern CPUs. MSVC++ 2008 compiler is being used, for reference... though I'd assume sqrt is not going to add much overhead though.

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• SQL Reporting Services: Finding the folder a report is in

  - by Bob

  Hi there, If I have the report name how can I programmatically get the name of the project/folder the report is in? So for example if I have a report like so http://server/Reports/Pages/Report.aspx?ItemPath=/ReportProject1/ReportName Given "ReportName" how can I figure out that the report is in the folder "ReportProject1"? So I guess is there a function where I can pass int he report name and get it's details or else query the report server for a list of its report folders and I can loop through these and check some how that the report is inside?

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• C++ passing arguments to a program already running

  - by wyatt

  I'm reading through a tutorial on using voice commands to control applications and, in an example of controlling rhythmbox, it suggests commands such as the following can be executed: rhythmbox-client --play rhythmbox-client --pause Why does this not simply open a new instance of the program, and how can I emulate the functionality in my own programs? For example, how could I pass a string to a particular instance of a program? Thanks

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• callback pattern

  - by robUK

  Hello, gcc 4.4.3 c89 I am creating a client server application and I will need to implement some callback functions. However, I am not too experienced in callbacks. And I am wondering if anyone knowns some good reference material to follow when designing callbacks. Is there any design patterns that are used for c. I did look at some patterns but there where all c++. Many thanks for any suggestions,

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• list box asp.net selected problem

  - by lodun

  .When i choose item from "kategorije" new items loads to me in SUB_kategorije, but when i choose item from SUB_kategorije and when i click on button it shows me this error: Object reference not set to an instance of an object. Line 101: kom.Parameters.Add("@podkategorija", SqlDbType.Text).Value = SUB_kategorije.SelectedItem.ToString(); This is my source... dod_pit.ascx dod_pit.ascx.cs

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• Why must initialization value of field members be determinable at compile time?

  - by flockofcode

  1) Why must initialization value of field members be determinable at compile time? 2) But if the initialization value needs to be determined at compile time, then why am I able to initialize a A.b field using a reference to an object: class A { B b = new B(); } class B {} Thank you

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• Overload with different return type in java?

  - by nunos

  So, I am just starting Java and, even though I have looked in some question about it here at stackoverflow.com and elsewhere, haven't been able to find a straightforward answer to why isn't possible to overload a function just by changing the return type. Why is it so? Will that provably change in a future version of Java? By the way, just for reference, is this possible in C++? Thanks.

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• Excel assign copied sheet name as variable

  - by rach-90

  I'm trying to copy an existing sheet in my workbook and then I want to use the copied sheet to run the rest of my code. (Sheet3 is the existing sheet, S_Temp is the copied sheet) Dim s_Temp as string Sheet3.copy Activesheet.name = S_Temp Sheets("S_Temp").Range("A1").value = "Test" How can I reference to the copied sheet?

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• finding middle element of an array

  - by senthil

  Hi all, I came cross a question in my interview. Question: Array of integers will be given as the input and you should find out the middle element when sorted , but without sorting. For Example. Input: 1,3,5,4,2 Output: 3 When you sort the given input array, it will be 1,2,3,4,5 where middle element is 3. You should find this in one pass without sorting. Any solutions for this?

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• Git push from post-receive

  - by meka

  I have two servers, let's call them first and second. First one is where the real development is done, and second one should be the replica. What I would like to do is put "git push" in post-receive, but there is one problem. Post-receive is executed as the user doing git push to first server, so I can't chmod 600 ssh key with no pass. What is the best practice for this? Thanx!

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• how do i do very fast inserts to SQL Server 2008

  - by CharlesO

  I have a project that involves recording data from a device directly into a sql table. I do very little processing in code before writing to sql server (2008 express by the way) typically i use the sqlhelper class's ExecuteNoneQuery method and pass in a stored proc name and list of parameters that the SP expects. This is very convenient, but i need a much faster way of doing this. Thanks.

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• scriptdata not working in uploadify

  - by Vinoth13

  Hi Friends i am using uploadify for my project.. in that i need to pass some data to upload.php to insert it in database. i am using the below code for sending data and getting it using $_POST in that upload.php file but its not getting those values. $("#fileupload").fileUpload({ 'uploader': 'uploadify/uploader.swf', 'cancelImg': 'uploadify/cancel.png', 'script': 'uploadify/upload.php', 'scriptData' : {'name':'name','status':1} Can anyone help me on this ..

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• Get spiral index from location

  - by ricick

  I'm using Alberto Santini's solution to this question to get a spiral grid reference based on an items index Algorithm for iterating over an outward spiral on a discrete 2D grid from the origin It's not the accepted solution, but it's the best for my needs as it avoids using a loop. It's working well, but what I want now is to do the inverse. Based on a known x and y coordinate return the index of a location. This is as a precursor to returning the items surrounding a given location.

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• what is index in sql server?

  - by Surya sasidhar

  Hi, what is index in sql can u explain or any reference to understand clearly. where should i use the index. I search in stackoverflow but it is not clear for me. thank you

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• How do I do this in my Django URLs? (.json, .xml)

  - by alex

  Suppose this is my URL route: (r'^test/?$','hello.life.views.test'), How do I make it so that people can do .json, .xml, and it would pass a variable to my views.test, so that I know to make json or xml?

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• # character seems to cause problems with a get Request

  - by Ankur

  I have a queryString that I pass to a servlet's doGet() method that looks like this: count=9&preId0=-99&objId0=-99&preId1=-99&objId1=-99&preId2=69&objId2=16#!78&preId3=-99&objId3=-99&preId4=-99&objId4=-99&preId5=-99&objId5=-99&preId6=-99&objId6=-99&preId7=-99&objId7=-99&preId8=-99&objId8=-99 After and including the # everything is null, so I am assuming the # has some special meaning. Is this true? and are there other such characters that will do this?

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• JSF Data transfer between UI to Business Layers

  - by Ram

  Hi, We are using JSF in UI,Spring in Business Layer,Hibernate in Persistance layer.Now my question is how to pass data from my JSF1.1_01 UI to spring Business Layer.Can I directly used my Business object in my Backed Bean or through DTO should I transfer data between the layer? Can one explain me with clear explanation if possible with piece of code and that related websites?

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