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  • Do similar passwords have similar hashes?

    - by SLC
    Our computer system at work requires users to change their password every few weeks, and you cannot have the same password as you had previously. It remembers something like 20 of your last passwords. I discovered most people simply increment a digit at the end of their password, so "thisismypassword1" becomes "thisismypassword2" then 3, 4, 5 etc. Since all of these passwords are stored somewhere, I wondered if there was any weakness in the hashes themselves, for standard hashing algorithms used to store passwords like MD5. Could a hacker increase their chances of brute-forcing the password if they have a list of hashes of similar passwords?

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  • Removing unused selectors in a CSS stylesheet?

    - by Legend
    I've been developing a web app for a few weeks now and ended up with about a 1000 lines. I am sure not all the selectors are being used and am trying to clean it up. At the same time, I don't want to do it manually for obvious reasons. Is there a safe and an efficient way to remove unused selectors? For this, am I supposed to navigate the entire website to let it know which selectors are not being used? (I use javascript to add some selectors so these might not show up until a particular usecase is seen)

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  • Ray intersection and child camera

    - by lutangar
    I've been playing with three.js for few weeks now and got few inconsistencies on ray casting. Here is a simplified version demonstrating one of the bug I encoutered : http://jsfiddle.net/eMrhb/12/ The camera is added to the sphere mesh for further use of TrackBallControl for example. scene.add(mesh); mesh.add(camera); Clicking a few times on the sphere and opening the console, show us none of the expected intersections between the ray and the mesh. Adding the camera to the scene (http://jsfiddle.net/eMrhb/9/), solves the problem: scene.add(mesh); scene.add(camera); But I could use a much more complex hierarchy between my scene objects and the camera to suit my needs. Is this a limitation? If it is, is there any workarounds I could use?

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  • Is memcached a dinosaur in comparison to Redis?

    - by Industrial
    Hi everyone, I have worked quite a bit with memcached the last weeks and just found out about Redis. When I read this part of their readme, I suddenly got a warm, cozy feeling in my stomach: Redis can be used as a memcached on steroids because is as fast as memcached but with a number of features more. Like memcached, Redis also supports setting timeouts to keys so that this key will be automatically removed when a given amount of time passes. This sounds amazing. I'd also found this page with benchmarks: http://www.ruturaj.net/redis-memcached-tokyo-tyrant-mysql-comparison So, honestly - Is memcache really that old dinousaur that is a bad choice from a performance perspective when compared to this newcomer called Redis? I haven't heard lot about Redis previously, thereby the approach for my question!

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  • Can I program Nvidia's CUDA using only Python or do I have to learn C?

    - by Aquateenfan
    I guess the question speaks for itself. I'm interested in doing some serious computations but am not a programmer by trade. I can string enough python together to get done what I want. But can I write a program in python and have the GPU execute it using CUDA? Or do I have to use some mix of python and C? The examples on Klockner's (sp) "pyCUDA" webpage had a mix of both python and C, so I'm not sure what the answer is. If anyone wants to chime in about Opencl, feel free. I heard about this CUDA business only a couple of weeks ago and didn't know you could use your video cards like this. thx

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  • SharePoint - Auto-increment dates in new records?

    - by ACal
    Hello, I have a list that's going to be updated with relatively static data weekly, and I wanted to create a workflow to do this automatically. The only field I'm having trouble with is Start Date. I want the new Start Date to be exactly one week after the previous week's (row's) Start Date, but I can't figure out how to capture this. I can't seem to find an easy way to get the value of the previous row. Now, theoretically, I could just have the workflow run once a week on a given day and use [Today] as the value for the field; however, a requirement is that the list can be populated a few weeks in advance if needed. Thanks in advance for any help you can provide!

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  • C++/CLI value class constraint won't compile. Why?

    - by Simon
    Hello, a few weeks ago a co-worker of mine spent about two hours finding out why this piece of C++/CLI code won't compile with Visual Studio 2008 (I just tested it with Visual Studio 2010... same story). public ref class Test { generic<class T> where T : value class void MyMethod(Nullable<T> nullable) { } }; The compiler says: Error 1 error C3214: 'T' : invalid type argument for generic parameter 'T' of generic 'System::Nullable', does not meet constraint 'System::ValueType ^' C:\Users\Simon\Desktop\Projektdokumentation\GridLayoutPanel\Generics\Generics.cpp 11 1 Generics Adding ValueType will make the code compile. public ref class Test { generic<class T> where T : value class, ValueType void MyMethod(Nullable<T> nullable) { } }; My question is now. Why? What is the difference between value class and ValueType?

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  • How do I implement a DataGrid with an MVVM approach.

    - by Fred
    Hi, I'd like to implement a sort of Addressbook/Contactbook using a Datagrid (or a List) and the MVVM pattern. Something like in Outlook/Thunderbird, where you've a list of your contacts displayed with a 2-3 main fields (name surname for example), and when you double-click a contact, then you get a new modal box that displays all the details of this specific contact. Since a couple of weeks/months, I'm reading a lot of stuff about MVVM pattern on the net, but somehow, I get confused. Until now, I could find any sample like this. (perhaps, I searched wrong?) How could I organize such an application? Thx in advance for your help.

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  • iTune redeem codes: limited to a single version?

    - by Big Papoo
    Hi, I'm wondering if V1.0 generated redeem codes will be usable on a V1.1 version of my app? BTW, I know redeem codes are valid only 4 weeks and I also know that apps downloaded with a redeem code can be upgraded for free as with paid ones. My concern here is just: do unused redeem codes become invalid when a new version of my app will be available on the store? Apple's doc is not clear about this point. Did someone experience this yet ? Thx. --GQ.

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  • Oracle SQL: Query results from previous X isoweeks () (where X might be > 52)

    - by tommy-o-dell
    How could I adapt this query to show the previous 61 weeks? (still exlcluding the current week). My query currently shows me the total weekly sales for 2010 grouped by ISO Week and ISO Year (exlcuding the current week). select to_char(order_date,'IYYY') as iso_year, to_char(order_date,'IW') as iso_week, sum(sale_amount) from orders where to_char(order_date,'IW') <> to_char(SYSDATE) and to_char(order_date,'IYYY') = 2010 group by to_char(order_date,'IYYY') to_char(order_date,'IW') I realize I could probably just omit the "2010" requirement, order by desc and limit results to a certain bnumber of rows. But that just doesn't seem right! Much appreciate any help pointing me in the right direction!

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  • What are the possible reasons for App::import() not working?

    - by Julien Poulin
    I'm trying to implement a simple way to manage static pages in CakePhp, as described in this article. The problem I'm facing is that App::import() doesn't seem to import the required class in the routes.php file. The code is the following: App::import('Core','ClassRegistry'); $page = new StaticPage(); $slugs = $page->find('list', array( 'fields' => array('StaticPage.slug'), 'order' => 'StaticPage.slug DESC' )); I'm getting the error: Fatal error: Class 'StaticPage' not found in ... I just started CakePhp a few weeks ago and I guess I'm missing a simple thing here... I'm using CakePhp 1.3 and Php 5.2.42.

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  • Help needed to write a LINQ with GROUP bY(C#3.0)

    - by Newbie
    I have a datatable whose structure is as under Week Dates Key_Factors Factor_Values --- ----- ----------- ------------- 1 29/12/2000 Factor_1 19.20 1 29/12/2000 Factor_2 20.67 1 29/12/2000 Factor_3 10 2 21/12/2007 Factor_1 20.54 2 21/12/2007 Factor_4 21.70 I have a Object model like WeekNumber(int) Dates(Datetime) FactorDictionary (Dictionary<string,double>) I am trying to populate the data from DataTable to my Object Model whose needed output is as under Desired Output ---------------- WeekNumber : 1 Dates : 29/12/2000 FactorDictionary: Key_Factors: Factor_1 Factor_Values:19.20 Key_Factors: Factor_2 Factor_Values:20.67 Key_Factors: Factor_3 Factor_Values:10 WeekNumber : 2 Dates : 21/12/2007 FactorDictionary: Key_Factors: Factor_1 Factor_Values:20.54 Key_Factors: Factor_4 Factor_Values:21.70 i.e. The result is grouped by weeks. Can I achieve the same by using LINQ. I am using C#(3.0) with framework(3.5) Thanks

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  • Apache Modrewrite & 301 redirect- Dynamic URLs with characters.

    - by Ben Chesters
    I've been trying for weeks, literally, to rename these URLs and also ensure the old one is 301 redirected to the new one: www.example.com/?mod=11&p=215 - www.example.com/clean-url-section www.example.com/?mod=96&tab=6 - www.example.com/clean-url-section-2 Does anyone have any idea why I am having no luck, I got 500 server errors or nothing at all! Is it because of the question marks and characters? I'd be grateful for any help. I have tried this (below) and it seems to be redirecting to the http:// www.example.com/new-page (this page doesn't exist, as I only want it to rename the page BUT use a 301 so that search engines continue you to value it) RewriteCond %{query_string} mod=96&tab=6 RewriteRule (.*) http:// www. example.com/new-page? [R=301,L] Scratching my head!

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  • Tables relationship in Cakephp

    - by kwokwai
    Hi all, I am new to Models structure in Cakephp. A few weeks ago I came across a tutorial in which the author got three tables in Database: Table A: {ID, Description, IsActive} Table B: {ID, TableA_ID, Description, CreationDate, ModifiedDate} Table A_B: {ID, TableA_ID, TableB_ID} The author of the tutorial said that the third table (Table A_B) is needed to run in CakePHP. I don't understand. Is there any specific documentation in CakePHP that I can refer to? I know there is a CookBook in Cakephp web site, but I couldn't find the relevant infromation.

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  • RAD - Websphere Application server won't start

    - by Caroline
    I am having issues with RAD7. My server will not start for me today. I am working from home and connected to the VPN. Everything works except my server in RAD. It worked fine yesterday in work and had previously worked when I was at home but that was a few weeks ago. Are there any settings that I should look out for? I have disabled my proxy settings in RAD and turned off everything in my firewall. I can ping all the DBs that the server is connecting to. I have even removed all the projects from the server and it will still not start. It keeps trying and then times out after 300s. Any suggestions?

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  • Missing Status Bar in Visual Studio?

    - by Marcel
    Note: This question and answer is a full copy from Kelly Brownsbergers Blog. I do post it as a convenience to others. From time to time, my status bar disappears. I used to believe this was due to a botched install or add-in. I recently upgraded to Team System Test Edition, and my status bar again disappeared. For the last few weeks I’ve been trying to figure out a time to do a full reinstall. To not take rep for this, I have marked it communitiy wiki.

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  • rails gem share_counts GET method on object?

    - by jaqbyte
    created the first rails app! excinting! for two weeks now I did Zombie, rubymonk etc. I love it! I used scaffold form url:string and included the gem share_counts. rails c: f = form.first ShareCounts.twitter f.url works! but... I have trouble to write the controller and the view! For you experienced railies this is probably a silly question, and probably only 5 lines of code, but for me thats a big step learning RoR! I am very thankful if someone could help how I can show the count next to the "url" field. Thank you so much!!! joh

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  • How to make schema and code dynamic?

    - by Jonarch
    I want to make my database schema and application code as dynamic as possible to handle "unknown" use cases and changes. Developing in PHP and MySQL. Twice now I have had to change my entire schema including table and column names and this means the developers have to go back to the application code and modify all the SQL queries and table/columns names. So to prevent this I want to if just like we do on pages where we have page content, title bar etc dynamic like a %variable%, can we do it for the schema and maybe even for the php code functions and classes somehow? It takes weeks to re-do all changes like this vs if it is dynamic it can be done in under a day.

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  • Referencing text input fields in CKEditor dialogs

    - by rt-uk
    Hi, I've been playing around with this for a couple of weeks now with no success... In a CKEditor dialog, text input fields are renamed with a unique number - e.g. id: 'txtUrl' will become something like id='27_textinput'. How do I reference this? // I feel it should be something like: var myfield = CKEDITOR.instances.myElement.document.$.body.getId('txtUrl'); // or maybe: var myfield = CKEDITOR.dialog.getContentElement('info','txtUrl'); // and then: myfield.value = 'myvalue'; But these don't work. Please help! Thanks in advance, R

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  • Interview Programming Questions - In house Exam

    - by David McGraw
    I have a company that would like to bring me in to serve me an hour long exam. No resources other than a pencil and paper. I really couldn't get any sort of feedback on the type of exam (implementation or generic) beside that it would test a few specific areas. Have you done anything like this? What sort of questions did they ask? What's a good way to prepare? I'll probably go in a couple weeks before school starts back up. A time sensitive exam structure is a weak point for me, so what should I absolutely focus down on? If they like the exam, that's when I'll get a face-to-face meeting. An advance thanks goes to everybody who provide their time.

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  • google search rankings and trends api

    - by Drakkhen
    I'm looking to find an api or program or interface to get the following information. I would like to see the amount of times a particular search term was used and its /weekly/monthly/yearly breakdown along with its rank in a particular page. I've found googlesearchpositionfinder.com and google.com/trends but i have 5000 terms to search for by hand is not happening. I've also found www.juiceanalytics.com/openjuice/programmatic-google-trends-api but it doesn't allow me to do a break down for a period of 2 years. Basically i'm trying to create a ranking of search phrases, the weeks(period) they were more popular and how a particular site(e.g urban dictionary) showed up in googles search rankings for the terms.

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  • Is there a best practice for maintaining history in a database?

    - by Pete
    I don't do database work that often so this is totally unfamiliar territory for me. I have a table with a bunch of records that users can update. However, I now want to keep a history of their changes just in case they want to rollback. Rollback in this case is not the db rollback but more like revert changes two weeks later when they realized that they made a mistake. The distinction being that I can't have a transaction do the job. Is the current practice to use a separate table, or just a flag in the current table? It's a small database, 5 tables each with < 6 columns, < 1000 rows total.

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  • frequently merge changes between branch and trunk?

    - by John
    My team and I are using svn branches for the first time. Before, we use to work only from the trunk. Over the past 2 weeks, we've been refactoring and developing new code against our branch. But during that time, another developer has been making bug fixes to code in the trunk and deploying it to the production server. We would like to frequently "update" our branch with changes from the trunk to make sure we get the latest fixes. But the problem is that we're making drastic changes to our branch, and many files have been renamed. I have a feeling every "update" we do on our branch that takes changes from trunk will cause a conflict, unless we some how get subversion to recognise that fileA.html in trunk is really fileB.html in branch. Am I using subversion branches correctly? Am I using the word "update" correctly? Are frequent "updates" in branch advisable?

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  • Dynamic Dropdown menu through php

    - by Code_Ed_Student
    I visited a website a few weeks ago and came across a dynamic drop down menu. I came across a functionality that I am now trying to replicate but do not know how. In the dropdown you picked the desired number of cars and then it reiterated input fields according to the number of cars chosen. I believe this was done through javascript and a loop was involved. Is there a term for this action or way to display things? Also an example of how to accomplish something similar would help?

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  • Howto get iframe linking to internal document source using javascript/jQuery?

    - by Tom
    Hi there, I have an iframe with id "appframe", the source is page.html and it's on the same server. I want to get the source of the page using jQuery. alert($("#appframe").contents().find("html").html()); returns <head></head><body></body> even though the document does not contain those tags, it only contains "Default page", so that is exactly what it should return. Any idea how to get the right source script of the whole document using jQuery? Eg. if the document would be "test" then that is exactly what it should return. Please note: I did ask this before a few weeks ago. Unfortunately, I got no solving answer. Because of my lower reputation (~85), I can not request a bounty... This doesn't make much sense to me. Anyway, it forced me to repost this question.

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