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  • C# Random generation

    - by Betamoo
    I have just passed this article online: C# Corner and C# Corner and his article (a software developer with over 13 years of experience) recommended using System.Random as follows: private int RandomNumber(int min, int max) { Random random = new Random(); return random.Next(min, max); } Isn't that would give him the same number every time ?? Edit: So my question will become: How does Random choose its seed? a constant or current time value? Thanks

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  • Unique text field in MySQL and php

    - by Jonathan
    I've created a salt using; md5(rand(0,10000000)); (there is probably a better way?) There doesn't seem to be possible to make a text field unique in MYSQL. So how do I check if the salt has already been used for a previous user? Or should I generate the salt based on the current date/time? as it is impossible for 2 users to register at exactly the same time correct?

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  • SQL Server- PIVOT table. transform row into columns

    - by Matt
    I am trying to convert rows into columns. here is my query SELECT M.urn, M.eventdate, M.eventlocation, M.eventroom, M.eventbed, N.time FROM admpatevents M INNER JOIN admpattransferindex N ON M.urn = N.urn AND M.eventseqno = N.eventseqno AND M.eventdate = N.eventdate WHERE M.urn = 'F1002754364' AND M.eventcode = 'TFRADMIN' Current result URN Date Location Room Bed Time F1002754364 20121101 EDEXPRESS 4-152 02 0724 F1002754364 20121101 CARDSURG 3-110 02 1455 F1002754364 20121102 CHEST UNIT 6-129-GL04 1757 required result F1002754364 20121101 EDEXPRESS 4-152 02 0724 20121101 CARDSURG 3-110 02 1455 20121102 CHEST UNIT 6-129-GL 04 1757 Thanks for your help.

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  • Stop $_POST from having the same value when I refresh

    - by Cortopasta
    When a vote value is changed, the form POSTs the change, then refreshes the page. This is called on the top of the page upon load: if (isset($_POST['q'.$question_id])) { $user->updateQuestionVotes($question_id, $_POST['q'.$question_id]); } Why does it update every time I refresh after the first time? Do I need to unset it somehow?

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  • How to blit() in android?

    - by Lo'oris
    I'm used to handle graphics with old-school libraries (allegro, GD, pygame), where if I want to copy a part of a bitmap into another... I just use blit. I'm trying to figure out how to do that in android, and I got very confused. So... we have these Canvas that are write-only, and Bitmaps that are read-only? It seems too stupid to be real, there must be something I'm missing, but I really can't figure it out.

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  • How do I run an iPad emulator ?

    - by John
    I have no real need for the entire SDK, my project involves mainly JS and CSS on an ePub structure. My fiend lend me his MacBook on which I'm typing now. I can create everything on a PC box, import to the MacBook and than test it on the emulator. So - how do I install an iPad emulator on a MacBook ? Thank you for your assistance.

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  • Improve SQL strategy - denormalize in object-children-images case

    - by fesja
    Hi, I have a Tour object which has many Place objects. For the list of tours, I want to show some info of the tour, the number of places of the tour, and three Place's images. Right one my SQL queries are (i'm using Doctrine with Symfony on MySQL) get Tour get Tour 1 places get Tour 2 places get Tour 3 places ... get Tour n places If I have a three Tour list, it's not so bad; but I'm sure it can get bad if I do a 10-20 tour-list. So, thinking on how to improve the queries I've thought of several measures: Having a place count cache Storing the urls of three images on a new tour field. The problem with 2. is that if I change the image, I have to check all the tours to update that image for another one. What solution do you think is best to scale the system in a near future? Any other suggestion. thanks!

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  • Open Source projects that use agile methods or have tried them

    - by Patrick Cornelissen
    I'm preparing a short talk for a conference in august and I'm looking for open source projects that are using agile methods internally or have tried them in the past. My goal is to talk about the things that work well and what won't work and promote the agile methods a little bit, because I think certain agile techniques are a good fit, but don't seem to be that common in real development. So does anyone know projects that have tried agile methods and techniques before? I'd like to contact them for a few questions.

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  • How to generate dynamic Timers

    - by Jeeva
    I'm developing a web based game application using flex. I'm placing images dynamically inside a canvas . Whenever i place an image it should change it state after a period of time. For example after 2 mins it should change it state. The time has to be calculated for each image after i place the image. How shall i handle this.

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  • Use of malloc() and free() in C++

    - by Matt H
    Is there any reason to use malloc and free in C++ over their more modern counterparts? Occasionally I see this, and I can't see why some people do it. Are there any advantages/disadvantage, or is there no real difference, except that it's just better to use C++ constructs in C++?

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  • PHP/MySQL - updateing 2 tables in one request

    - by Phil Jackson
    Morning, I want to learn more about sql and I'm wanting to update to tables; $query3 = "INSERT INTO `$table1`, `$table2` ($table1.DISPLAY_NAME, $table1.EMAIL_ACCOUNT, $table2.DISPLAY_NAME, $table2.EMAIL_ACCOUNT) values ('" . DISPLAY_NAME . "', '" . EMAIL_ADDRESS . "', '" . $get['rn'] . "', '" . $email . "')"; could some one point me in the right direction on how I would go about this? current error is You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ' contacts_ACT_Web_Designs (contacts_E_Jackson.DISPLAY_NAME, contacts_E_Jackson' at line 1 regards, phil

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  • Exceptions from WCF

    - by adrianm
    What exceptions can be thrown from a WCF client? I usually catch CommunicationFaultedException, CommunicationException, TimoutException and some other but from time to time new ones occur, e.g. most recently QuotaExceededException There is no common base to catch (except Exception) so does anyone have a complete list?

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  • Is there a tool to generate MVC code in C#?

    - by Rity
    I was working on a project with a colleague and went out for lunch one day. Given that we only spent a few days doing design and no coding, I was surprised to find out that after lunch, he had over 40 files completed (various classes, interfaces, DTOs, etc). He told me he is just a fast typist but I need to know the real deal. He hasn't been able to sustain that kind of productivity just the initial skeletal code but still, any ideas how he did this?

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  • Strategies on synching data and caching data between iphone and server

    - by Blankman
    Say I have a TODO list iphone app, that can be edited/viewed from both a web application and the iphone application. When on the iphone, when a user views all his todo lists, or sub-items, I would think that each time the user views a particular list it shouldn't be hitting the web applications API every-time, but rather cache locally the values and only hit the web when things change. What strategies are there for this type of scenerio?

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  • Are there any Visual Studio add-ins for true 'smart tabs'?

    - by Eye of Hell
    Hello. 'Smart Tabs' concept allows to automatically insert tab character for block indentation and space characters for in-block formatting. It's described here. Unfortunately, Visual Studio's 'smart tabs' option in text editor settings just indents text on enter press. Same name, completely different and near useless thing :). So, maybe someone knows of a visual studio addin that can change how 'tab' key work so it will insert tab characters and space characters according to rules mentioned above? Any hints are welcome. Update: I need it for C++. According to comments, ReSharper can do something like this, but only for Basic and C#.

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  • How to learn open source library API without good documentation

    - by Turtle
    I am recently working on the open source library openmetaverse which is designed as an open source substitution of second life viewer. I think the problem is that it is not well documented. Sometimes, I just misunderstand the API when I really used it in real program which is very annoying because sometimes you need to write many code. But how to make sure the API just acts the way you expected? So what is your way to learn new API without good documentation?

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  • Oracle spatial search within distance

    - by KA_lin
    I have the following table Cities: ID(int),City(char),latitude(float),longitude(float). Now based on a user`s longitude(ex:44.8) and latitude(ex:46.3) I want to search for all the cities near him within 100 miles/KM. I have found some examples but don`t know how to adapt them to my case select * from GEO.Cities a where SDO_WITHIN_DISTANCE([I don`t know], MDSYS.SDO_GEOMETRY(2001, 8307, MDSYS.SDO_POINT_TYPE(44.8,46.3, NULL) ,NULL, NULL), 'distance = 1000') = 'TRUE'; Any help would be appreciated. P.S: If it is possible to have the distance and to be sorted P.P.S: I want to do it in this way due to performance issues, I have done this in this way http://www.scribd.com/doc/2569355/Geo-Distance-Search-with-MySQL but it takes too long...

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  • How to ORDER BY non-column field?

    - by Phil Bolduc
    I am trying to create an Entity SQL that is a union of two sub-queries. (SELECT VALUE DISTINCT ROW(e.ColumnA, e.ColumnB, 1 AS Rank) FROM Context.Entity AS E WHERE ...) UNION ALL (SELECT VALUE DISTINCT ROW(e.ColumnA, e.ColumnB, 2 AS Rank) FROM Context.Entity AS E WHERE ...) ORDER BY *??* LIMIT 50 I have tried: ORDER BY Rank and ORDER BY e.Rank but I keep getting: System.Data.EntitySqlException: The query syntax is not valid. Near keyword 'ORDER' I do not think it is a problem with the Rank column. I do think it is how I am trying to apply an order by to two different esql statements joined by union all. Could someone suggest: How to apply a ORDER BY to this kind of UNION/UNION ALL statment How to order by the non-entity column expression. Thanks.

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  • windows media player command arguments

    - by TonyNeallon
    Hi There, Is it possible to launch a mp3 or wmv file using windows media player at a specified time offset? e.g I watched 10 seconds of video and closed it. the next time my app launches the video it starts playing a timeline of 10 seconds. The videos and mp3s are being launched in windows mobile 5 and 6 apps.

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  • Use C function in C++ program; "multiply-defined" error

    - by eom
    I am trying to use this code for the Porter stemming algorithm in a C++ program I've already written. I followed the instructions near the end of the file for using the code as a separate module. I created a file, stem.c, that ends after the definition and has extern int stem(char * p, int i, int j) ... It worked fine in Xcode but it does not work for me on Unix with gcc 4.1.1--strange because usually I have no problem moving between the two. I get the error ld: fatal: symbol `stem(char*, int, int)' is multiply-defined: (file /var/tmp//ccrWWlnb.o type=FUNC; file /var/tmp//cc6rUXka.o type=FUNC); ld: fatal: File processing errors. No output written to cluster I've looked online and it seems like there are many things I could have wrong, but I'm not sure what combination of a header file, extern "C", etc. would work.

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  • Windows 7 Icons, Buttons, and Tabs corrupted...Professional 32-bit

    - by xhyperx
    The other day, about two or three ago, I was simply typing in a Microsoft Word document when my screen froze. After a few moments, it went black...I thought it was my vid hardware (dual nVidia 9800 GTs). Anyway, I did a hard reboot, and chose to Start Normally. The system blue screened telling me there was a failure in the Memory Manager. So then I thought maybe a RAM failure or vid memory failure. I attempted reboot again, this time I got presented with the option to repair windows...so I went with that. The repair app finished and did an auto reboot. This time I got all the way back to my desktop where in a matter of a about 30 seconds, the system blue screened again and pointed to the Memory Manager as the area of cause. Again I rebooted, the repair thingy came up again and I allowed it to do its thing. Deciding if the same failure occured I'd begin pulling hardware to see at what point I may have found the possibly defective party. However, this time it rebooted, I got back to desktop and no crash. All looked well, untill I looked at the baloon messages when hovering over the System Bar icons. Also when I opened any of my browsers, the tabs had no text, and any window that pops up that has regular buttons (OK, Cancel, etc., etc.) looks weird. The buttons are really really long and have no text. So it seems like the system is once again running smoothly, however something has gotten corrupted.. something relating to drawing basic windows user interface objects. Help...all ideas are respected and appreciated. Have a great day everyone!

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  • Which conventions, events, etc. should I look into attending?

    - by perlox
    I am a student programmer and relatively new to the industry. Once I get out into the real world and have money to blow, which events/conventions/conferences/etc. should I look into attending? Which do you consider a must-attend-at-least-once-in-your-life-as-a-developer type of event? Just to clarify, any language, company, size, are acceptable. I'm mostly looking to generate a list of highly regarded conferences for a variety of different fields/interests.

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  • Activity visible size

    - by Tsimmi
    Hi! How can I know the visible size of my activity? I'm trying to get the Activity real size, not the height and width from getHeight() and getWidth(), witch gives me the screen full size. Thanks

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