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• Winforms role based security limitations

  - by muhan

  I'm implementing role based security using Microsoft's membership and role provider. The theoretical problem I'm having is that you implement a specific role on a method such as: [PrincipalPermissionAttribute(SecurityAction.Demand, Role="Supervisor")] private void someMethod() {} What if at some point down the road, I don't want Supervisors to…

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• Hibernate limitations on using variables in queries

  - by sammichy

  I had asked the following question I have the following table structure for a table Player Table Player { Long playerID; Long points; Long rank; } Assuming that the playerID and the points have valid values, can I update the rank for all the players based on the number of points in a single query? If two people have the same number…

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• Practical size limitations for RDBMS

  - by grenade

  I am working on a project that must store very large datasets and associated reference data. I have never come across a project that required tables quite this large. I have proved that at least one development environment cannot cope at the database tier with the processing required by the complex queries against views that the application layer…

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• ASP.NET 4 URL limitations: why URL cannot contain any & character

  - by stacker

  http://site.com/page&character This URL will return the following error: A potentially dangerous Request.Path value was detected from the client (&). I'm already put this in web.config: <system.web> <httpRuntime requestValidationMode="2.0" /> <pages validateRequest="false"> ... How can I fix this error?

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• limitations of xpath to distinguish and locate web elements on page

  - by wefwgeweg

  are there any alternatives to Xpath ? need to locate and extract specific element's texts for web scraping project. xpath seem pretty limited against layout changes on web pages. slight shuffle, and xpath no longer works. also different browsers have different Xpaths as i discovered. Firefox automatically adds tbody after table, while IE doesn't…

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• archiving strategies and limitations of data in a table

  - by Samuel

  Environment: Jboss, Mysql, JPA, Hibernate Our web application will be catering to a large amount of users (~ 1,000,000) and there are a lots of child table where user specific data are stored (e.g. personal, health, forum contributions ...). What would be the best practice to archive user & user specific information. [a] Would it be wise…

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• I am trying to build a list of limitations of all graph algorithms

  - by Jack

  Single Source shortest Path Dijkstra's - directed and undirected - works only for positive edge weights - cycles ?? Bellman Ford - directed - no cycles should exist All source shortest path Floyd Warshall - no info Minimum Spanning Tree ( no info about edge weights or nature of graph or cycles) Kruskal's Prim's - undirected …

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• Unusual heap size limitations in VS2003 C++

  - by Shane MacLaughlin

  I have a C++ app that uses large arrays of data, and have noticed while testing that it is running out of memory, while there is still plenty of memory available. I have reduced the code to a sample test case as follows; void MemTest() { size_t Size = 500*1024*1024; // 512mb if (Size > _HEAP_MAXREQ) …

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• Disk IO Performance Limitations based on numbers of folders/files

  - by Josh

  I have an application where users are allowed to upload images to the server. Our Web Server is a windows 2008 server and we have a site (images.mysite.com) that points to a shared drive on a unix box. The code used to do the uploading is C# 3.5. The system currently supports a workflow where after a threshold is met a…

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• What are the Limitations for Connecting to an Access Query in Excel

  - by thornomad

  I have an Access 2007 database that has a number of tables, some are fairly large (100,000+ records); I have created a union query to pull some of the same types of data from multiple tables into one large query for pivot table manipulation and reporting. For example: SELECT Language FROM Table1 UNION ALL SELECT…

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• ASP.NET 4 URL limitations: why URL cannot contain any %3f characters

  - by stacker

  http://site.com/page%3fcharacter This URL will return the following error: Illegal characters in path. I'm already put this in web.config: <system.web> <httpRuntime requestValidationMode="2.0" requestPathInvalidCharacters="" /> <pages validateRequest="false"> ... How can I fix this…

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• Where are tables in Mnesia located?

  - by Sanoj

  I try to compare Mnesia with more traditional databases. As I understand it tables in Mnesia can be located to: ram_copies - tables are stored in RAM only, so no durability as in ACID. disc_copies - tables are located on disc and a copy is located in RAM, so the table can not be bigger than the available…

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• mysql: how to set max_allowed_packet for shared hosting?

  - by Sadi

  Hello, I need to set (increase) max_allowed_packet. But the problem is I am using a shared hosting. So, I can not access the .ini or .cnf file. Also I can not use the SET command. How can I am able to set a value (actually increase) for the max_allowed_packet, without asking the hosting support. I have no…

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• JSON limitation?

  - by thedp

  Hello, I would like to know if JSON with AJAX has a limitation to the amount of data an outgoing and returning parameter can carry? I would like to be able to send and return from the server a file with 10,000 lines, as a string. How should I achieve this task? Will a single parameter will be able to…

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• Howto: Limit access to my facebook appliation

  - by Simon Schmincke

  Hey, I developed an application for my masters class, that I want to limit ONLY to my masters class. Can I somehow limit the access? Or even connect the limit to the users in a group? Thanks Simon

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• Why no switch on pointers?

  - by meeselet

  For instance: #include <stdio.h> void why_cant_we_switch_him(void *ptr) { switch (ptr) { case NULL: printf("NULL!\n"); break; default: printf("%p!\n", ptr); break; } } int main(void) { void *foo = "toast"; …

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• Is there a limitation on the number of sockets being used in any application?

  - by Padmanaban

  Is there a limitation on the number of sockets being used in any application? In our application for record locking purpose we are handling all the connected users in a middle layer which sometimes get crashed when more number of users are connected to that.

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• Oracle - Determine maximum supported size for regular expression

  - by FrustratedWithFormsDesigner

  I have a regular expression that throws ORA-12733, "regular expression is too long". How do I determine what the maximum supported size is? FYI: the offending regex is 892 characters. It's a generated regex, so I could change how I generate and execute it, but I would like to know what the…

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• iPhone/iPod & iPad - Limitatios about Universal applications

  - by Cesar

  Are there any limitation in writing universal application for iPhone and iPad ? (or the choice it's only about the code re-usability/design )

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• What doesn't MySQL do? [closed]

  - by sean riley

  When using MySQL 5.1 Enterprise after years of using other database products like Sybase, Infomix, DB2; I run into things that MySQL just doesn't do. For example, it can only generate an EXPLAIN query plan for SELECT queries. What are the other things I should watch out for?

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• Is there any Limitation on loading native google map in android?

  - by captainpirate

  I have the following code to load native google map app into my project: final Intent intent = new Intent(Intent.ACTION_VIEW, Uri .parse("http://maps.google.com/maps?" + "saddr=43.0054446,-87.9678884" +…

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• Is there a limitation to the length of the query in mysql?

  - by Bakhtiyor

  I am asking this question because I need to know this limitation as I am generating SELECT query in my PHP script and the part of WHERE in this query is generated inside the loop. Precisely it looks like this $query="SELECT field_names FROM table_name WHERE "; …

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• What are the app file size limitations for different smartphone OSes & carriers?

  - by Nick Gotch

  I know the iPhone App Store limits how large an app can be in general and there are also limitations with AT&T over the size it can be to transmit over a data plan vs WiFi. I have no idea what, if any, these limits are for Android apps and what I'm finding…

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• Quels sont vos astuces pour passer outre les limitations des EDI ? Comme marquer des arrêts dans un code volumineux sans points d'arrêt

  Quels sont vos trucs et astuces pour passer outre les limitations des EDI ? Comme marquer des arrêts dans un code volumineux sans points d'arrêt Les applications contenant des fichiers de source avec des lignes de code volumineux sont très souvent sujet à…

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• What are the advantages and limitations of using Qt for game development? [on hold]

  - by Gagege

  I know there is already a thread asking for example 3d games written using Qt. What I'd like to have a discussion about is whether or not Qt is a good framework for game development. In my experience Qt is a joy to work with and thanks to QML and QML/3d…

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