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• Rails: validation that spans multiple models, where to put it?

  - by randombits

  I have a custom validation method that is exactly the same for two or more models. Where's the best place to put this validation method so that both models can access it and keep things DRY? If the validation fails, I also want to use errors.add_to_base, so wherever this method is put, I should be able to accommodate for that.

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• Equivalent of PHP "echo something; exit();" with Python/Django?

  - by Infinity

  Sometimes the best way to debug something is to print some stuff to the page, and exit(), how can I do this in a Python/Django site? e.g. in PHP: echo $var; exit(); Thanks

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• How do I create a GUI programme most easily in C?

  - by user198729

  I'm a windows XP user, with not much experience in c developing. What's the best way to create GUI application in C?

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• Function equivalent to sprintf() with maximum number of characters to be copied?

  - by Tommy

  function(char* name) { char sql[50]; sprintf(sql, "select %s;", name); } What's the best way to make sure only 50 chars of name are copied to sql in the case name is larger than what sql can hold? (sprintf with a N parameter?) Thank You.

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• How to get ordered qty of product in front-end?

  - by alex

  I display a best-sell list in front-end,Now I also want to show the QTY that how many already sell for this product,How do I get the QTY ? And if the product is a "Configurable Product",How do I get the QTY ?

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• Sending complex arguments to a java program

  - by jax

  I need to supply a binary license file to a java program. What is the best way to do this? The data will change all the time so I don't want to have to write a file and then read it back every time. The Data is coming from a PHP page

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• How can I have a submit button (in grails) update a specific target frame?

  - by pennstatephil

  I'd like to use something like the "update=" parameter of a <g:remoteLink> with a <g:actionSubmit>, so that when the submit button is clicked, it will update a specific target. What's the best way to accomplish this?

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• Will the Windows service be 64-bit if installed from 64-bit process?

  - by nhaa123

  Hi, Just wondering, if I install a Windows service from 64-bit process (service code embedded in the process), is the service itself Win32 service or can services be 64-bit as well? I need to know this since my service would inject code to Win32-process, so due to WOW64 restrictions the service-process itself cannot be 64-bit. Best regards,…

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• request: compile c++ source for 64bit windows

  - by Kellyh

  Hi, First of all, i hope i post in the right section. I came across this best media convertor open source software. It works fine and the most convenience thing about this software is the context menu however the context menu isn't working on Windows 7 64bit. Since i have no knowledge with c++, Can you one here generously help me compile it…

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• unique substrings using suffix tree

  - by user1708762

  For a given string S of length n- Optimal algorithm for finding all unique substrings of S can't be less than O(n^2). So, the best algorithm will give us the complexity of O(n^2). As per what I have read, this can be implemented by creating suffix tree for S. The suffix tree for S can be created in O(n) time. Now, my question is- How can…

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• Stuck. I need some VBA code to insert double-quotes around strings in each cell in an excel range.

  - by cmm

  I'm familiar with VB.NET, but VBA in excel has me stumped. With my best attempt, I get a "Type mismatch" error: Sub AddQuotes() For Each x In Range("List").Cells x.Text = "*" * " & x.text & " & "*" Next End Sub

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• Organize address cache

  - by Orsol

  Hi, I need to organize cache in mySql database for address - coordinates. What is the best practice to store address? Do i need to compress address string or use it as is? edit: Ok, let's I reassert my question. How to store long (up to 512) string in database if I need to search by exactly this string in future.

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• Java Programing Requirments

  - by hosseinsinohe

  Hi All I am a C sharp Programmer.I Want Learn Java to Implement My Windows Application.But i Don't know What IDE and What Tools Can Help me. Please Help me to Choose Best PlatForm And IDE and Other Tools.

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• Database Design Question

  - by Soo

  Ok SO, I have a user table and want to define groups of users together. The best solution I have for this is to create three database tables as follows: UserTable user_id user_name UserGroupLink group_id member_id GroupInfo group_id group_name This method keeps the member and group information separate. This is just my way of…

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• Showing categories and subcategories in a menu

  - by jasmine

  What is the best way for Showing categories and subcategories in a menu with php? I have found a function here, But I cant understand the logic of $has_childs . Thanks in advance

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• Learning C++ on Linux or Windows?

  - by ReDAeR

  Hi, Since you 'should' learn C/C++ and as part of 'learn as much languages as possible', i decided to learn C++ in depth. My OS is Windows and my question is should i re-install Linux as a dual boot to learn C++ on Linux? Do i miss something if I develop in C++ only on the Windows platform? (possible duplicate:…

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• How to track how many times an iPhone app is opened?

  - by Jason

  I am building an iphone app and would like to keep track of how many times it has been opened so that I can prompt the user to do certain actions after it has been opened X number of times. I have thought about storing a variable in Core Data which I update every time it is opened, but this seems like a waste since…

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• C++: Assign L"" string to WCHAR?

  - by Rosarch

  I have a WCHAR: WCHAR foo[200]; I want to copy values into it: if (condition) { foo = L"bar"; } else { foo = L"odp"; } What is the best way to do this?

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• haskell check for user input errors

  - by snorlaks

  Hello. Im writing app in haskell and I would like to know that is the best way to check if users input is ok for example is it int when Im asking for int or if its date when asking for well formed date ? Thanks for help

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• Script to parse emails for attachments

  - by Swanny

  I am looking for a way to monitor a Linux mbox email account, when an email arrives I would like to download an attachment from the email and save the attachment (CSV file) so that it may be used by a PHP script. What would be the best way of going about this? I have looked at PHP's IMAP functions but this does not…

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• How to share an array in Python with a C++ Program?

  - by mellort

  I two programs running, one in Python and one in C++, and I need to share a two-dimensional array (just of decimal numbers) between them. I am currently looking into serialization, but pickle is python-specific, unfortunately. What is the best way to do this? Thanks

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• [Linux] Incremental search on command line?

  - by florianbw

  I'd like to write small scripts which feature incremental search (find-as-you-type) on the command line. Use case: I have my mobile phone connected via USB, Using gammu --sendsms TEXT I can write text messages. I have the phonebook as CSV, and want to search-as-i-type on that. What's the easiest/best way to do…

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• c#: why can't i do a Messagebox.Show(some_int) ?

  - by every_answer_gets_a_point

  MessageBox.Show((some_string.Length).ToString); i am getting two errors for this: Error 1 The best overloaded method match for 'System.Windows.Forms.MessageBox.Show(string)' Error 2 Argument '1': cannot convert from 'method group' to 'string' can someone tell me how to do this correctly?

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• How do I convert a list to a tuple in Haskell?

  - by Alex

  How can I best convert a list to a tuple in Haskell: [1,2,3,4,5,6] -> (1,2,3,4,5,6)

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• Communicating Between .NET Programs

  - by IronManIngellis

  I wanted to set up a simple data communication between two C# applications, and I'm not sure what the best method is in doing so. I've previously used Java Sockets and ServerSockets to get the job done, but I'm new to C#, so I've come for advice :) It's going to be two way communication with two clients…

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