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• Learning Python coming from PHP

  - by Coronatus

  Community wiki so don't vote to close, kthxbai. My dynamic language experience is solely PHP. I want to learn Python now to broaden my career opportunities and just because I like programming. :) When learning Java, I used a site (lost the URL/real name now), something like "Java for PHP developers" that had all on one side of the page the PHP code, and on the other side the Java code to do the same thing. Is there a website like that for Python? Any other recommendations/advice? Thanks Edit: I have no votes left today, but I'll up-vote good answers tomorrow :)

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• C++ Testing framework integrated with Eclipse

  - by Mike

  I'm writing a C++ unit testing framework and I would like it if it could be integrated with Eclipse CDT. In other testing suites that work with Eclipse, JUnit for example, the user is provided a graphical list of all test cases and their results. Something like this would be the ideal. I'm just getting into this, so I need some advice on getting started. There are two approaches I see Use an existing Eclipse testing plugin (such as JUnit) and make the framework return output in the same format as the plugin's input. Write a plugin from scratch that can work with my framework (seems like it would take a lot of time) Thoughts appreciated

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• Which Ipod touch generation should I buy? 2nd or 3rd?

  - by kukabunga

  I want to create games for Iphone/Ipod touch. Unfortunately I don't have a lot of money so I can buy only one device. Ipod is cheaper than Iphone, so I decided to bought Ipod touch. But I am afraid of buying 3rd generation - because it has more memory, more faster CPU, etc. And I think if I post my app on appstore - people with 2nd generation Ipod might have trouble with my app (because I was testing it on 3rd generation). But on the other hand - I am planning to create 3d/cpu demanding game - and it would be easy for me to implement it on device with more calculation power... What should I do in this situation? Any advice is appreciate.

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• Should I always call Page.IsValid in ASP.NET WebForms C#?

  - by mkelley33

  I know to never trust user input, since undesirable input could be compromise the application's integrity in some way, be it accidental or intentional; however, is there a case for calling Page.IsValid even when no validation controls are on the page (again, I know its bad practice to be trusting user input by omitting validation)? Does Page.IsValid perform any other kinds of validation? I looked at MSDN, and the docs seem to suggest that Page.IsValid is only effective if there are validation controls on the page, or the Page.Validate method has been called. A friend of mine suggested that I always check Page.IsValid in the button click handlers every time even if there are no validation controls or explicit Page.Validate calls. Thanks for any advice!

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• How to signal a buffer full state between posix threads

  - by mikip

  Hi I have two threads, the main thread 'A' is responsible for message handling between a number of processes. When thread A gets a buffer full message, it should inform thread B and pass a pointer to the buffer which thread B will then process. When thread B has finished it should inform thread A that it has finished. How do I go about implementing this using posix threads using C on linux. I have looked at conditional variables, is this the way to go? . I'm not experienced in multi threaded programming and would like some advice on the best avenue to take. Thanks

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• Pro's and Con's of unit testing after the fact.

  - by scope-creep

  I have a largish complex app around 27k lines. Its essentially a rule drive multithreaded processing engine, without giving too much away Its been partially tested as it's been built, certain components. Question I have, is what is the pro's and con's of doing unit testing on after the fact, so to speak, after its been implemented. It is clear that traditional testing is going to take 2-3+ months to test every facet, and it all needs to work, and that time is not available really. I've done a fair bit of unit testing in the past, but generally it's been on desktop automation or LOB apps, which are fairly simple. The app is itself is highly componentized internally, interface driven really. I've not decided on what particular framework to use. Any advice would be appreciated. What say you.

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• Which async call use for DB connection and still responsive GUI?--

  - by Jade

  Hi, My application connects to MSSQL but sometimes it takes a while and the GUI is getting frozen. I would like to do the connection on the other thread, I guess BeginInvoke would be the best way (I know about background worker but I would like to learn this). I have studied MSDN page but I did not understand what is the best way to use? They also say that you can use only callback when the thread that called the async.method does not need to know the results...I dont understand it as I believe I can set some variable in the other thread to "pass" the result well. I would just need the GUI to be not frozen while the connection is being established. Thank you for your advice.

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• Using MSDN Licence

  - by Buchanan

  I'm a Micorsoft .NET developer. My employer gave me MSDN Subscription. I need to download Windows 7 (My subscription says I can download it), I want to download it to my home PC, and use it. At work we do not use Windows 7. I do lot of .NET development work using my home PC but not directly work related (Even though the experience I gain assist work related activities). Also 99% percent of work I do, from my home PC, is related to my job. I want to download and use Windows 7 in my home PC. I'm not sure this is legal or not. Can anyone please advice me on this?

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• Java session facade not being found via InitialContext lookups

  - by Hugh Buchanan

  I have a project that is Java EE 5 running on Glassfish. The IDE is Netbeans 6.7.1. We periodically have a very annoying problem with new session facades not being located via InitialContext: javax.naming.NameNotFoundException: No object bound to name java:comp/env/GlobalConfigEntityFacadeLocal In my class (within the same EJB container), I can use the other session facades just fine. This sort of problem happens periodically, and a mixture of clean&build and deleting the build-impl.xml files from nbproject sometimes resolve this. We are not using ejb-jar.xml (stopped using that over a year ago, it is now an empty The code that is calling this is very straight forward: GlobalConfigEntityFacadeLocal globalConfigEntityFacade = null; try { InitialContext ic = new InitialContext(); globalConfigEntityFacade = (GlobalConfigEntityFacadeLocal) ic.lookup("java:comp/env/GlobalConfigEntityFacadeLocal"); ... } catch ( ... ) {} Any advice would be appreciated!!!! Cheers

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• Radiobuttonlist and load page in same initial position

  - by Khalid

  Hi I have this simple code in my page, I have a long page, if the client use this button then it shall reload the page and display the page from the beginning. I wish to be reload the page and display from the last position. <asp:RadioButtonList ID="RadioButtonList5" runat="server" AutoPostBack="True" RepeatDirection="Horizontal"> <asp:ListItem Value="45">Sheet2</asp:ListItem> </asp:RadioButtonList> Any advice, apprciated. Thank you.

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• Defining tokens at runtime

  - by Peter Crenshaw

  I want to write a parser for EDIFACT messages with JavaCC. My problem is that I cannot define all terminal symbols before parsing a message because at the begining of each message there is a so called "Advice Segment" ("UNA" Segment) which defines things like element seperator symbol, escape symbol, segment terminator symbol and decimal notation (e.g. '.' or ','). So I think/guess the production rules need some kind of variables which must be set at runtime during parsing. Can this be done with JavaCC and if so how? Or is there another way I am missing?

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• How to send reminder notifications to subscribers for renewal from SQL Server 2005?

  - by codemonkie

  I have a table in SQL DB, namely dbo.subscribers, it contains following columns: -SubscriberID -JoinDateTime The business logic says a subscription last for 2 weeks and a reminder should be sent after 7 days from the JoinDateTime. The way that the system was designed to send reminders are via a URL call, e.g. http://xxx.xxx.xxx.xxx/renew_userid=SubscriberID/ and that can only be called from our webserver which is the only whitelisted IP machines given. Currently there is a windows service written to query the DB once a day at midnight to grab all expiring subscribers and send them reminders, however this batch approach only sends reminders to the nearest date, well, I could have set the interval down from 1 day to 1 hour such that the service can send notifications out closer to the exact JoinDateTime + 7 days requirements. I have heard a stored procedure can be written and perform task like this to a nearly real-time manner, if yes, please give me some hints on how to do it. Another question is - is SSRS bit of an overkill to perform things like this? Please advice. TIA

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• is there such a thing as xsl:fo reporting or xsl:fo simulation?

  - by topmulch

  Hi, I am trying to determine if MY xsl:fo generated PDF file will exceed one page or not, without actually generating the output. We use Apache-FOP 0.95 on our server, and the XML data is being generated using a PHP DOMDocument class before being passed onto an XSL-FO template. My question: Are there PHP libraries out there that can simulate xsl:fo output and send me reports that I can use in my application? Alternatively, is there a way for the Apache FOP itself (or sibling Java app) that sends reports without actually generating a file? I have been reading the FOP documentation, and aside from some things I can not fully understand, I have not been able to find a way to do that from within FOP. Any advice is much appreciated.

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• Pet project ideas in Java

  - by Amir Rachum

  I'm looking for a pet project idea in Java. I'm a Software Engineering undergraduate finishing my 3rd year. I have also been working for the past 1.5-2 years programming in C++, and I get enough of that at work. I recently learned Java and I like it very much. Already done some project assignments and some really small console applications, but I'm looking for something to invest my time in. I would like a project that is complex enough to "brag about" (have it open sourced and get people interested, added to resume) and learn while doing it, but also simple enough to be able to at least have a working version in a few months. I know the most common advice is something that I need, but I admit I simply couldn't think of anything like that. Any ideas?

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• Performance on joins in linq

  - by swapna

  HI , I am going to rewrite a store procedure in LINQ. What this sp is doing is joining 12 tables and get the data and insert it into another table. it has 7 left outer joins and 4 inner joins.And returns one row of data. Now question. 1)What is the best way to achieve this joins in linq. 2) do you think this affect performance (its only retrieving one row of data at a given point of time) Please advice. Thanks SNA.

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• How can two threads access a common array of buffers with minimal blocking ? (c#)

  - by Jelly Amma

  Hello, I'm working on an image processing application where I have two threads on top of my main thread: 1 - CameraThread that captures images from the webcam and writes them into a buffer 2 - ImageProcessingThread that takes the latest image from that buffer for filtering. The reason why this is multithreaded is because speed is critical and I need to have CameraThread to keep grabbing pictures and making the latest capture ready to pick up by ImageProcessingThread while it's still processing the previous image. My problem is about finding a fast and thread-safe way to access that common buffer and I've figured that, ideally, it should be a triple buffer (image[3]) so that if ImageProcessingThread is slow, then CameraThread can keep on writing on the two other images and vice versa. What sort of locking mechanism would be the most appropriate for this to be thread-safe ? I looked at the lock statement but it seems like it would make a thread block-waiting for another one to be finished and that would be against the point of triple buffering. Thanks in advance for any idea or advice. J.

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• Mongrel_rails can't find memcache-client

  - by tonisep

  We started to use memcache-client in our rails app and it works just fine with "script/server" but "mongrel_rails start" fails with an error. In environment.rb we define "memcache-client" and version "1.8.1". Gem list shows that the gem is installed: memcache-client (1.8.1). If run with "script/server" everything works but with "mongrel_rails start" it fails with error: no such file to load -- memcache-client Any advice what could be wrong here? Is there something different in the way mongrel_rails loads the gems compared to script/server? Or is my setup just broken?

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• c# Crystal reports wait cursor

  - by Spooky2010

  Using vs2008, winforms C#. Im using the crystal reports version that comes with vs2008. I can create and load a crystal report ok. But becasue it can take a few minutes to load, i want to bring up a wait cursor, but am having trouble with that. I have tried setting the this.crystalReportViewer1.Cursor = Cursors.WaitCursor; and tried the parent form this.cursor = cursors.waitcursor; The cursor changes briefly to wait mode, then changes back before the report has finished loading. How can i best set the wait cursor before the report starts to load, force it to stay in wait mode then change it back to the arrow, only after the report has finished loading thanks for any advice

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• Is there a security issue with using javascript to manipulate cookies?

  - by Scarface

  Hey guys, another quick question for the experts. I have an alert box that displays updates processed in php to the user just like this site. I want to make it so that if the user closes the box, then it will not pop up for another 5 minutes (unless they check the messages then it will not pop up because the entries that cause the pop up are deleted in the database). On the close of the box I was thinking of giving the user a javascript cookie, since the alert box is done in javascript. I was wondering if this was a bad coding practice, since I am kind of unfamiliar with cookies and was warned against them before. If anyone has any advice or can recommend a better way, I would really appreciate it.

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• advance click counter mysql or flat file

  - by jay

  Hi, First of all Thank You for looking. whats the best method for make an advance click counter (eg. order by views [today] | [yesterday] [this week] [last week] [this month] [last month] [all time] ). Is it better to use a flat file or mysql?. This is the MYSQL Structure i came up with. id (type: int(11)) link_id (type: int(11)) date (type: date) counter (type: int(11)) please can you advice me on whats the most effective way of doing this.

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• Events in Classes (VB.NET)

  - by Otaku

  I find that I write a lot of code within my classes to keep properties in sync with each other. I've read about Events in Classes, but have not been able to wrap my head around how to make them work for what I'm looking for. I could use some advice here. For example, in this one I always want to keep myColor up to date with any change whatsoever in any or all of the Red, Green or Blue properties. Class myColors Private Property Red As Byte Private Property Green As Byte Private Property Blue As Byte Private Property myColor As Color Sub New() myColor = Color.FromArgb(0, 0, 0) End Sub Sub ChangeRed(ByVal r As Byte) Red = r myColor = Color.FromArgb(Red, Green, Blue) End Sub Sub ChangeBlue(ByVal b As Byte) Blue = b myColor = Color.FromArgb(Red, Green, Blue) End Sub End Class If one or more of those changes, I want myColor to be updated. Easy enough as above, but is there a way to work with events that would automatically do this so I don't have to put myColor = Color.FromArgb(Red, Green, Blue) in every sub routine?

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• Using Session Variables inside an ajax document

  - by Pete Herbert Penito

  Hi, For some reason I've having problems reading this session variable within an ajax document, I've got this inside online.php: ` session_start(); if (isset($_SESSION['username'])) { $username = $_SESSION['username']; } ` For some Reason this is not setting username even when the session var is being used on the host page, i call on the php file every second using this ` $(document).ready(function() { var refreshId = setInterval(function() { $('#timeval').load('online.php'); }, 1000); $("#stop").click(function() { clearInterval(refreshId); }); }); ` Am I doing something wrong, or is this not even possible?? Any advice would really help thanks alot!

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• Cross-Browser jQuery text-zoom implementation

  - by JMC Creative

  I've got some code to increase/decrease font size. This is giving me a headache because each browser seems to implement the $.css('font-size') differently (see jquery bug). The part that's really killing me, though, is that Firefox is scaling up okay, but when I use the scale down function below, it scales up. Webkit & IE are both working as expected. Any ideas on that? I put this in a fiddle here: http://jsfiddle.net/srQ3P/1/ where you can see it working as expected, and you can see it broken in firefox at the project page: http://cumberlandme.info/residents MAJOR EDIT Sorry, the issue is not the code, it's firefox buggy behavior. After I zoom in or out with the browser controls (ctrl + plus or ctrol + minus) the js goes haywire. This doesn't happen in other browsers. This is the real issue. Any advice on that

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• DataMapper: using auto_migrate! with many-to-many dependencies?

  - by pschuegr

  Hi, I'm trying to migrate my app from MySql to Postgresql, using Rails3-pre and the latest DataMapper. I have several models which are related through many-to-many relationships using :through = Resource, which means that DataMapper creates a join table with foreign keys for both models. I can't auto_migrate! these changes, because I keep getting this: ERROR: cannot drop table users because other objects depend on it DETAIL: constraint artist_users_owner_fk on table artist_users depends on table users constraint site_users_owner_fk on table site_users depends on table users HINT: Use DROP ... CASCADE to drop the dependent objects too. I have tried everything I can think of, and thought I had things working when I added :constraint = :skip to the field definition, but I keep getting that error back when I try and run auto_migrate. I thought that :skip meant that it would ignore the dependents, but maybe that only applies for deleting rows and not dropping tables? I should mention that I can run auto_migrate after i nuke the db once, but after that, errors. Any suggestions or advice much appreciated.

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• MCV/MVP Patterns and Applications that interface with Hardware (DAQ/PLC/etc)

  - by Ryan

  I've been reading a lot about the MCV and MVP patterns for use with UI and it seems like a really nice powerful way to handle user interfaces. I am - however - having a difficult time deciding how this could integrate into a system where data in the model is created from a Data Acquisition System or Serial/Ethernet devices. There is also the added step that 70% of application interaction is performed by a PLC instead of a live user. It seems that for apps that just read/write & manipulate information from a database this works great, but how does does hardware and automation fit into these patterns? Is it as simple as another controller (for lack of a better term) that interacts with hardware that manipulates data and writes to a model? Maybe I am over thinking this or thinking too simply, so any advice would be great. I'm not quite sure where I'm going with this, so if something doesn't make sense or I was too vague leave me a comment. Thanks!

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