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• Why is autorelease especially dangerous/expensive for iPhone applications?

  - by e.James

  I'm looking for a primary source (or a really good explanation) to back up the claim that the use of autorelease is dangerous or overly expensive when writing software for the iPhone. Several developers make this claim, and I have even heard that Apple does not recommend it, but I have not been able to turn up any concrete sources to back it up. SO references: autorelease-iphone Why does this create a memory leak (iPhone)? Note: I can see, from a conceptual point of view, that autorelease is slightly more expensive than a simple call to release, but I don't think that small penalty is enough to make Apple recommend against it. What's the real story?

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• Where to learn about HTTP?

  - by razass

  I am fluent in HTML and PHP and slowly learning JavaScript however I have noticed that there is a huge hole in my knowledge when it comes to understanding how web software communications actually work. I understand the flow of information across the net however I would like to learn about HTTP protocols to better understand how the data is actually sent back and forth through the internet to help me understand things like REST, HTTP Headers, AJAX requests, etc. However, I must be searching the wrong terms because I haven't been able to find a good description of HTTP protocols. Any help is appreciated to point me in the right direction. Thanks!

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• Generating changelogs from commit-comments - bad idea?

  - by Adam Asham

  I work for a small company (<10 developers) where we use Svn and to some extent Git. We have no release system implemented. We don't tag our applications with a release numbers so as you can imagine, we don't keep track of changes between releases very well. With this in mind I've been thinking about generating changelogs from the commit-comments. It doesn't have to be an awful idea if you implement guidelines for how to write comments. Or am I fooling myself thinking that colleagues will follow these guidelines? Most of them don't bother adding comments today but I'm hoping that will change if they become aware of how to formulate themselves and that you don't have to comment on every single commit. Or would we it be more wise to gather information from our bug/project managing software and write the changelogs manually (which unfortunately is something nobody wants to do)?

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• SaaS practical basics and projects

  - by Medardas

  So i need some directions. I want to understand Cloud Software as a Service(SaaS) practical initialization. The thing is I want to create a simple cloud service which would let me run programs on this cloud from remote machine. As I understand, I need some kind of specific backbone project to start this system, similar like OpenStack or Apache Cloud for Infostructure as a Service. Of course it may be that I understand it completely wrong and even if there is such project, it is not open source, free. I could also comprehend SaaS building on IaaS, but the thing is, I can't find any practical information at all. Could Somebody indulge me if there is any kind of free licence SaaS project or recommend a related articles or explain everything in a nut case with atleast vague direction.

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• can QuickGraph support these requirements? (includes database persistence support)

  - by Greg

  Hi, Would QuickGraph be able to help me out with my requirements below? (a) want to model a graph of nodes and directional relationships between nodes - for example to model web pages/files linked under a URL, or modeling IT infrastructure and dependencies between hardware/software. The library would include methods such as * Node.GetDirectParents() //i.e. there could be more than one direct parent for a node * Node.GetRootParents() //i.e. traverse the tree to the top root parent(s) for the given node * Node.GetDirectChildren() * Node.GetAllChildren() (b) have to persist the data to a database - so it should support SQL Server and ideally SQLite as well. If it does support these requirement then I'd love to hear: any pointers to any parts of QuickGraph to dig into? what is the best concept re it's usage in terms of how to use database persistence - is it a simpler design to assume every search/method works directly on the database, or does QuickGraph support smarts to be able to work in memory and the "save" to database all changes at an appropriate point in time (e.g. like ADO.net does with DataTable etc) Thanks in advance

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• Mobile web on nokia devices not displaying centain elements

  - by Jan de Jager

  So i have a site which is rendered with our in-house portal engine. It resizes images and adjusts style-sheets automatically in real-time. Issue is that some html elements are inexplicably disappearing due to what only can be described as HTML compatibility. But the problem is not consistent. And only seems to be an issue on some nokia devices. I have tried to install the Nokia Mobile Browser Emulator... but its the worst piece of software i have seen in my life... after 4 hours of installing and uninstalling different versions of JRE, i still can't get it to install. EDIT: Problem now residing at http://wiseguy.mobi/?PageID=657

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• Ways to divide the high/low byte from a 16bit address?

  - by Grissiom

  Hello, I'm developing a software on 8051 processor. A frequent job is to divide the high and low byte of a 16bit address. I want to see there are how many ways to achieve it. The ways I come up so far are: (say ptr is a 16bit pointer, and int is 16bit int) ADDH = (unsigned int) ptr >> 8; ADDL = (unsigned int) ptr & 0x00FF; and ADDH = ((unsigned char *)&ptr)[0]; ADDL = ((unsigned char *)&ptr)[1]; Does anyone have any other bright ideas? ;) And anyone can tell me which way is more efficient?

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• Where are the really high quality and complex Swing components?

  - by jouhni

  Looking at Swing, I have the feeling that it comes with many useful and reasonable atomic components in its core. And when I look at the Web there are hundrets of quickly plugged together components (among them many date/time pickers, pimped lists and tables), which have in common that I could easily write them on my own, if I needed them. When I build big software and come to the point where I need a domain-specific component which is really big, I mostly come to the point where I have to write it on my own, which, due to the point that they are not just plugged together lists and tables, isn't done qickly. So, the question is, why are there no Swing component galleries which contain more than just customized date/time pickers or lists with added tree support. Where are the components which really raise the level of abstraction, or are in best case domain-specific?

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• How to change the BlackBerry volume, or mute it?

  - by devguy

  My current code is this: int volume = Alert.getVolume(); // reads 100 Alert.setVolume(0); It DOESN'T change the volume setting, like it would be supposed to do :( Even calling Alert.mute(true) doesn't produce any good effect. Audio.setVolume(0) also doesn't work! I'm running this on a Curve 8310. I have another software installed though that successfully manages to lower the volume setting a lot...so I suppose I'm doing something wrong. Any idea?

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• How can I save the schema of a SQL Database to a file?

  - by Eric

  I'm writing a software application in C#.Net that connects to a SQL Server database. My C# project is under SVN version control, but I'd like to include my database schema in the SVN repository as well. An answer to a previous question of mine suggested storing the scripts to generate the database in version control. Is there a way to automatically generate these scripts from an existing database? I'm very new to SQL Server, but I noticed in management studio that the SQL commands to create a table can be generated automatically by right clicking on the table and clicking "Script Table As". Is there an equivalent command that would work with the entire database?

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• If you were developing shareware softwares for windows, would you target the .Net Framework or use n

  - by bohoo

  For the sake of the question, by 'shareware' I mean a software which is relatively small in size (up to few dozens of mb) and available for download and evaluation through a web site. I'm asking this question, because I don't understand something regarding the current state of windows commercial desktop development. It seems to me that: There is no reliable statistic regarding the extent of windows systems with .Net Framework installed. It makes no sense to force the end user to install the 20-60mb .Net for an application which may be smaller. Applications conforms to the term 'shareware' above have a big share on the win os market. Much of them don't need the capabilities of low level languages like c++, and therefore ideally they should be developed with a RAD enviroment. So, One would suppose there will be a blossom of RAD enviroments for native win code. But I know about only one - Delphi, and Delphi is so unpopular. How is that?

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• What are some things I should watch out for before hiring a freelance programmer

  - by Luke101

  I am looking to hire a freelancer for a big web application. The budget for this project is a little over $20,000. The programmer will develop in asp.net MVC C#. Are there any usual things I should pay attention to or watch out for. i really don't want to hire the freelancer and when he/she is done with the project it is not what i expect. I have heard horror stories where the programmer delivered a fantastic product but the code was not commented and parts of the software was hidden behind DLLs. Is there anyway to avoid situations like this? I am sure I cannot think of every possible scenario when i write the project description. Also, is it advisable to hire a lawyer to write the contract?

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• If OOP makes problems with large projects, what doesn't?

  - by osca

  I learned Python OOP at school. My (good in theory, bad in practice) informatics told us about how good OOP was for any purpose; Even/Especially for large projects. Now I don't have any experience with teamwork in software development (what a pity, I'd like to program in a team) and I don't know anything about scaling and large projects either. Since some time I'm reading more and more about that object-oriented programming has (many) disadvantages when it comes to really big and important projects/systems. I got a bit confused by that as I always thought that OOP helped you keep large amounts of code clean and structured. Now why should OOP be problematic in large projects? If it is, what would be better? Functional, Declarative/Imperative?

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• How can I give values to webBrowser control text boxes ?

  - by Rizwan Aaqil

  Please go to this website : http://www.dofellow.com/ and see the software video. This guy is giving values to webBrowser control text boxes from database / datagrid / textbox etc. Can anyone tell me how is he doing that ? I think every website have different ids for text boxes then how he is giving values to those fields ? Also, how is he searching for do follow links on google ? Can anyone share the search query with me? Thanks in advance.

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• Finding an HTTP proxy that will intercept static resource requests

  - by pkh

  Background I develop a web application that lives on an embedded device. In order to make dev times sane, frontend development is done using apache serving static documents, with PHP proxying out to the embedded device for specifically configured dynamic resources. This requires that we keep various server-simulation scripts hanging around in source control, and it requires updating those scripts whenever we add a new dynamic resource. Problem I'd like to invert the logic: if the requested document is available in the static documents directory, serve it; otherwise, proxy the request to the embedded device. Optimally, I want a software package that will do this for me (for Windows or buildable on cygwin). I can deal with forcing apache to do it with PHP, but I'm unsure how to configure it to make it happen. I've looked at squid and privoxy, but neither of them seem to do what I want. Any ideas? I'd rather not have to roll my own.

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• How to make tag group with including predefined attributes, to wrap other things quickly?

  - by jitendra

  for example. if i want to quickly wrap anything by this in once. in dreamweaver or in any other free software where i can do this. I want to select this <p>anything can be here - content, other html tag etc.</p> and in one shot want to wrap inside 2 divs with predefined classes <div class="one"> <div class="two"> <p>anything can be here - content, other html tag etc.</p> </div> </div> I have work with large amount of code and need to wrap random things in Divs with defined attributes.

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• Best way to generate an automated report in Google Analytics for a specific collection of URLs

  - by Forrest Marvez

  Currently using Google Analytics as a supplement to our paid tracking software, but neither of them are giving us exactly what we need. I have a list of about 60 or so urls (out of about 1500) on the site that I wish to setup a monthly report for that can be emailed to multiple recipients. I can't seem to figure out how to create a report showing just the hits on these 60 urls, I can apply advanced filters on the content page but those disappear after a while and sometimes error out when adding too many URL's. Is there a method I'm missing in Google Analytics to achieve this goal or am I better running an SSIS package to pull the URL's from the API and formatting a document that way?

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• Tool used to retrieve code metrics in xUnit Test Patterns?

  - by leeand00

  I'm reading xUnit Test Patterns by Gerard Meszaros. On one of the pages he refers to some software metrics: While the need to wrap lines to keep them at 65 characters makes this code look even longer than it really is, it is still unnecessarily long. It contains 25 executable statements including initialized declarations, 6 lines of control statements, 4 in-line comments, and 2 lines to declare the test method—giving a total of 37 lines of unwrapped source code. Short of counting the statements to find these metrics, does anybody have any idea if he used a particular tool to calculate the metrics? (If you have any suggestions for tools that will count similar metrics, I'm looking for one that works on Java, Javascript and C++) Thanks!

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• Browser Side Photo Editing Library

  - by echox

  Hi! Currently I'm searching for a free solution to simple edit some photos at the users browser. Resizing and Cropping would be mandatory. I'm not searching for an online service (for example SUMO or PIXLR which are great), because I want to include the software into a WYSIWYG Editor. JavaScript would be really nice, but it would have to work in IE 8. Pixastic is a great example, but works only in modern browsers (not IE 8 :-/) Any suggestions what I could use? Maybe setting up some kind of image processing service with ImageMagick and communicating with it through AJAX could also be an solution? Has anyone gained some experience with such a solution?

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• VB.NET - Convert Unicode in one TB to Shift-JIS in another TB

  - by Yiu Korochko

  Trying to develop a text editor, I've got two textboxes, and a button below each one. When the button below textbox1 is pressed, it is supposed to convert the Unicode text (intended to be Japanese) to Shift-JIS. The reason why I am doing this is because the software VOCALOID2 only allows ANSI and Shift-JIS encoding text to be pasted into the lyrics system. Users of the application normally have their keyboard set to change to Japanese already, but it types in Unicode. How can I convert Unicode text to Shift-JIS when SJIS isn't available in the System.Text.Encoding types?

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• Intercept windows open file

  - by HyLian

  Hello, I'm trying to make a small program that could intercept the open process of a file. The purpose is when an user double-click on a file in a given folder, windows would inform to the software, then it process that petition and return windows the data of the file. Maybe there would be another solution like monitoring Open messages and force Windows to wait while the program prepare the contents of the file. One application of this concept, could be to manage desencryption of a file in a transparent way to the user. In this context, the encrypted file would be on the disk and when the user open it ( with double-click on it or with some application such as notepad ), the background process would intercept that open event, desencrypt the file and give the contents of that file to the asking application. It's a little bit strange concept, it could be like "Man In The Middle" network concept, but with files instead of network packets. Thanks for reading.

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• Hidden Features of Visual Studio (2005-2008)?

  - by shoosh

  VS is such a massively big product that even after years of working with it I sometimes stumble upon a new/better way to do things or things I didn't even know were possible. For instance- Crtl-R,Ctrl-W - show white spaces. essential for editing python build scripts. Under "HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\8.0\Text Editor" Create a String called Guides with the value "RGB(255,0,0), 80" to have a red line at column 80 in the text editor. What other hidden features have you stumbled upon?

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• How to upgrade your Solaris 11 with the latest available SRUs ?

  - by jim

  1 ) Follow the instructions (*) in the document "Updating the Software on Your Oracle Solaris 11 System" * see and apply "How to Configure the Oracle Solaris support Repository" then run: # pkg update --accept Reboot if necessary (see "why" in STEP 3) Note: it is possible that your "pkg" package is not up to date # pkg update WARNING: pkg(5) appears to be out of date, and should be updated before running update.  Please update pkg(5) using 'pfexec pkg install pkg:/package/pkg' and then retry the update. -> So just upgrade it: # pkg install pkg:/package/pkg Reboot if necessary (see "why" in STEP 3) By the way, note that I am using the DEV tree: # pkg publisher -PPUBLISHER                             TYPE     STATUS   URIsolaris                               origin   online   https://pkg.oracle.com/solaris/dev/ 2 ) Now our system is ready to jump to the latest SRUs so check what is available: # pkg list -af entire NAME (PUBLISHER)                     VERSION                    IFO entire                                            0.5-DOT-11-0.175.1.0.0.24-DOT-2    ---   --> Latest version available in the repository ! entire                                            0.5.11-0.175.1.0.0.24.0    --- entire                                            0.5.11-0.175.1.0.0.23.0    --- entire                                            0.5.11-0.175.1.0.0.22.1    --- entire                                            0.5.11-0.175.1.0.0.21.0    --- entire                                            0.5.11-0.175.1.0.0.20.0    --- entire                                            0.5.11-0.175.1.0.0.19.0    --- entire                                            0.5.11-0.175.1.0.0.18.0    --- entire                                            0.5.11-0.175.1.0.0.17.0    --- entire                                            0.5.11-0.175.1.0.0.16.0    --- entire                                            0.5.11-0.175.1.0.0.15.1    --- entire                                            0.5.11-0.175.1.0.0.14.0    --- entire                                            0.5.11-0.175.1.0.0.13.0    --- entire                                            0.5.11-0.175.1.0.0.12.0    --- entire                                            0.5.11-0.175.1.0.0.11.0    --- entire                                            0.5.11-0.175.1.0.0.10.0    --- entire                                            0.5.11-0.175.0.11.0.4.1    i--   --> this is at what level your OS is ! 3 ) Apply the latest SRU: (don´t forget the --accept parameter) # pkg update --accept entire-AT-0.5.11-0.175.1.0.0.24.2------------------------------------------------------------Package: pkg://solaris/consolidation/osnet/osnet-incorporation-AT-0.5.11,5.11-0.175.1.0.0.24.2:20120919T184141ZLicense: usr/src/pkg/license_files/lic_OTNOracle Technology Network Developer License AgreementOracle Solaris, Oracle Solaris Cluster and Oracle Solaris ExpressEXPORT CONTROLSSelecting the "Accept License Agreement" button is a confirmationof your agreement that you comply, now and during the trial term(if applicable), with each of the following statements:-You are not a citizen, national, or resident of, and are not undercontrol of, the government of Cuba, Iran, Sudan, North Korea, Syria,or any country to which the United States has prohibited export. <....> Packages to remove:  10 Packages to install:  38 Packages to update: 443 Mediators to change:   2 Create boot environment: Yes   --> a reboot is required and a new BE will be created for you !! Create backup boot environment:  No DOWNLOAD                               PKGS       FILES    XFER (MB)Completed                                491/491 23113/23113  504.2/504.2PHASE                                        ACTIONSRemoval Phase                           10359/10359 Install Phase                               15530/15530 Update Phase                              15543/15543 PHASE                                          ITEMSPackage State Update Phase         932/932 Package Cache Update Phase       452/452 Image State Update Phase                    2/2 A clone of solaris-1 exists and has been updated and activated.On the next boot the Boot Environment solaris-2 will bemounted on '/'.  Reboot when ready to switch to this updated BE. 4 ) Reboot your system # reboot  5 ) Resources Solaris 11 Express and Solaris 11 Support Repositories Explained [ID 1021281.1] Oracle Solaris 11 Release Notes Updating the Software on Your Oracle Solaris 11 System

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• Why might different computers calculate different arithmetic results in VB.NET?

  - by Eyal

  I have some software written in VB.NET that performs a lot of calculations, mostly extracting jpegs to bitmaps and computing calculations on the pixels like convolutions and matrix multiplication. Different computers are giving me different results despite having identical inputs. What might be the reason? Edit: I can't provide the algorithm because it's proprietary but I can provide all the relevant operations: ULong \ ULong (Turuncating division) Bitmap.Load("filename.bmp') (Load a bitmap into memory) Bitmap.GetPixel(Integer, Integer) (Get a pixel's brightness) Double + Double Double * Double Math.Sqrt(Double) Math.PI Math.Cos(Double) ULong - ULong ULong * ULong ULong << ULong List.OrderBy(Of Double)(Func) Hmm... Is it possible that OrderBy is using a non-stable QuickSort and that QuickSort is using a random pivot? Edit: Just tested, nope. The sort is stable.

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• how to retain one million of simultanous TCP connections?

  - by cow

  i am to design a server that needs to serve millions of clients that are simultaneously connected with the server via TCP. the data traffic between the server and the clients may be sparse. so bandwidth issue can be ignored. one important requirement is that whenever the server needs to send data to any client it can use the existing TCP connection instead of opening a new connection toward the client (because client can be behind a firewall). does anybody know how to do it and what hardware/software is needed (at the least cost)? thanks in advance for any suggestion.

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