Search Results

Search found 31421 results on 1257 pages for 'software performance'.

Page 667/1257 | < Previous Page | 663 664 665 666 667 668 669 670 671 672 673 674  | Next Page >

  • How to create sleek customized buttons, tables and other views for iPhone/iPad apps?

    - by wgpubs
    I'm looking to know both what can be customized as well as the recommended way to customize some of the major UIView subclasses in the iPhone SDK (in particular UIButton, UITableView/Cell ... but really open to any of the views in the SDK). Any recommended tutorials? Examples? Are there bad practices that can actually hinder performance and/or destablize your app in any way that should be avoided? Thanks

    Read the article

  • Linq-to-SQL: how many datacontexts ?

    - by sh00
    I have a SQL Server 2008 database with 300 tables. The application I have to design is an Windows Forms app, .NET 3.5, C#. Which is the best way to work with Linq-to-SQL ? I intend to make a datacontext for each business entity. Is there any problem ? I need to know if this way of working with Linq-to-SQL has any disadvantage or can create performance issues ? Thanks.

    Read the article

  • What are the reasons *not* to use a GUID for a primary key?

    - by Yarin
    Whenever I design a database I automatically start with an auto-generating GUID primary key for each of my tables (excepting look-up tables) I know I'll never lose sleep over duplicate keys, merging tables, etc. To me it just makes sense philosophically that any given record should be unique across all domains, and that that uniqueness should be represented in a consistent way from table to table. I realize it will never be the most performant option, but putting performance aside, I'd like to know if there are philosophical arguments against this practice?

    Read the article

  • On-demand refresh mode for indexed view (=Materialized views) on SQL Server?

    - by MOLAP
    I know Oracle offers several refreshmode options for their materialized views (on demand, on commit, periodically). Does Microsoft SQLServer offer the same functions for their indexed views? If not, how can I else use indexed views on SQLServer if my purpose is to export data on a daily+ on-demand basis, and want to avoid performance overhead problems? Does a workaround exist?

    Read the article

  • MySQLi -- OO or Procedural?

    - by Kerry
    I know OO is the "way to go" but I'm thinking procedural might be easier to use in the wrapper I'm making. Any difference in performance between MySQLi Object Oriented vs Procedural?

    Read the article

  • Are GUID primary keys bad in theory, or just practice?

    - by Yarin
    Whenever I design a database I automatically start with an auto-generating GUID primary key for each of my tables (excepting look-up tables) I know I'll never lose sleep over duplicate keys, merging tables, etc. To me it just makes sense philosophically that any given record should be unique across all domains, and that that uniqueness should be represented in a consistent way from table to table. I realize it will never be the most performant option, but putting performance aside, I'd like to know if there are philosophical arguments against this practice?

    Read the article

  • JBOSS Monitoring tool on UNIX

    - by The Machine
    I have a web application deployed on a jboss server running on a unix machine. I want to be able to monitor threads, CPU times ,requests, etc. , for gauging application performance on the server. What might be the best way to do this?

    Read the article

  • Is PyOpenGL a good place to start learning opengl programing?

    - by Isaiah
    I want to start learning OpenGL but I don't really want to have to learn another language to do it. I already am pretty proficient in python and enjoy the language. I just want to know how close it is to the regular api? Will I be able to pretty easily follow tutorials and books without too much trouble? I know C++ gives better performance, but for just learning can I go wrong with PyOpenGL? Thanks alot

    Read the article

  • Preventing HTML character entities in locale files from getting munged by Rails3 xss protection

    - by Chris S
    We're building an app, our first using Rails 3, and we're having to build I18n in from the outset. Being perfectionists, we want real typography to be used in our views: dashes, curled quotes, ellipses et al. This means in our locales/xx.yml files we have two choices: Use real UTF-8 characters inline. Should work, but hard to type, and scares me due to the amount of software which still does naughty things to unicode. Use HTML character entities (&#8217; &#8212; etc). Easier to type, and probably more compatible with misbehaving software. I'd rather take the second option, however the auto-escaping in Rails 3 makes this problematic, as the ampersands in the YAML get auto-converted into character entities themselves, resulting in 'visible' &8217;s in the browser. Obviously this can be worked around by using raw on strings, i.e.: raw t('views.signup.organisation_details') But we're not happy going down the route of globally raw-ing every time we t something as it leaves us open to making an error and producing an XSS hole. We could selectively raw strings which we know contain character entities, but this would be hard to scale, and just feels wrong - besides, a string which contains an entity in one language may not in another. Any suggestions on a clever rails-y way to fix this? Or are we doomed to crap typography, xss holes, hours of wasted effort or all thre?

    Read the article

  • How to extract keywords from a body of text in PHP

    - by Akeem
    Currently I'm leveraging http://developer.yahoo.com/search/content/V1/termExtraction.html which isn't ideal for performance and quality reasons. Before I embark on spending time on writing a system I wanted to see if there are any other available options that can do the trick.

    Read the article

  • How to check the type of inputAvailable in iPad?

    - by iphoneDev
    Hi, I am implementing the sound recording functionality in my iPad app. I want to prompt the user to attach his headphone with microphone for better performance.For this I need to check that whether the user has connected the headphone with microphone or not. In the AVAudioSession there is a method inputIsAvailable.But this method returns 'Yes' for the inbuilt mic of iPad also.So,please suggest how to detect that whether the headphone with mic is connected to the device or not??

    Read the article

  • .Net 4.0 Memory-Mapped Files verses RDMS Storage

    - by Harry
    I'm interested in people's thoughts comparing storing data in a traditional SQL based Database or utilising a Memory-Mapped File such as the one in the new .Net 4.0 runtime. The data in question would be arrays of simple structures. Obvious pros and cons: SQL Database Pros Adhoc query support SQL Management Tools Schema changes (adding more columns and setting default values) Memory-Mapped Pros Lighter overhead? (this is an assumption on my part) Shareable between process threads Any others? Is it worth it for performance gains?

    Read the article

  • UnauthorizedAccessException in ComRegisterFunction when accessing registry on Win 7 64.

    - by sanbornc
    I have a [ComRegisterFunction] that I am using to register a BHO Internet explorer extension. During registration on 64-bit windows 7 machines, a UnauthorizedAccessException is thrown on the call to subKey.SetValue("NoExplorer", 1). The registry appears to have BHO's located @ \HKLM\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects, however, I get them same exception when trying to register there. Any Help would be appreciated. [ComRegisterFunction] public static void RegisterBho(Type type) { string BhoKeyName= "Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Browser Helper Objects"; RegistryKey registryKey = Registry.LocalMachine.OpenSubKey(BhoKeyName, true) ?? Registry.LocalMachine.CreateSubKey(BhoKeyName); if(registryKey == null) throw new ApplicationException("Unable to register Bho"); registryKey.Flush(); string guid = type.GUID.ToString("B"); RegistryKey subKey = registryKey.OpenSubKey(guid) ?? registryKey.CreateSubKey(guid); if (subKey == null) throw new ApplicationException("Unable to register Bho"); subKey.SetValue("NoExplorer", 1); registryKey.Close(); subKey.Close(); }

    Read the article

  • Edit very large xml files

    - by Matt
    I would like to create a text box which loads xml files and let users edit them. However, I cannot use XmlDocument to load since the files can be very large. I am looking for options to stream/load the xml document in chunks so that I do not get out of memory errors -- at the same time, performance is important too. Could you let me know what would be good options?

    Read the article

  • Memcached Latency in Amazon EC2

    - by user365941
    Hi, I am planning to use Amazon EC2 host only for MemCache.My web application ll be residing on shared hosted server and will be communicating to Ec2 for querying Memcache. How would be the performance of this setup. Regards, Mugil.

    Read the article

  • Approach for authentication and storing user details.

    - by cappuccino
    Hey folks, I am using the Zend Framework but my question is broadly about sessions / databases / auth (PHP MySQL). Currently this is my approach to authentication: 1) User signs in, the details are checked in database. - Standard stuff really. 2) If the details are correct only the user's unique ID is stored in the session and a security token (user unique ID + IP + Browser info + salt). The session in written to the filesystem. I've been reading around and many are saying that storing stuff in sessions is not a good idea, and that you should really only write a unique ID which refers back to the user's details and a security token to prevent session hijacking. So this is the approach i've taken, i use to write the user's details in session, but i've moved that out. Wanted to know your opinions on this. I'm keeping sessions in the filesystem since i don't run on multiple servers, and since i'm only writting a tiny tiny bit of data to sessions, i thought that performance would be greater keeping sessions in the filesystem to reduce load on the database. Once the session is written on authentication, it really is only read-only from then on. 3) The rest of the user's details (like subscription details, permissions, account info etc) are cached in the filesystem (this can always be easily moved to memory if i wanted even more performance). So rather than keeping the user's details in session, the user's details are cached in the file system. I'm using Zend_Cache and the unique cache id is something like md5(/cache/auth/2892), the number is the unique id of the user. I guess the benefit of this method is that once the user is logged in, there is essentially not database queries being run to get the user's details. Just wonder if this approach is better than keeping the whole lot in session... 4) As the user moves throughout the site the only thing that is checked is the ID in the session and the security token. So, overall the first question is 1) is the filesystem more efficient than a database for this purpose 2) have i taken enough security precautions 3) is separating user detail's from the session into a cached file a pointless task? Thanks.

    Read the article

  • Which flash server i should use for flash chat with a lot of instant users?

    - by Almas Adilbek
    I'm currently developing flash chat for social networking websites like facebook. Actually i want to develope flash chat in this game. Chat would have a lot of instant active users. So that, i need to know which flash servers i should use, is there any free ones that are pretty good for such high performance needs? I've found ElectroServer4 Professional. Is it enough for my task? Thank you

    Read the article

  • ADOdb Lite versus MySqli

    - by Sofyan
    Hello, I am working an a project to build an arcade site with PHP. I am considering using ADOdb Lite or MySqli. Which one is better for performance, speed and security? Thanks,

    Read the article

  • Is django orm & templates thread safe?

    - by Piotr Czapla
    I'm using django orm and templates to create a background service that is ran as management command. Do you know if django is thread safe? I'd like to use threads to speed up processing. The processing is blocked by I/O not CPU so I don't care about performance hit caused by GIL.

    Read the article

  • LINQ2SQL: how many datacontexts ?

    - by sh00
    I have a SQL Server 2008 database with 300 tables. The application I have to design is an Windows Forms app, .NET 3.5, C#. Which is the best way to work with LINQ2SQL ? I intend to make a datacontext for each business entity. Is there any problem ? I need to know if this way of working with LINQ has any disadvantage or can create performance issues ? Thanks.

    Read the article

  • PHP's openssl_sign generates different signature than SSCrypto's sign

    - by pascalj
    I'm writing an OS X client for a software that is written in PHP. This software uses a simple RPC interface to receive and execute commands. The RPC client has to sign the commands he sends to ensure that no MITM can modify any of them. However, as the server was not accepting the signatures I sent from my OS X client, I started investigating and found out that PHP's openssl_sign function generates a different signature for a given private key/data combination than the Objective-C SSCrypto framework (which is only a wrapper for the openssl lib): SSCrypto *crypto = [[SSCrypto alloc] initWithPrivateKey:self.localPrivKey]; NSData *shaed = [self sha1:@"hello"]; [crypto setClearTextWithData:shaed]; NSData *data = [crypto sign]; generates a signature like CtbkSxvqNZ+mAN... The PHP code openssl_sign("hello", $signature, $privateKey); generates a signature like 6u0d2qjFiMbZ+... (For my certain key, of course. base64 encoded) I'm not quite shure why this is happening and I unsuccessfully experimented with different hash-algorithms. As the PHP documentation states SHA1 is used by default. So why do these two functions generate different signatures and how can I get my Objective-C part to generate a signature that PHPs openssl_verify will accept? Note: I double checked that the keys and the data is correct!

    Read the article

  • How can I created PDF output from rrdcgi?

    - by Octopus
    I have created a rrdcgi script to display information about the system performance with graphs. Now I would like to add an option for the users to create PDF on the fly with the details on current page (images and information) and header and footer. I also want the generated PDF files to be saved in some location so that that can be easily accessed next time. Is this possible to do with rrdcgi or any perl code would be really appreciated. I need this options

    Read the article

< Previous Page | 663 664 665 666 667 668 669 670 671 672 673 674  | Next Page >