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  • Why would one write global code inside a function definition-call pair?

    - by ssg
    I see examples where JavaScript code including jQuery and jslint use the notation below: (function(){ // do something })(); instead of: // do something I first thought this is just for local scoping, i.e. creating local variables for the code block without polluting global namespace. But I've seen instances without any local variables at all too. What am I missing here?

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  • I am trying to understand Functions

    - by Moja Ra
    Ok I am coming into a stumbling block no matter what language I am using. I am trying to understand when I need to pass arguments in a Function and when I don't need to pass arguments in a function. Can someone give me some direction on where to find guidance on this?

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  • Class with proprties that haven't been set

    - by koumides
    Hello there, I am creating a class in C# which eventually will be part of a library that other uses can use. A user of this class has to set some properties and then use a public method to retrieve the results. What shall I do when a user calls the method without setting all the properties? Throw exception and expect the user to catch it? Thanks

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  • Upload & Link an Image with php

    - by Jason
    I know this should be really simple, but im having trouble getting this to work right, basically i want to have an image upload box that uploads an image and then puts the new url into a mysql database. Anyone have any advice on how to do this, as i may be having developer block but im over complicating it in my head :P Thanks

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  • How to get the sql query from a NHibernate save

    - by adriaanp
    I am trying to create a type of recorded data transaction that I can replay on a different database. For example I am capturing an order into a system, when I save that I want to be able to "export" a sql script that I can run on another database to create the same order. I am using NHibernate and I am trying to catch the sql query string for the save operation to save to a file, but with no success.

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  • preg_match_all with surrounding data

    - by user323304
    Hey. I have a large amount of log data that I need to get some relevant information out of. The syntax is: WORD1 some text KEYWORD some text WORD2 WORD1 some text KEYWORD some text WORD2 WORD1 some text KEYWORD some text WORD2 WORD1 some text KEYWORD some text WORD2 Would it be possible to use regex to get a certain block out of it - so that when I queried some keyword it would return WORD1 some text THIS_KEYWORD some text WORD2 PS: There could be multiple instances of one keyword, it should return all of the blocks (preg_match_all, PREG_SET_ORDER?).

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  • How to handle error on other thread?

    - by markattwood
    Hi, I'm trying to handle errors that have occurred on other threads the .NET CF program is like below: static void Main() { Thread t = new Thread(Start); t.Start(); ... } void Start() { ... Exception here } In my situation, putting try catch in the Start method is impossible. How can I handle it in the global code?

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  • Is select function internaly call tcp connect ?

    - by Syedsma
    Code Sinnpet: int CreateaTCPSocket() { int iSockID = ACE_OS::socket(......); ACE_OS::set_flags(iSockID,O_NONBLOCK); ACE_OS::bind(); if (ACE_OS::connect(iSockID ,....) < 0) { if (ACE_OS::select(.....,timeout) <= 0) { return INVALID_HANDLE; } } return iSockID; } My question is when connect is failed for non-block error and select is called and say select return success then again we need to call connect or select function internal do connect?

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  • Can I check if e-mail address is valid?

    - by simple
    How can I implement following logic? User registers with an e-mail address If provided e-mail address is a valid email address Then user account get's activated or if it is a fake email then user account is not activated I doubt that I can catch the - "Delivery failed reply message", right? anyhow how would you suggest to implement the above logic? PS. I will have to find a way no matter what, client wants it =)

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  • Pass pre-requisite check information from Config file in InstallShield

    - by sameer
    Hi, I'm trying to achieve a requirement in Pre-requisites part of my package: The package should be able to check for the presence of a specific Operating System or Microsoft Patch on the target machine and block installation if the specified OS&patch is not found. I want to pass this information from Configuration xml or ini file, so that installer need not to be edited and build again for changes in requirements. Any ideas on how to achieve this!!

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  • Url rewriting : prevent to display xml

    - by Frank
    Edit : I've got an aspx file (default.aspx) that loads a flash file (index.swf), but this swf needs a xml file (foo.xml) to load correctly. However, I would like to block any request aiming directly at the xml file. Is it possible, using a rewritting engine (isapi_rewrite for example) to detect if the xml file is being 'hotlinked' or being loaded by the 'index.swf'(inside default.aspx)? Any ideas? Thank you.

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  • Drupal blocks are syncing?

    - by Kevin
    I am trying to enable a new theme on a site running Drupal 6.16. I enable it fine, it has its own namespace in the theme and theme registry. However when you go to the Blocks section, changing a block here will affect that blocks placement in all the other themes, and vice versa. Is this normal behavior? Where should I begin looking to solve this issue?

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  • Can I Define Exceptions to Eclipse cleanup rules?

    - by Henrik Paul
    Most often the cleanup rules (Preferences Java Code Style Clean Up) in Eclipse work perfectly and create nice-looking code. But sometimes, especially with comments and concatenated string snippets (like inline SQL queries), the cleanup just messes things up, and destroys my formatting. Is there a way to say to Eclipse "Don't touch this block of text! I have formatted it just the way I like, and you would make it just less readable"?

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  • vb.net datadrig view get each cell value

    - by Gbolahan
    hello i'm trying to get the first value of a datagrid cell value but it keeps looping trough and returns the last value. here is the code: Dim cell As DataGridViewCell txtoccupier.Text = "" Try For Each cell In dgvREcord.CurrentRow.Cells() txtoccupier.Text = cell.Value.ToString Next Catch ex As Exception MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error) Exit Try End Try record eample: id name email 1 test [email protected] it returns only [email protected] but i want to get only the id which is 1 thanks for your help

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  • Imageiio can't create imageinput stream

    - by pie154
    When using imageio.imageio.read iget a can't create ImageInput Stream. I have a catch exception around it so the program survives but i was wondering if theres a way to put an if statement round it that checks to see if it falied and then attempt to read it again if it did. basically asking if there is a test for exceptions?

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  • Get username from URL in PHP

    - by pojomx
    Hi, i want something like this: http://www.someniceandreliableurl.com/username and catch the username. I want to make something like twitters/facebook/etc quick urls... twitter.com/username How can i make something like this with php? =) thank you in advance.

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  • Char * reallocation in C++

    - by JTom
    Hi, I need to store a certain amount of data in the "char *" in C++, because I want to avoid std::string to run out of memory, when exceeding max_size(). But the data comes in data blocks from the network so I need to use reallocation every time I get the data block. Is there any elegant solution for char * reallocation and concatenation in C++?

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  • Is it good practice to separate code into blocks?

    - by LM
    If I have a method that does multiple, related things, is it good practice to stick each "thing" that the method does into a seperate block? Ex. { int var //Code } { int var //More Code } It would help reduce the number of local variables, and make the code more readable, but I'm not sure if it's a good idea.

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