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  • jQuery grab html

    - by Happy
    We have link to some page (with html code, on the same domain), that page have one img, which attributes title and alt are equal. Script must open link (no showing on the page), grab the src attribute of img which title=alt, and throw the value into some variable. Is it possible to do? Thanks.

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  • True or False: Good design calls for every table to have a primary key, if nothing else, a running i

    - by Velika
    Consider a grocery store scenario (I'm making this up) where you have FACT records that represent a sale transaction, where the columns of the Fact table include SaleItemFact Table ------------------ CustomerID ProductID Price DistributorID DateOfSale Etc Etc Etc Even if there are duplicates in the table when you consider ALL the keys, I would contend that a surrogate running numeric key (i.e. identity column) should be made up, e.g., TransactionNumber of type Integer. I can see someone arguing that a Fact table might not have a unique key (though I'd invent one and waste the 4 bytes, but how about a dimension table?

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  • convert table of input values into 2D array or struct?

    - by Henry
    What's the easiest way to convert a table of values (2D grid like Excel), into a 2D array or struct in ColdFusion? Thought of using dot in the name and eval them to become struct, but AFAIK name attribute of input field can only contains alpha numeric and underscore, and first char must be an alpha char.

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  • RSA key length and export limitations

    - by Alex Stamper
    I know, there are a lot of limitations to the length of used key (import and export limitations for nearly each country). Usually, it varies from 64 to 256 bits. To use more bits, it is obligatory to ask permission from authorities. But it is recommended to use 1024 bits keys for RSA as minimum! Does it mean that I cannot just use RSA without any problems with law and so on?

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  • Object leak using "retain"

    - by Abhinav
    I have a property defined with retain attribute which I am synthesizing: @property (nonatomic, retain) UISwitch *mySwitch; And inside my loadView I am doing this: self.mySwitch = [[UISwitch alloc] initWithFrame:CGRectMake(0, 0, 40, 20)]; And finally inside my dealloc I am doing this: self.mySwitch = nil; Am I leaking this object (mySwitch) as I have used one alloc? Should I autorelease it while assigning it frame? Please suggest.

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  • How to unit test private methods in BDD / TDD?

    - by robert_d
    I am trying to program according to Behavior Driven Development, which states that no line of code should be written without writing failing unit test first. My question is, how to use BDD with private methods? How can I unit test private methods? Is there better solution than: - making private methods public first and then making them private when I write public method that uses those private methods; or - in C# making all private methods internal and using InternalsVisibleTo attribute. Robert

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  • How to handle authorization in the view layout

    - by mathk
    Authorize attribute are good to do some access control base on Action but suppose that I have some UI element in the layout that should note be output unless the user is authorize. I could possibly set some boolean in the ViewBag but that is not the good solution I guess. Somewhere in the Layout.cshtml: @if (ViewBag.IsAuthorized) { <li>@Html.ActionLink("Index", "Admin")</li> } Let me know if there is a better solution. Thanks.

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  • If-else-if versus map

    - by perezvon
    Hi, Suppose I have such an if/else-if chain: if( x.GetId() == 1 ) { } else if( x.GetId() == 2 ) { } // ... 50 more else if statements What I wonder is, if I keep a map, will it be any better in terms of performance? (assuming keys are integers)

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  • how do i declare a global variable in VBA

    - by Nimrod
    I wrote the following section: Function find_results_idle() Public iRaw As Integer Public iColumn As Integer iRaw = 1 iColumn = 1 and i get the error messege: "invalid attribute in Sub or Function" do you know what i did wrong? i tried instead of "Public" to use "Global" but got the same problem. I tird to declare the function itself as "Public" but no good... what do i do wrong? thanks.

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  • Safest communication method between applications on same machine

    - by Radu
    What is the safest communication method between two applications on the same machine, both Java and C/C++ clients with a Java server. Are SSL sockets safe enough or they can be broken by "man in the middle" attacks? As i saw in the documentation and code samples, JSSE retrieves private/public keys and certificates from keystore files which a malicious user can see. The only thing that you can hide in the code is the password used to unlock the keystores. Can hackers retrieve that password?

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  • Real world examples of tree structures

    - by Arec Barrwin
    I'm looking for some examples of tree structures that are used in commercial/free software projects, modern or old. I can see examples on wikipedia, but I am looking for more concrete examples and how they're used. For example primary keys in databases are (from what I've read) stored in BST structure or a variation of the BST (feel free to correct me on this) My question isn't limited Binary Search Trees (BSTs), it can include any variation such as red-black, AVL and so on.

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  • IBOutlet on properties and exposition of the class

    - by Espuz
    Apple, for memory management issues, recommend defining outlets on properties, not in the attribute declaration. But, as far as I know, declaring properties exposes the class to external classes, so this could be dangerous. On UIViewController we have the main view definition and the logic, so MVC is slightly cheated in this cases. What is the beteer approach, Apples's recommendation for memory-management or armored classes?

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  • jQuery find by value

    - by Happy
    There is a link with title and some value: <a href="http://site.com/someid/" title="Use ctrl + >">next</a> How to find this link and throw its href attribute to some variable?

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  • iOS Core Data migration: moving something from an entity into a file

    - by Tim Sullivan
    I have a scenario where I'm moving the contents of a blob stored in a core data entity into a file. I need a way to export that data during a migration, where I know the entity that's being converted and save the blob to a file, writing the location of that file into the converted entity's appropriate attribute. I can't seem to find a way to do this. The docs regarding the Three Stage Migration seem to indicate what can be done, but I'm not sure where to define things, or what exactly to define.

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  • Urgent help needed on How to update NSMutableDictionary. My code doesn't work.

    - by dawatson833
    I've populated an array using. arrSettings = [[NSMutableArray alloc] initWithContentsOfFile:[self settingsPath]]; The file is a plist with the root as an array and then a dictionary with three three keys defined as number. I've also tried setting the keys to string. I display the values in the plist file on a view using. diaper = [[arrSettings objectAtIndex:0] objectForKey:@"Diaper Expenses"]; oil = [[arrSettings objectAtIndex:0] objectForKey:@"Oil Used"]; tree = [[arrSettings objectAtIndex:0] objectForKey:@"Wood Used"]; This code works fine, the values in the dictionary are assigned to the variables and they are displayed. The user can make changes and then press a save button. I use this code to extract the dictionary part of the array so I can update it. The assignment to editDictionary works. I've double checked the key names including case and that is correct. editDictionary = [[NSMutableDictionary alloc] init]; editDictionary = [arrSettings objectAtIndex:0]; NSNumber *myNumber = [NSNumber numberWithFloat:diaperAmount]; [editDictionary setValue:myNumber forKey:@"Diaper Expenses"]; myNumber = [NSNumber numberWithFloat:oilAmount]; [editDictionary setValue:myNumber forKey:@"Oil Used"]; myNumber = [NSNumber numberWithFloat:treeAmount]; [editDictionary setValue:myNumber forKey:@"Wood Used"]; In this example I've used a nsnumber. But I've also tried the xxxAmount field as part of SetValue instead of creating a NSNumber. Neither implementation works. Several strange things happen. Sometimes the first two setvalue statements work, but the last setvalue fails with a EXC_BAD_ACCESS failure. Other times the first setValue fails with the same error. I have no idea why the first two sometimes work. I'm at a loss of what to do next. I've tried several implentations and none of them work. Also, in the debugger how can I display the editDictionary elements. I can see editDictionary, but I don't know how to display the individual elements.

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