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  • Getters and Setters: Code smell, Necessary Evil, or Can't Live Without Them [closed]

    - by Avery Payne
    Possible Duplicate: Allen Holub wrote “You should never use get/set functions”, is he correct? Is there a good, no, a very good reason, to go through all the trouble of using getters and setters for object-oriented languages? What's wrong with just using a direct reference to a property or method? Is there some kind of "semantical coverup" that people don't want to talk about in polite company? Was I just too tired and fell asleep when someone walked out and said "Thou Shalt Write Copious Amounts of Code to Obtain Getters and Setters"? Follow-up after a year: It seems to be a common occurrence with Java, less so with Python. I'm beginning to wonder if this is more of a cultural phenomena (related to the limitations of the language) rather than "sage advice". The -1 question score is complete for-the-lulz as far as I am concerned. It's interesting that there are specific questions that are downvoted, not because they are "bad questions", but rather, because they hit someone's raw nerve.

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  • Set a class for an element in a PHP include()

    - by paracaudex
    I have an identical horizontal menu at the top of all of my pages, which I add using a PHP include() statement. In my stylesheet I want to have a class where if the user is on a particular page, the menu item corresponding to that page will have a different color. So, more or less: #dropdown { background-color:blue; } #dropdown .active { background-color:green; } But, since the menu comes from the PHP include, it's always the same. How can I write some PHP or JavaScript that adds class="active" to the appropriate menu item for each page?

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  • jquery child element as trigger

    - by Dan w
    When "forum-title" is clicked, I want "subtopic-frame" within the parent "forum-topics-head" to expand. There are multiple "forum-topics-head" (with all associated children) on this page. The way I have it now, the "forum-topics-head" is the trigger, but I want the "forum-title" to be the trigger. html: <div class="forum-topic-head"> <div class="forum-title">Forum Title</div> <div class="subtopic-frame"> subtopic 1 subtopic 2 </div> </div>

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  • Business Object desgin

    - by Dan
    I have a question about how I setup my BO's. I setup the BO's to contain all of my properties of the object as well as the business logic to satisfy the business rules. I decided to make all of the methods static, but I'm not sure if that was the right decision. Someone told me to split my BO's into an Entity Object of just properties and then a BO of just methods that do business rules, and don't make the methods static. Does anyone have some experience with the way i've set this up? Any examples of how it might work better for future growth? Thanks!

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  • IE7 float and clear on the same element

    - by bGiraffe
    Hi geeks, Here is my code, <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>[your title]</title> <style type="text/css"> .a, .b, .c { float: left; } .b { clear: left; } </style> </head> <body> <div class="a">1</div> <div class="b">2</div> <div class="c">3</div> </body> </html> In IE8, firefox, chrome, safari, opera, the output will be: 1 23 However in IE7: 13 2 I have search for solutions two days already... anyone can help? Cheers, bGiraffe

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  • Java - how to tell class of an object?

    - by lkm
    Given a method that accepts as a parameter a certain supertype. Is there any way, within that method, to determine the actual class of the object that was passed to it? I.e. if a subtype of the allowable parameter was actually passed, is there a way to find out which type it is? If this isn't possible can someone explain why not (from a language design perspective)? Thanks Update: just to make sure I was clear void doSomething(MyType myType) { //determine if myType is MyType OR one of its subclasses } Since the method signature specifies the parameter as being MyType, then how can one tell if the object is actually a subtype of MyType (and which one).

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  • How to sort a list by the 2nd tuple element in python and C#

    - by user350468
    I had a list of tuples where every tuple consists of two integers and I wanted to sort by the 2nd integer. After looking in the python help I got this: sorted(myList, key=lambda x: x[1]) which is great. My question is, is there an equally succinct way of doing this in C# (the language I have to work in)? I know the obvious answer involving creating classes and specifying an anonymous delegate for the whole compare step but perhaps there is a linq oriented way as well. Thanks in advance for any suggestions.

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  • avoid extra xmlns:xsi while adding a attribute to xml root element in C#.net

    - by Rakesh kumar
    Please help me. First pls forgive me if i am wrong. i am createing a xmlfile using c#.net . my Code is like XmlDocument d = new XmlDocument(); XmlDeclaration xmlDeclaration = d.CreateXmlDeclaration("1.0", "utf-8", null); d.InsertBefore(xmlDeclaration,d.DocumentElement); XmlElement root = d.CreateElement("ITRETURN","ITR","http://incometaxindiaefiling.gov.in/ITR1"); XmlAttribute xsiNs = d.CreateAttribute("xsi:schemaLocation", "http://www.w3.org/2001/XMLSchema-instance"); xsiNs.Value = "http://incometaxindiaefiling.gov.in/main ITRMain10.xsd"; root.SetAttributeNode(xsiNs); //root.SetAttribute("xsi:schemaLocation", "http://www.w3.org/2001/XMLSchema-instance"); root.SetAttribute("xmlns:ITR1FORM", "http://incometaxindiaefiling.gov.in/ITR1"); root.SetAttribute("xmlns:ITR2FORM", "http://incometaxindiaefiling.gov.in/ITR2"); root.SetAttribute("xmlns:ITR3FORM", "http://incometaxindiaefiling.gov.in/ITR3"); root.SetAttribute("xmlns:ITR4FORM", "http://incometaxindiaefiling.gov.in/ITR4"); d.AppendChild(root); d.Save("c://myxml.xml"); and i am getting output like this - - root node But My requirement is like + any value please help

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  • Basic class returns onject reference instead of Array

    - by php-b-grader
    I have very basic class: class Customer { protected $id; protected $customer; public function __construct($customer_id) { $this->id = $customer_id; return $this->set_customer(); } protected function set_customer() { $query = mysql_query("SELECT * FROM customer WHERE id = '$this->id'"); $this->customer = mysql_fetch_row($query); return $this->customer; } } $customer = new Customer($order->customer->id); print_r($customer); This is not doing what I want it to but I understand why... $customer returns a reference to the Customer Object... But what I want is the MySQL row array from the mysql_fetch_row() call... What am I missing?

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  • IE 8 specifying background-color changes element behavior

    - by Mateo
    I have an absolutely positioned div on which I am trying to trigger mouseenter and mouseleave events. In IE8/7 with the background-color of the div left unspecified (so that it defaults to transparent), the mouseenter/leave events are not firing when the cursor crosses the div's boundary, only somewhere in the middle of the div and when the cursor is over any text within the div. When I attempt to debug the problem by adding a background color to the div (e.g. background-color: green), the problem magically goes away. The div's box model is honored perfectly and mouseenter/leave fire as when expected. It's only when the div's background color is left unspecified (or even explicitly set to transparent) that it doesn't behave correctly. Any ideas? Googling for this IE bug/quirk is coming up with nothing.

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  • how to access package explorer element in eclipse plugin

    - by Ankit Malik
    hi i am making an eclipse plugin which make a ui on right clicking a project in eclipse workspce . the ui contains text fields , package explorer for the current project and directory explorer for current project. i have successfully made a ui which appears on clicking a menu item on right clicking the project but it seems i can't make any jface or swt ui since they are not visible when we are using eclipse command hadlers .so in order to overcome it i made dialog pages but they have limited dialog like directorty dialog and file dialog and that too for entire window directory..... but i want package explorer and directory explorer for the project i just chose like it happens when u try making a new class in a project the browse buttons just show packages and directory struture w.r.t to current selection am i doin things wrong or is there a way out please suggest .....

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  • How to remove an element from opener window viewsource using javascript

    - by spj
    Hi Step 1 I've two screens one is parent and the other one is child. On click of a button in the parent window the child popup will open. Step 2 On click of a button in child i'm displaying the html(viewsource) of parent window in a textbox(.net) and holding in a hidden variable hdnSource too. Step 3 I've 4 checkboxes in the child window. If the checkbox is not checked, then that part of html should be removed. eg: cbxPersonal, cbxProfessional if cbxProfessional is unchecked I should remove divProfessional from html which is in hdnSource and display in the textbox Can anyone help me to do the 3rd part of coding. Since the html is in the variable, I'm not able to find the div with document.getElementById

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  • PHP search multidimensional array for value, then place that element at start of array

    - by BobFlemming
    I need to search this array: cars - [0] -make : Ford -model: Escort -year: 1991 [1] -make: Honda -model: Civic -year: 1996 [2] -make: Vauxhall -model: Astra -year: 1972 And if (for example) the model is "Civic" , place that 'car' at position 0. So the end array would be like: cars - [0] -make: Honda -model: Civic -year: 1996 [1] -make : Ford -model: Escort -year: 1991 [2] -make: Vauxhall -model: Astra -year: 1972 I've tried some usort variations: function typeSort($a, $b) { if ($a['model'] == 'Civic' ) { return 0; } return ($a['model'] < $b['model']) ? -1 : 1; } but this is just returning 1

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  • CSS variable width element to fill in space

    - by Gary Volland
    In a form, I would like the input:text to fill the remain space after the label to the form is left and right justified. The label have number of characters so I can't set a fixed width on the label. Code example: <fieldset> <legend>User Info</legend> <p><label>First Name :</label><input type="text"...></p> <p><label>Last Name : </label><input type="text"...></p> <p><label>Completed Email Address :</label><input type="text"...></p> </fieldset> How can I style the input to fill the remaining space after the text. Thanks.

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  • Pointers, links, object and reference count

    - by EugeneP
    String a = "a"; // allocate memory and write address of a memory block to a variable String b = "b"; // in a and b hold addresses b = a; // copy a address into b. // Now what? b value is completely lost and will be garbage collected //* next step a = null; // now a does not hold a valid address to any data, // still data of a object exist somewhere, yet we cannot get access to it. Correct me if there's a mistake somewhere in my reflexions. My question is: suppose anInstance object of type Instance has a property ' surname ' anInstance.getSurname() returns "MySurname". now String s = anInstance.getSurname(); anInstance = null; question is - is it true that getSurname value, namely MySurname will not be garbage collected because and only because it has active reference counter 0, and if other properties of anInstance have a zero reference counter, they'll be garbage collected?

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  • how can I declare a value deep in an object tree using variable properties in javascript

    - by joshs
    I am trying to have a javascript object tree behave like a php associative array in the following way. var key1 = 'a'; var key2 = 'b'; var key3 = 'c'; var obj[key1][key2][key3] = 'd'; However, in javascript I believe you need to define each property/object pair individually, forming deeper leaves. Something like: var obj[key1] = {}; var obj[key1][key2] = {}; ... Is there a way to simplify or shorten this script? Thanks

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  • Group SQL tables in Microsoft SQL Server Management Studio object explorer

    - by MainMa
    I have a table which has approximately sixty tables, and other tables are added constantly. Each table is a part of a schema. A such quantity of tables makes it difficult to use Microsoft SQL Server Management Studio 2008. For example, I must scroll up in object explorer to access database related functions, or scroll down each time I need to access Views or Security features. Is it possible to group several tables to be able to expand or collapse them in Object Explorer? Maybe a folder may be displayed for each schema, letting collapse the folders I don't need to use?

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  • Prevent click event on the clicked element?

    - by nainy
    I have a click event on the body of my document: $("body").on('click.findElem', function(e) { e.stopPropagation(); e.preventDefault(); self.hinter(e.target); return false; }); It basically catches the clicked target and does something to it. However, there are some targets that already have a click event on them, and they prevent my click from being executed at all. How do I overcome that issue? I tried unbinding it, but the click doesn't even work at all to actually execute the unbinding.

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  • Rails: include related object in JSON output

    - by Codezy
    I have a note class that belongs to a user (ie a user can create many notes). clip from my notes controller class NotesController < ApplicationController before_filter :authenticate_user! respond_to :html, :xml, :json # GET /notes # GET /notes.xml def index @notes = Note.includes(:user).order("created_at DESC") respond_with @notes end When I ask for the index in json results for example /notes.json, it returns the notes but only returns user_id for the user object. I would like it to also include user.username (and would be curious how to have the whole user object embedded). Bonus question: I could not find a way to make the column show as author_id and have it relate back to user. If this is easy to do, how do you do it?

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  • Java Session Like Object

    - by scriptmonster
    I have been developing a project and in this project i have designed my code to do the same job after a specified time interval continuously. The job that wanted to be done has a lot of distinct cycles. The interval is small to execute them normally thus i used threads. Until that point everything is clear for me. To decrease the process and information transaction i wanted to put an session like object that holds the given data and provide it to any thread at anytime. With this object i plan to not query the same configuration information from database at everytime but if it exists on the session take it else query and store on session. I'm not sure how to implement this structure. Regards,

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  • Jquery Append() and remove() element

    - by BandonRandon
    Hi, I have a form where I'm dynamically adding the ability to upload files with the append function but I would also like to be able to remove unused fields. Here is the html markup <span class="inputname">Project Images: <a href="#" class="add_project_file"><img src="images/add_small.gif" border="0"></a></span> <span class="project_images"> <input name="upload_project_images[]" type="file" /><br/> </span> Right now if they click on the "add" gif a new row is added with this jquery $('a.add_project_file').click(function() { $(".project_images").append('<input name="upload_project_images[]" type="file" class="new_project_image" /> <a href="#" class="remove_project_file" border="2"><img src="images/delete.gif"></a><br/>'); return false; }); To remove the input box i've tried to add the class "remove_project_file" then add this function. $('a.remove_project_file').click(function() { $('.project_images').remove(); return false;}); I think there should be a much easier way to do this. Maybe i need to use the $(this) function for the remove. Another possible solution would be to expand the "add project file" to do both adding and removing fields. Any of you JQuery wizards have any ideas that would be great

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  • IE7: element showing even with display: none

    - by dmr
    I am trying to hide a "required" message when the page is first shown. On FF and IE8 this works, but for some reason the message shows on IE7. Here is the HTML: <div id="passwordDivRequired" class="requiredMsg"> <img src="images/required.png" /> Required </div> And here is the CSS: .requiredMsg img{ width: 1.5em; height: 1.5em; position: relative; bottom: -.4em; } div .requiredMsg { color: #BF5754; display: none; }

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