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  • generate php classes in bash

    - by Derek
    i have this script: #!/bin/bash if [[ -z "$1" ]] ; then echo "Class is required" exit 1; fi if [[ -z "$2" ]] ; then package="Default" else package=$2; fi echo "<?php /** * $1.class.php * * Vcard class file. * @name Project * @author Author * @link http://www.domain.com * @copyright Copyright © 2011 * @package $package * @version 1.0 */ /** * The main $1 class * @package $package */ class $1 { /** * Constructor setup. */ public function __construct() { } /** * Destructor setup. */ public function __destruct() { } } " > $1.class.php php -l $1.class.php echo "Done"; if i do: ./generate.sh my_class it creates everything with my_class. how can i modify this to: MyClass? i need to use MyClass for the filename, and the class name etc... later in the code i use the argument (in this case my_class) for some other purposes. thanks

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  • An html input box isn't being displayed, Firebug says it has style="display: none" but I haven't don

    - by Ankur
    I have placed a form on a page which looks like this: <form id="editClassList" name="editClassList" method="get" action="EditClassList"> <label> <input name="class-to-add" id="class-to-add" size="42" type="text"> </label> <label> <input name="save-class-btn" id="save-class-btn" value="Save Class(es)" type="submit"> </label> </form> But when it get's rendered by a browser it comes out like this: <form id="editClassList" name="editClassList" method="get" action="EditClassList"> <label> <input style="display: none;" name="class-to-add" id="class-to-add" size="42" type="text"> </label> <label> <input name="save-class-btn" id="save-class-btn" value="Save Class(es)" type="submit"> </label> </form> For some reason style="display: none;" is being added, and I cann't understand why. This results in the text box not displaying.

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  • Java: refactoring static constants

    - by akf
    We are in the process of refactoring some code. There is a feature that we have developed in one project that we would like to now use in other projects. We are extracting the foundation of this feature and making it a full-fledged project which can then be imported by its current project and others. This effort has been relatively straight-forward but we have one headache. When the framework in question was originally developed, we chose to keep a variety of constant values defined as static fields in a single class. Over time this list of static members grew. The class is used in very many places in our code. In our current refactoring, we will be elevating some of the members of this class to our new framework, but leaving others in place. Our headache is in extracting the foundation members of this class to be used in our new project, and more specifically, how we should address those extracted members in our existing code. We know that we can have our existing Constants class subclass this new project's Constants class and it would inherit all of the parent's static members. This would allow us to effect the change without touching the code that uses these members to change the class name on the static reference. However, the tight coupling inherent in this choice doesn't feel right. before: public class ConstantsA { public static final String CONSTANT1 = "constant.1"; public static final String CONSTANT2 = "constant.2"; public static final String CONSTANT3 = "constant.3"; } after: public class ConstantsA extends ConstantsB { public static final String CONSTANT1 = "constant.1"; } public class ConstantsB { public static final String CONSTANT2 = "constant.2"; public static final String CONSTANT3 = "constant.3"; } In our existing code branch, all of the above would be accessible in this manner: ConstantsA.CONSTANT2 I would like to solicit arguments about whether this is 'acceptable' and/or what the best practices are.

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  • How do I synchronize GUI-Elements?

    - by anonymous2500
    Hello, I have a little problem with my java-program. I wanna use Observer, to synchronize two GUIs. But I can't synchronize the JComponent / JButton elements. For example: I have a GUI-Class which implements the Observer-Class: public class GUI extends JFrame implements Observer I have a second "GUI"-Class which extends the JButton-Class and makes changes on a specific Button-Element. public class Karte extends JButton{ ... this.setEnabled(false); ... How do I synchronize this Button via Observable? I have already tried to use "extends Observable" in this class, but the "setEnabled()" method is explicit for the JButton-Class, which is not Observable! Can someone help? Thanks.

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  • how can i check all ul of nested checkboxes

    - by Mike
    Question: I have a category listing which some categories have children, I am trying to create a ALL category that when clicked, will check all sibling checkboxes in that same category. e.g; clicking ALL underneath the MUSIC category would check blues, jazz, rock n roll Code: HTML: <ul name="events-categories" id="events-categories"> <li><input type="checkbox" name="category-events" value="185" placeholder="" id="category-185" class="events-category"> CONVENTIONS <ul class="event-children"> <li><input type="checkbox" name="child-category-all" value="" class="events-child-category-all">ALL</li> <li><input type="checkbox" name="child-category-190" value="190" id="child-category-190" class="child events-child-category">SCIENCE</li> <li><input type="checkbox" name="child-category-191" value="191" id="child-category-191" class="child events-child-category">TECHNOLOGY</li> </ul> </li> <li><input type="checkbox" name="category-events" value="184" placeholder="" id="category-184" class="events-category"> MUSIC <ul class="event-children"> <li><input type="checkbox" name="child-category-all" value="" class="events-child-category-all">ALL</li> <li><input type="checkbox" name="child-category-189" value="189" id="child-category-189" class="child events-child-category">BLUES</li> <li><input type="checkbox" name="child-category-188" value="188" id="child-category-188" class="child events-child-category">JAZZ</li> <li><input type="checkbox" name="child-category-187" value="187" id="child-category-187" class="child events-child-category">ROCK N ROLL</li> </ul> </li> <li><input type="checkbox" name="category-events" value="186" placeholder="" id="category-186" class="events-category"> TRIBUTES</li> </ul>? CSS: .event-children { margin-left: 20px; list-style: none; display: none; }? jQuery So Far: /** * left sidebar events categories * toggle sub categories */ $('.events-category').change( function(){ console.log('showing sub categories'); var c = this.checked; if( c ){ $(this).next('.event-children').css('display', 'block'); }else{ $(this).next('.event-children').css('display', 'none'); } }); $('.events-child-category-all').change( function(){ var c = this.checked; if( c ){ $(this).siblings(':checkbox').attr('checked',true); }else{ $(this).siblings(':checkbox').attr('checked',false); } });? jsfiddle: http://jsfiddle.net/SENV8/

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  • Can I use a string variable to reference a class variable?

    - by rson
    Here's the scenario: I have an external swf file with x number of movieclips in its library that I load into a containing swf. Each MC in the external swf is linked with a class name and referenced on frame 1 as such var unique1:lineSequence1 = new lineSequence1(); the unique1 variable name will match a string variable I create in the containing swf: function initLines():void{ lineLoader = new Loader(); lineLoader.load(new URLRequest("theLines.swf")); //load external swf lineLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, linesLoaded); } function linesLoaded(e:Event):void{ var loadedswf:MovieClip = e.target.content as MovieClip; var initialLines = projects[0].pageid; //projects is an xmllist trace("initialLines: "+initialLines); //returns "initialLines: unique1" lines_holder_mc.addChild(loadedswf.[initialLines]); } I would like to use the initialLines variable as the reference to unique1 instead of hardcoding unique1 into loadedswf.unique1 to reference said variable in the loaded swf.

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  • Database schema to store AND, OR relation, association

    - by user455387
    Many thanks for your help on this. In order for an entreprise to get a call for tender it must meet certain requirements. For the first example the enterprise must have a minimal class 4, and have qualification 2 in sector 5. Minimal class is always one number. Qualification can be anything (single, or multiple using AND, OR logical operators) I have created tables in order to map each number to it's given name. Now I need to store requirements in the database. minimal class 4 Sector Qualification 5.2 minimal class 2 Sector Qualifications 3.9 and 3.10 minimal class 3 Sector Qualifications 6.1 or 6.3 minimal class 1 Sector Qualifications (3.1 and 3.2) or 5.6 class Domain < ActiveRecord::Base has_many :domain_classes has_many :domain_sectors has_many :sector_qualifications, :through => :domain_sectors end class DomainClass < ActiveRecord::Base belongs_to :domain end class DomainSector < ActiveRecord::Base belongs_to :domain has_many :sector_qualifications end class SectorQualification < ActiveRecord::Base belongs_to :domain_sector end create_table "domains", :force => true do |t| t.string "name" end create_table "domain_classes", :force => true do |t| t.integer "number" t.integer "domain_id" end create_table "domain_sectors", :force => true do |t| t.string "name" t.integer "number" t.integer "domain_id" end create_table "sector_qualifications", :force => true do |t| t.string "name" t.integer "number" t.integer "domain_sector_id" end

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  • check for a span class content and then update the quantity using jquery?

    - by PD24
    I have code code here: //Check current if (parseInt($("#Quantity").val()) < 25) { // If it is less than 25 then set it to 25 $("#Quantity").attr("value", "25"); } It checks if the quantity box has less than 25 and if it is, adds 25 to the box. The problem is on a particular product i need to check IF my pages contains: <span class="ProductNameText">This is product ABC</span> This is a work around because the customer only has 2 products which dont require 25 quantity. Ideally i would want to check if a page contained Kit Option form fields and then add 25 to the box. Any ideas on how to check for a span and then update the quantity. But the quantity shouldnt be forced, so if the user wants 6 items they should be able to add that figure.

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  • First-time contractor question: how do I handle web hosting?

    - by abeger
    I've started doing a little freelance web work and I've got to build a site for a client. The client doesn't currently have a hosting service, so either I or they are going to have to set it up. Traditionally, how does this work out? Do I set it up and then transfer ownership to them when I'm done? Do I leave it to them to set it up? If they're going to be paying for the hosting directly, does that affect anything? Basically, I'm brand new at all this and any and all advice on how to handle hosting would be greatly appreciated.

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  • EJB / JSF java.lang.ClassNotFoundException: com.ericsantanna.jobFC.dao.DAOFactoryRemote from [Module "com.sun.jsf-impl:main" from local module loader

    - by Eric Sant'Anna
    I'm in my first time using EJB and JSF, and I can't resolve this: 20:23:12,457 Grave [javax.enterprise.resource.webcontainer.jsf.application] (http-localhost-127.0.0.1-8081-2) com.ericsantanna.jobFC.dao.DAOFactoryRemote from [Module "com.sun.jsf-impl:main" from local module loader @439db2b2 (roots: C:\jboss-as-7.1.1.Final\modules)]: java.lang.ClassNotFoundException: com.ericsantanna.jobFC.dao.DAOFactoryRemote from [Module "com.sun.jsf-impl:main" from local module loader @439db2b2 (roots: C:\jboss-as-7.1.1.Final\modules)] I'm getting this when I do an action like a selectOneMenu or a commandButton click. DAOFactory.class @Singleton @Remote(DAOFactoryRemote.class) public class DAOFactory implements DAOFactoryRemote { private static final long serialVersionUID = 6030538139815885895L; @PersistenceContext private EntityManager entityManager; @EJB private JobDAORemote jobDAORemote; /** * Default constructor. */ public DAOFactory() { // TODO Auto-generated constructor stub } @Override public JobDAORemote getJobDAO() { JobDAO jobDAO = (JobDAO) jobDAORemote; jobDAO.setEntityManager(entityManager); return jobDAO; } JobDAO.class @Stateless @Remote(JobDAORemote.class) public class JobDAO implements JobDAORemote { private static final long serialVersionUID = -5483992924812255349L; private EntityManager entityManager; /** * Default constructor. */ public JobDAO() { // TODO Auto-generated constructor stub } @Override public void insert(Job t) { entityManager.persist(t); } @Override public Job findById(Class<Job> classe, Long id) { return entityManager.getReference(classe, id); } @Override public Job findByName(Class<Job> clazz, String name) { return entityManager .createQuery("SELECT job FROM " + clazz.getName() + " job WHERE job.nome = :nome" , Job.class) .setParameter("name", name) .getSingleResult(); } ... TriggerFormBean.class @ManagedBean @ViewScoped @Stateless public class TriggerFormBean implements Serializable { private static final long serialVersionUID = -3293560384606586480L; @EJB private DAOFactoryRemote daoFactory; @EJB private TriggerManagerRemote triggerManagerRemote; ... triggerForm.xhtml (a portion with problem) </p:layoutUnit> <p:layoutUnit id="eastConditionPanel" position="center" size="50%"> <p:panel header="Conditions to Release" style="width:97%;height:97%;"> <h:panelGrid columns="2" cellpadding="3"> <h:outputLabel value="Condition Name:" for="conditionName" /> <p:inputText id="conditionName" value="#{triggerFormBean.newCondition.name}" /> </h:panelGrid> <p:commandButton value="Add Condition" update="conditionsToReleaseList" id="addConditionToRelease" actionListener="#{triggerFormBean.addNewCondition}" /> <p:orderList id="conditionsToReleaseList" value="#{triggerFormBean.trigger.conditionsToRelease}" var="condition" controlsLocation="none" itemLabel="#{condition.name}" itemValue="#{condition}" iconOnly="true" style="width:97%;heigth:97%;"/> </p:panel> </p:layoutUnit> In TriggerFormBean.class if comments daoFactory we get the same exception with triggerManagerRemote, both annotated with @EJB. I'm don't understand the relationship between my DAOFactory and the "Module com.sun.jsf-impl:main"... Thanks.

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  • Why my onsubmitg is not firing - Spring

    - by GigaPr
    Hi, i have a controller public class EditUserController extends BaseController { public EditUserController() { setCommandClass(User.class); setCommandName("editaUser"); } public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { ModelAndView modelAndView = new ModelAndView("editUser"); String id = request.getParameter("id"); if(!id.isEmpty()) { User user = this.userServiceImplementation.get(Integer.parseInt(id)); modelAndView.addObject("editaUser", user); } return modelAndView; } } and the view <form:form method="POST" commandName="editaUser" cssClass="addUserForm"> <div class="floatL"> <div class="padding5"> <div class="fieldContainer"> <strong>First Name:</strong>&nbsp; </div> <form:errors path="firstName" cssClass="error"/> <form:input path="firstName" cssClass="textArea" /> </div> <div class="padding5"> <div class="fieldContainer"> <strong>Last Name:</strong>&nbsp; </div> <form:errors path="lastName" cssClass="error"/> <form:input path="lastName" cssClass="textArea" /> </div> </div> <div class="floatR"> <div class="padding5"> <div class="fieldContainer"> <strong>Username:</strong>&nbsp; </div> <form:errors path="username" cssClass="error"/> <form:input path="username" cssClass="textArea" /> </div> <div class="padding5"> <div class="fieldContainer"> <strong>Password</strong>&nbsp; </div> <form:errors path="password" cssClass="error"/> <form:input path="password" cssClass="textArea"/> </div> </div> <input type="submit" class="floatR" value="Save" > </form:form> and the bean definition looks like <bean name="/editUser.htm" class="com.rssFeed.mvc.EditUserController"> <property name="userServiceImplementation" ref="userServiceImplementation"/> <property name="commandName" value="editaUser" /> <property name="successView" value="users"/> <property name="sessionForm" value="true"/> </bean> I populate the view using the querystring but i would lke to update the record in the database on click of the submit button. i tried to insert a on submit method protected ModelAndView onSubmit(Object command, BindException bindException) throws Exception { return new ModelAndView(getSuccessView()); } but it never fires What is the problem i do not get it?? thanks

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  • How to change name attribut value from twig

    - by taieb baccouch
    I am using Symfony version 2.3 and twig version 1.0. and I'm trying to change the name attribut value. Here is my code : <div class="control-group"> {{ form_label(form.menuTitle, null, {'label_attr': {'class': 'control-label'}}) }} {{ form_errors(form.menuTitle)}} <div class="controls"> <div class="span12"> {{ form_widget(form.menuTitle, {'attr': {'class': 'span6'}}) }} </div> </div> </div> The rendering code : <div class="control-group"> <label class="control-label required" for="smart_contactbundle_contact_menuTitle">Menu title</label> <div class="controls"> <div class="span12"> <input type="text" id="smart_contactbundle_contact_menuTitle" name="smart_contactbundle_contact[menuTitle]" required="required" maxlength="255" class="span6"> </div> </div> </div> I want to change name="smart_contactbundle_contact[menuTitle]" to name="menuTitle"

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  • Is it possible to start an activity from a regular java class?

    - by Yotam
    In my ActionBarSherlock I have the same menu items for all activities, so it seems unwise to define onClick handlers in each activity - they all do the same. Instead I created a class called MyClickListener that implements com.actionbarsherlock.view.MenuItem.OnMenuItemClickListener, and in there I have a simple switch block that starts the appropriate activity. Problem is that Intent constructor's first argument is of type Context, and even when I pass this to MyClickListener's constructor, I can't start any activity. The same goes for every method that has a Context object as a parameter. Is there a way to work around it? What is a context object? Thanks

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  • C# WCF and Object Inheritence

    - by Michael Edwards
    I have the following setup of two classes: [SerializableAttribute] public class ParentData{ [DataMember] public string Title{get;set;} } [DataContract] public class ChildData : ParentData{ [DataMember] public string Abstract{get;set;} } These two classes are served through a WCF service. However I only want the service to expose the ChildData class to the end user but pull the marked up DataMember properties from the parent. E.g. The consuming client would have a stub class that looked like: public class ChildData{ public string Title{get;set;} public string Abstract{get;set;} } If I uses the parent and child classes as above the stub class only contains the Abstract property. I have looked at using the KnownType attribute on the ChildData class like so: [DataContract] [KnownType(typeOf(ParentData)] public class ChildData : ParentData{ [DataMember] public string Abstract{get;set;} } However this didn't work. I then applied the DataContract attribute to the ParentData class, however this then creates two stub classes in the client application which I don't want. Is there any way to tell the serializer that it should flatten the inheritance to that of the sub-class i.e. ChildData

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  • How can you get the first digit in an int (C#)?

    - by Dinah
    In C#, what's the best way to get the 1st digit in an int? The method I came up with is to turn the int into a string, find the 1st char of the string, then turn it back to an int. int start = Convert.ToInt32(curr.ToString().Substring(0, 1)); While this does the job, it feels like there is probably a good, simple, math-based solution to such a problem. String manipulation feels clunky. Edit: irrespective of speed differences, mystring[0] instead of Substring() is still just string manipulation

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  • IE 8 Automatically Closing <header> tag

    - by djthoms
    Background I am currently working on the final QA of a responsive website and I'm having an issue with IE 8 and IE 7. My client deals with government contracting so their website needs to be compatible with IE 8 and IE 7. I am using Modernizr with html5shiv built in. I am loading Modernizr in the footer of a WordPress theme that was custom built for this project. I'm not missing a doctype or any other obvious code. I am using the following scripts, all of which are loaded in the footer of WordPress: jQuery 1.10.1 Modernizr 2.6.3 (click for config) respond.js 1.3.0 superfish jQuery Waypoints 2.0.3 jQuery Waypoints Sticky 2.0.3 The Situation I'm having an issue with IE 8 automatically closing a <header> tag. First, I have used two utilities to check this issue: IETester IE 11 emulated to IE 8 w/ IE 8 User agent Here is the correct output <div class="wrapper main-header"> <header class="container"> <div class="sixteen columns alpha omega"> <div class="eight columns alpha omega logo"> <a href="http://example.com"><img src="http://example.com/wp-content/uploads/2013/10/logo.png" alt="Example"></a> </div> <div class="wrapper main-navigation desktop"> <nav id="nav" class="six columns alpha omega"> ... </nav> <div class="eight columns alpha omega overlay" style="display: none;"> ... </div> <div class="two columns alpha omega menu-ss"> ... </div> </div><!-- .wrapper.main-navigation --> </div><!-- /.sixteen.columns --> </header><!--/header--> </div><!-- /.main-header --> What IE 8 is rendering: <div class="wrapper main-header"> <header class="container"></header> <div class="sixteen columns alpha omega"> <div class="eight columns alpha omega logo"> <a href="http://example.com"><img src="http://example.com/wp-content/uploads/2013/10/logo.png" alt="Example"></a> </div> <div class="wrapper main-navigation desktop"> <nav id="nav" class="six columns alpha omega"> ... </nav> <div class="eight columns alpha omega overlay" style="display: none;"> ... </div> <div class="two columns alpha omega menu-ss"> ... </div> </div><!-- .wrapper.main-navigation --> </div><!-- /.sixteen.columns --> </header><//header><!--/header--> </div><!-- /.main-header --> What I have Tried Loading html5shiv with IE conditional in the <head> Loading Modernizr in the <head> I have looked at these Stackoverflow questions/answers: html 5 tags foorter or header in ie 8 and ie 7 html5 not rendering header tags in ie IE 8 self closing tags automatically Any assistance with this is greatly appreciated! I would really really really like to finish this website over the weekend. I've been banging my head against a wall for the past few hours over this issue. Update Here are some images from browsershack to cut out the emulation. I tested the site virtually with Windows 7 and WIndows XP (IE 8 & IE 7). http://www.browserstack.com/screenshots/0d7c1d6dd22927c20495e67f07afe8934957b4d1

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  • What are the drawbacks of this Classing format?

    - by Keysle
    This is a 3 layer example of my classing format function __(_){return _.constructor} //class var _ = ( CLASS = function(){ this.variable = 0; this.sub = new CLASS.SUBCLASS(); }).prototype; _.func = function(){ alert('lvl'+this.variable); this.sub.func(); } _.divePeak = function(){ alert('lvl'+this.variable); this.sub.variable += 5; } //sub class _ = ( __(_).SUBCLASS = function(){ this.variable = 1; this.sub = new CLASS.SUBCLASS.DEEPCLASS(); }).prototype; _.func = function(){ alert('lvl'+this.variable); this.sub.func(); } //deep class _ = ( __(_).DEEPCLASS = function(){ this.variable = 2; }).prototype; _.func = function(){ alert('lvl'+this.variable); } Before you blow a gasket, let me explain myself. The purpose behind the underscores is to accelerate the time needed to specify functions for a class and also specify sub classes of a class. To me it's easier to read. I KNOW, this does interfere with underscore.js if you intend to use it in your classes. I'm sure _.js can be easily switched over to another $ymbol though ... oh wait, But I digress. Why have classes within a class? because solar.system() and social.system() mean two totally different things but it's convenient to use the same name. Why user underscores to manage the definition of the class? because "Solar.System.prototype" took me about 2 seconds to type out and 2 typos to correct. It also keeps all function names for all classes in the same column of texts, which is nice for legibility. All I'm doing is presenting my reasoning behind this method and why I came up with it. I'm 3 days into learning OO JS and I am very willing to accept that I might have messed up.

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  • How to split this string and identify first sentence after last '*'?

    - by DaveDev
    I have to get a quick demo for a client, so this is a bit hacky. Please don't flame me too much! :-) I'm getting a string similar to the following back from the database: The object of the following is to do: * blah 1 * blah 2 * blah 3 * blah 4. Some more extremely uninteresting text. Followed by yet another sentence full of extrememly uninteresting text. Thankfully this is the last sentence. I need to format this so that each * represents a bullet point, and the sentence after the last * goes onto a new line, ideally as follows: The object of the following is to do: blah 1 (StackOverflow wants to add bullet points here, but I just need '*') blah 2 blah 3 blah 4. Some more extremely uninteresting text. Followed by yet another sentence full of extrememly uninteresting text. Thankfully this is the last sentence. It's easy enough to split the string by the * character and replace that with <br /> *. I'm using the following for that: string description = GetDescription(); description = description.Replace("*", "<br />*"); // it's going onto a web page. but the result this gives me is: The object of the following is to do: blah 1 blah 2 blah 3 blah 4. Some more extremely uninteresting text. Followed by yet another sentence full of extrememly uninteresting text. Thankfully this is the last sentence. I'm having a bit of difficulty identifying the fist sentence after the last '*' so I can put a break there too. Can somebody show me how to do this?

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  • Why does one column seem to load first in Wordpress?

    - by Cynthia
    I have a Wordpress site that is doing something very bizarre. If you go to: http://digitaldemo.net/joy/krippen-a-b-c/ When it loads, the main content div loads on the right hand side of the page and then once the sidebar loads, THEN it gets pushed over to where it ought to be. It's only really noticable in Firefox, but I'd like to find out what is causing it and fix the issue. Any ideas? Many thanks!

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  • Order of operations in C. ++ vs |=, which occurs first?

    - by chris
    I have the following code that I'm reading through: if( (i%2) == 0 ){ *d = ((b & 0x0F) << 4); } else{ *d++ |= (b & 0x0F); }; I'm looking specifically at the else statement and wondering in what order this occurs? I don't have a regular C compiler, so I can't test this. When we are performing *d++ |= (b & 0x0F);, what order does this occur in?

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  • Why won't gcc compile a class declaration as a reference argument?

    - by Jorge
    This compiles fine in Visual studio, but why not in XCode? class A() {}; someMethod(A& a); someMethod(A()); //error: no matching function call in XCode only :( Is this bad form? it seems annoying to have to write the following every time: A a(); someMethod(a); //successful compile on Xcode Am i missing something? I am not very experienced so thank you for any help!

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  • Is the use of union in this matrix class completely safe?

    - by identitycrisisuk
    Unions aren't something I've used that often and after looking at a few other questions on them here it seems like there is almost always some kind of caveat where they might not work. Eg. structs possibly having unexpected padding or endian differences. Came across this in a math library I'm using though and I wondered if it is a totally safe usage. I assume that multidimensional arrays don't have any extra padding and since the type is the same for both definitions they are guaranteed to take up exactly the same amount of memory? template<typename T> class Matrix44T { ... union { T M[16]; T m[4][4]; } m; }; Are there any downsides to this setup? Would the order of definition make any difference to how this works?

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