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  • Exposing members or make them private in Python?

    - by deamon
    Is there a general convention about exposing members in Python classes? I know that this is a case of "it depends", but maybe there is a rule of thumb. Private member: class Node: def __init__(self): self.__childs = [] def add_childs(self, *args): self.__childs += args node = Node() node.add_childs("one", "two") Public member: class Node2: def __init__(self): self.childs = [] node2 = Node2() node2.childs += "one", "two"

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  • ASP.NET MVC Inheriting from ProfileBase

    - by Glen
    I have 2 related issues. I inherited from ProfileBase and I have a couple of properites as such public SomeType PropertyName { get { return (SomeType)base["PropertyName"]; } set { base["PropertyName"] = value; Save(); } } I also have a User class (UserId, UserName, Profile, LastActivityDate) that has 2 additional properties out of the profile that I retrieve in my View to show a list of Users (i.e. @Model.Profile.PropertyName). However, everytime I access a property (from my View) it seems to update the LastActivityDate in the aspnet_Users table because when I show the LastActivityDate as well as the profile properties on my screen the LastActivtyDate is out of sync with the database. Also there is a LastActivityDate property available in my profile which unfortunately is not available and is in fact set to null and throws an exception when accessing it saying the property UserName is null. So the static Create method provided by ProfileBase seems to retrieve the correct profile properties but does not set the base's UserName property even though you pass in a UserName parameter to the Create method. Is this a internal bug? I was kind of hoping if by accessing the property because the LastActivityDate is updated then I could store that value to update my LastActivityDate in my User class before it is rendered to the page. The only way I can think of doing it is: public SomeType PropertyName { get { SomeType result = (SomeType)base["PropertyName"]; OnLastActivityDateChanged(); return result; } set { base["PropertyName"] = value; } } then in my User class: ... public MyProfile() { Profile.LastActivityDateChanged += Profile_LastActivityDateChanged(); } ~MyProfile() { Profile.LastActivityDateChanged -= Profile_LastActivityDateChanged(); } ... void Profile_LastActivityDateChanged(object sender, EventArgs e) { //Run a query to get the latest LastActivityDate this.LastActivityDate = ... } It seems I have to make 1 call to retrieve the full list to my aspnet_Users table then another call for each row just to get the latest activity date. ARGGGGHHH!!! Am I going about this the wrong way! I put an ajax refresh hyperlink next to each User row and when I click it, immediately after loading the page, the value changes. Therefore my suspision is valid that calling a property via the inherited profilebase class updates the value. Is there a workaround? It is a bit miss leading when my page says User Smith has no activity for 4 days then I click my ajax refresh link (or refresh the whole page for that matter) and now it says Smith was active but it was just me meally showing the page that indirectly caused an activity read event.

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  • How to pass parameters dynamically in PHP?

    - by user198729
    I need to pass the $route to its inner function,but failed: function compilePath( $route ) { preg_replace( '$:([a-z]+)$i', 'pathOption' , $route['path'] ); function pathOption($matches) { global $route;//fail to get the $route } } I'm using php5.3,is there some feature that can help?

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  • iPhone Coredata saving error

    - by satyam
    I'm trying to create core data application. Some times when trying to save data, i'm seeing following error: Error: NSInvalidArgumentException, Reason: * -_referenceData64 only defined for abstract class. Define -[NSTemporaryObjectID_default _referenceData64]!, Description: * -_referenceData64 only defined for abstract class. Define -[NSTemporaryObjectID_default _referenceData64]! I didn't understand why this error is coming and how to avoid it. Can some one help me please.

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  • Reloading a Flickr request from author

    - by user1797325
    I have my flickr gallery coded, but I want to be able to click on the Author's name and the page will reload just with the images from that author. Here is my current code <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>Outbrain Test Gallery</title> <link href="styles.css" rel="stylesheet" type="text/css" /> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script> <script src="jquery.masonry.min.js"></script> <script type="text/javascript"> $(window).load(function(){ $('#flkr').masonry({ // options itemSelector : '.tiles', isResizable: true, }); }); </script> <script type="text/javascript">$(document).ready(function() { $('<ul />').prependTo('#flkr'); $.getJSON('http://api.flickr.com/services/feeds/photos_public.gne?lang=en-us&format=json&jsoncallback=?', function(data) { $.each(data.items, function(i,item) { var squares = (item.media.m).replace('_m.jpg', '_q.jpg'); if(i <= 20){ $('<img/>').attr({ alt: item.title, src: squares, height: '150', width: '150' }).appendTo('#flkr ul').wrap('<li class="tiles"><a href="' + item.link + '"></a><p class="title">' + item.title + '</p><p class="author"><strong>By:</strong> ' + item.author + '</p><p class="date"><strong>Uploaded: </strong>' + item.published + '</p></li>'); } }); }); }); </script> </head> <body> <ul id="flkr"></ul> </body> </html>

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  • C++ code parser/processor library

    - by uray
    is there any library that parse a source code of C++ to produce lets say, call graph, class inheritance tree, flow control, class member list or anything as a ready to use graph or structure in code (not in diagram image). to make it more clear, suppose to generate call graph image, there will be a process like this: ` C++ source -> parser -> intermediate structure -> renderer -> call graph image ^ | [i need this] `

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  • Overriding a method...

    - by Godcode
    public class Testing extends JDialog { public MyClass myClass; public Testing() { } } given the above code, is it possible to override a method in myClass in Testing class? say myClass has a method named computeCode(), will it be possible for me to override it's implementations in Testing? sorry it's been a long time since I've coded.

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  • How does polymorph ambiguity distinction work?

    - by Pentius
    Given I have a class with two constructors: public class TestClass { ObjectOne o1; ObjectTwo o2; public TestClass(ObjectOne o1) { // .. } public TestClass(ObjectTwo o2) { // .. } } What happens, if I call: new TestClass(null); How to determine the correct method to call? And who determines that? Are there differences between Java and other OOP languages?

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  • CSS- removing horizontal space in list menu using display inline property

    - by Kayote
    Hi All, Im new to CSS and have a set target of learning & publishing my website in CSS by the end of the month. My question: Im trying to build a CSS horizontal menu with hover drop downs, however, when I use the 'display: inline' property with li (list) items, I get horizontal spaces between the li (list) items in the bar. How do I remove this space? Here is the html: <div id="tabas_menu"> <ul> <li id="tabBut0" class="tabBut">Overview</li> <li id="tabBut1" class="tabBut">Collar</li> <li id="tabBut2" class="tabBut">Sleeves</li> <li id="tabBut3" class="tabBut">Body</li> </ul> </div> And here is the CSS: #tabas_menu { position: absolute; background: rgb(123,345,567); top: 110px; left: 200px; } ul#tabas_menu { padding: 0; margin: 0; } .tabBut { display: inline; white-space: list-style: none; background: -webkit-gradient(linear, 0% 0%, 0% 100%, from(rgba(255,142,190,1)),to(rgba(188,22,93,1))); background: -moz-linear-gradient(top, rgba(255,142,190,1), rgba(188,22,93,1)); font-family: helvetica, calibri, sans-serif; font-size: 16px; font-weight: bold; line-height: 20px; text-shadow: 1px 1px 1px rgba(99,99,99,0.5); -moz-border-radius: 0.3em; -moz-box-shadow: 0px 0px 2px rgba(0,0,0,0.5); -webkit-border-radius: 0.3em; -webkit-box-shadow: 0px 0px 2px rgba(0,0,0,0.5); padding: 6px 18px; border: 1px solid rgba(0,0,0,0.4); margin: 0; } I can get the space removed using the 'float: left/right' property but its bugging me as to why I cannot achieve the same effect by just using the display property.

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  • Iphone calendar integrating problem

    - by Rkm
    I am integrating calendar to my application , after adding calendar i am getting error , please help me anyone where it is problem . "_OBJC_CLASS_$_KalViewController", referenced from: objc-class-ref-to-KalViewController in FertilityAppAppDelegate.o "_KalDataSourceChangedNotification", referenced from: _KalDataSourceChangedNotification$non_lazy_ptr in EventKitDataSource.o (maybe you meant: _KalDataSourceChangedNotification$non_lazy_ptr) "_OBJC_CLASS_$_EKEventViewController", referenced from: objc-class-ref-to-EKEventViewController in FertilityAppAppDelegate.o

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  • Naming guidelines with C#.

    - by VansFannel
    Hello! I have this class: class DoSomething { private int timesDone; ... } Which is the right way to named variable 'timesDone'? Sometimes I see named as m_timesDone. Is this correct? Where I can find information about naming guidelines? Thank you!

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  • PHP + Mongodb error

    - by mdm414
    Hi, I followed the windows installation instructions in mongodb's website but I still can't connect to MongoDB through PHP because of this error: Class 'Mongo' not found Why isn't the file containing the Mongo Class not being loaded? Thanks

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  • display icon in menuitem (Firefox)

    - by Omar Abid
    I use the following code <menu image="chrome://mecho/content/ic.png" label="Mecho Submission Form" class="menu-iconic" id="mechi-menu" insertafter="context-copylink"> Firefox displays an icon in the menu; however when I use the following (for the submenu) <menuitem label="App" image="chrome://mecho/content/icons/app.png" class="menu-iconic" onclick="mecho.add('katzcd','App')"/> It doesn't show up!! any idea?

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  • How do you make a wrapped div fill the window horizontally?

    - by Alex Parkinson
    I have a div which is contained by another 960px-wide centered div. I'm adding a background to the inner div which should expand all the way to the window's edges horizontally, essentially escaping the boundaries of its container. If I apply a large negative margin and equal amount of padding, this works on the left side, but the right side causes a scroll bar to appear. Does anyone know how I can achieve this without causing scroll bars?

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  • Django admin - remove field if editing an object

    - by John McCollum
    I have a model which is accessible through the Django admin area, something like the following: # model class Foo(models.Model): field_a = models.CharField(max_length=100) field_b = models.CharField(max_length=100) # admin.py class FooAdmin(admin.ModelAdmin): pass Let's say that I want to show field_a and field_b if the user is adding an object, but only field_a if the user is editing an object. Is there a simple way to do this, perhaps using the fields attribute? If if comes to it, I could hack a JavaScript solution, but it doesn't feel right to do that at all!

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  • Question regarding the method local innerclasses accesing the local variables of the method

    - by flash
    Hi I was going through the SCJP book about the innerclasses, and found this statement, it goes something like this. "A method local class can only refer to the local variables which are marked final" and in the explanation the reason specified is about the scope and lifetime of the local class object and the local variables on the heap, But I am unable to understand that.am I missing anything here about 'final'??

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  • Efficient way to build a MySQL update query in Python

    - by ensnare
    I have a class variable called attributes which lists the instance variables I want to update in a database: attributes = ['id', 'first_name', 'last_name', 'name', 'name_url', 'email', 'password', 'password_salt', 'picture_id'] Each of the class attributes are updated upon instantiation. I would like to loop through each of the attributes and build a MySQL update query in the form of: UPDATE members SET id = self._id, first_name = self._first name ... Thanks.

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  • SQL: HAVING clause

    - by Craig Johnston
    See the following SQL statement: SELECT datediff("d", MAX(invoice.date), Now) As Date_Diff, MAX(invoice.date) AS max_invoice_date, customer.number AS customer_number FROM invoice INNER JOIN customer ON invoice.customer_number = customer.number GROUP BY customer.number If the the following was added: HAVING datediff("d", MAX(invoice.date), Now) > 365 would this simply exclude rows with Date_Diff <= 365? What should be the effect of the HAVING clause here?

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