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• creating managed objects using code in xcode & core-data

  - by themadpeacock

  New to objective-c xcode and core-data so sorry for the remedial question. I have set up a very simple data model: Entity1 and Entity2, both contain a single attribute (String) and a one-to-many relationship with the other. I want to scan Entity1 and depending on the results of the scan create one or more Entity2 objects that link to Entity1. How can I do this? I don’t understand how I create Entity2 type objects in code and how I would define the relationship to the Entity1 object they are related to. I come from a SQL programming background where inserting elements into the Entity2 table with the ID of the related Entiry1 entry is easy. I can’t get my head around the xcode core-data abstraction and would appreciate any help.

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• jsTree: Prevent before and after TYPE, only use inside

  - by Nic Hubbard

  I am using jsTree which is very nice. When dragging and dropping, I don't really care for the before and after types, I only want to use inside. Meaning, I am only concerned about that parent that a child is dropped into, rather than where the order is with other elements INSIDE the parent. So, I wanted to build my callback, so it always refers to the parent node that it is inside. But, it is not fool proof, yet. onmove : function (NODE,REF_NODE,TYPE,TREE_OBJ,RB) { if (TYPE == 'inside') { alert('Item to move:'+$(NODE).attr('rel')+' to '+$(REF_NODE).attr('rel')+' '+TYPE); } else if (TYPE == 'after') { alert('Item to move:'+$(NODE).attr('rel')+' to '+$(REF_NODE).parent().parent('li').attr('rel')+' '+TYPE); } }, Does anyone have suggestions, how I can change my callback, so that the REF_NODE is always the parent that the NODE is moved into? Rather than a sibling of, which is a child of the parent?

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• Using xsl:key to store result of boolean expression

  - by hielsnoppe

  In my transformation there is an expression some elements are repeatedly tested against. To reduce redundancy I'd like to encapsulate this in an xsl:key like this (not working): <xsl:key name="td-is-empty" match="td" use="not(./node()[normalize-space(.) or ./node()])" /> The expected behaviour is the key to yield a boolean value of true in case the expression is evaluated successfully and otherwise false. Then I'd like to use it as follows: <xsl:template match="td[not(key('td-is-empty', .))]" /> Is this possible and in case yes, how?

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• Visual Studio: Design a UserControl class that derives from an abstract base class

  - by Marcel

  Hi All, I want to have an abstract base class for some of my custom UserControl's. The reason is obvious: they share some common properties and methods (a basic implementation of some elements of an interface actually), and I want to implement them only once. I have done this by defining my abstract base class: public abstract class ViewBase : UserControl, ISomeInterface Then I went to implement one of my views, as usual, with the designer: public partial class SpecialView : UserControl //all OK Up to here all is fine. Now I replace the derivation of my SpecialView class with the abstract base class: public partial class SpecialView : ViewBase //disrupts the designer Now, the designer in Visual Studio 2008 won't work anymore, stating: The designer must create an instance of type 'ViewBase' but it cannot because the type is declared as abstract. How can I circumvent this? I just do not want to have the same code copied for all those views. Info: there is a question question with virtual methods, instead of abstract classes, but there is no suitable solution for me.

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• Using CSS, how can I make overflow:visible; contents overlap adjacent <td> cells?

  - by Structure

  I have the following CSS style code for my table: td { overflow: hidden; white-space:nowrap; } td:hover { overflow: visible; } However, when I hover over a <td> element whos contents (text) are hidden, the result is that the contents become visible but are behind the content of the adjacent cell (right side). I do not think that z-index can be applied to table cell elements, so is there a CSS attribute that I can specify within my td:hover style which will make the content of my <td> tag overlap the content in adjacent cells?

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• Objective C Array and Object Release

  - by david

  Hi, I have a newbie question regarding when to release the elements of a NSArray. See following pseudo code: NSMutalbeArray *2DArray = [[NSMutableArray alloc] initWithCapacity:10]; for (int i=0;i<10;i++) { NSMutableArray *array = [[MSMutableArray alloc] initWithCapacity:5]; for (int j=0;j<5;j++) { MyObject *obj = [[MyObject alloc] init]; [array addObject:obj]; [obj release]; } [2DArray addObject:array]; [array release]; } // use 2DArray to do something [2DArray release] My question here is, when I release 2DArray, do I need to explicitly release each of its element (array) first? Also, before I release the "array" object, do I need to release each of its element (MyObject) first? I am new to Objective C. Please help. thanks.

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• django internationlisation

  - by ha22109

  Hello I need to have multiple language support of my django admin application.I can create the messege files.But how can i change the text of my models.The heading ,fields etc .I m only able to change the static elements which are there in my template. here is example of my class class Mymodel(model.Models): id=models.IntegerField(primary_key=true) name=models.CharField(max_length=200) group=models.CharField(max_length=200) class Meta: managed=False verbose_name_plural='My admin' db_table='my_admin' one more question.In my home page it is showing my verbose name 'My admin' which i mentioned.But when i go to list page it shows me the class name 'mymodel'.Why so.Can i changed that to

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• How to read nested XML using xDocument in Silver light?

  - by Subhen

  Hi currently I have a nested XMl , having the following Structure : <?xml version="1.0" encoding="utf-8" ?> <Response><Result><item id="something" /><price na="something" /> <?xml version="1.0" encoding="UTF-8" ?><DIDL-Lite xmlns="urn:schemas-upnp-org:metadata-1-0/DIDL-Lite/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:upnp="urn:schemas-upnp-org:metadata-1-0/upnp/" xmlns:dlna="urn:schemas-dlna-org:metadata-1-0/"></Result><NumberReturned>10</NumberReturned><TotalMatches>10</TotalMatches></Response> Any help on how to read this using Xdocument or XMLReader will be really helpfull. Thanks, Subhendu

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• Is perl's each function worth using?

  - by eugene y

  From perldoc -f each we read: There is a single iterator for each hash, shared by all each, keys, and values function calls in the program; it can be reset by reading all the elements from the hash, or by evaluating keys HASH or values HASH. The iterator is not reset when you leave the scope containing the each(), and this can lead to bugs: my %h = map { $_, 1 } qw(1 2 3); while (my $k = each %h) { print "1: $k\n"; last } while (my $k = each %h) { print "2: $k\n" } Output: 1: 1 2: 3 2: 2 What are the common workarounds for this behavior? And is it worth using each in general?

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• Is perl's each function worth using?

  - by eugene y

  From perldoc -f each we read: There is a single iterator for each hash, shared by all each, keys, and values function calls in the program; it can be reset by reading all the elements from the hash, or by evaluating keys HASH or values HASH. The iterator is not reset when you leave the scope containing the each(), and this can lead to bugs: my %h = map { $_, 1 } qw(1 2 3); while (my $k = each %h) { print "1: $k\n"; last } while (my $k = each %h) { print "2: $k\n" } Output: 1: 1 2: 3 2: 2 What are the common workarounds for this behavior? And is it worth using each in general?

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• initializer_list and move semantics

  - by FredOverflow

  Am I allowed to move elements out of a std::initializer_list<T>? #include <initializer_list> #include <utility> template<typename T> void foo(std::initializer_list<T> list) { for (auto it = list.begin(); it != list.end(); ++it) { bar(std::move(*it)); // kosher? } } Since std::intializer_list<T> requires special compiler attention and does not have value semantics like normal containers of the C++ standard library, I'd rather be safe than sorry and ask.

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• merge sort recursion tree height

  - by Tony

  Hello! I am learning about recursion tree's and trying to figure out how the height of the tree is log b of n where n = 2 and one has 10 elements as input size. I am working with Merge sort. The number of times the split is done is the height of the tree as far as I understood, and the number of levels in the tree is height + 1. But if you take (for merge sort) log2 of 10 you get 1, where if you draw the tree you get at least 2 times that the recursion occurs. Where have I gone wrong? (I hope I am making sense here) NOTE: I am doing a self study, this is not homework!

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• Jface's CheckboxTreeViewer how to set initial selection

  - by Hypercube

  Hello. This question may sounds trivial, but i am struggling with the issue, so, please help if u can. So, here it is : i am using a CheckboxTreeViewer for some good reasons. I've google-it for some class usages, and i am currently able to check/uncheck all the childrens of a selected node, and to preserve the selection after a live search with a custom implementation of the StyledCellLabelProvider provider. All good so far. However, so far i am unable to programatically select one or more elements of the tree viewer after i display the widget and call the setInput() method of the viewer. So, let's assume for instance that the tree will have 10 main nodes, and 5 leafs on node 6. My question is how do i set the checked state of the 3rd leaf? Thank u.

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• Clone a div that contains "customized" jQueryUI datePicker

  - by Enrique

  I have a div that contains 3 fields You can see the image here http://imgur.com/A3tbd.jpg I'm cloning this div with this plugin http://sroucheray.org/blog/demos/jquery-dynamic-form/ My problems are: It doesn't clone correctly datePicker. I'm using validate form plugin, but I guess this plugin is not prepared to validate cloned elements Is there any easy code, other plugin or some functions I should use for doing this sequence? Verify user has filled the 3 fields of the actual div If so, clone the div and create a new set of 3 fields. Also, clone datePicker correctly If user clicks the delete button, erase last div (last 3 fields) When form submitted, post all fields correctly Thanks,

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• Memory Issues When DOM Parsing A Large XML File on Android Devices

  - by tonyc

  Hey awesome SO users, I have an Android application that parses an XML file for users and displays results in a much more mobile friendly format. The app works great for most users, but some users have lots and lots of data and the app crashes on them because it runs out of memory. Is there any way I have a DOM style XML parser quit parsing data after a certain amount of parsing? I only need the first 30 or so elements so it would make the application much more efficient. I'd like to use a SAX or pull parser instead, but the XML I'm parsing is not valid and I have no control over it. Unless anyone has some good SAX solutions that let me parse messy, invalid XML, I think DOM is the only way to go. Thanks for reading!

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• What does this web.xml error mean?

  - by jacekn

  <?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_5.xsd"> Referenced file contains errors (http://java.sun.com/xml/ns/j2ee/web-app_2_5.xsd). For more information, right click on the message in the Problems View and select "Show Details..." The errors below were detected when validating the file "web-app_2_5.xsd" via the file "web.xml". In most cases these errors can be detected by validating "web-app_2_5.xsd" directly. However it is possible that errors will only occur when web-app_2_5.xsd is validated in the context of web.xml. In details, I see a bunch of these: s4s-elt-character: Non-whitespace characters are not allowed in schema elements other than xs:appinfo and xs:documentation. Saw 'var _U="undefined";'

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• rounded textbox css

  - by user225269

  I found this code from here: http://www.cssportal.com/form-elements/text-box.htm But the problem is you can still see the rectangular shape of the textbox whenever you click inside it. What would be the fix for this? So that the highlight will go with the image with rounded corners /* Rounded Corner */ .tb5 { background: url(images/rounded.gif) no-repeat top left; height: 22px; width: 230px; } .tb5a { border: 0; width:220px; margin-top:3px; }

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• Rails "Load more..." instead of pagination.

  - by Joseph Silvashy

  I have a list of elements, and I've been using will_paginate up until now, but I'd like to have something like "load more..." at the bottom of the list. Is there an easy way to accomplish this using will_paginate or do I need to resort to some other method here? From what I know this is a better route anyhow because then I don't need a SQL count of the records. And it really doesn't matter if there are like 9,847 pages, nobody would need the records beyond the first couple pages anyhow.

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• Java - Collections.binarySearch with PriorityQueue?

  - by msr

  Hello, Can I use Collections.binarySearch() method to search elements in a PriorityQueue? Otherwise, how can I apply search algorithms to a PriorityQueue? I have this (class Evento implements Comparable): public class PriorityQueueCAP extends PriorityQueue<Evento>{ // (...) public void removeEventos(Evento evento){ Collections.binarySearch(this, evento); // ERROR! } } And I got this error: "The method binarySearch(List, T) in the type Collections is not applicable for the arguments (PriorityQueueCAP, Evento)" Why? Thanks in advance!

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• fb:request-form in iframe redirects away from facebook

  - by IkimashoZ

  I have an <fb:requestform> in an iFrame Facebook app. I have set target="_parent", so that the callback will target the parent iFrame and not itself, which seems to work as expected. But, instead of my desired file loading, I get redirected to my server. Checking the response of the requestform's POST in Firebug revealed this: <script type="text/javascript"> top.location.href = "http://www.facebook.com/login.php?api_key=***&v=1.0&req_perms=&next=http%3A%2F%2F***"; </script> I have already had this same problem when sending jQuery AJAX requests to update various elements in an iFrame. I solved the problem by making sure my headers contain P3P: CP="CAO PSA OUR". That is indeed set for this call as well (can be seen clearly in Firebug), but I still get redirected to facebook.com/login.php.

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• XML: to append xml document into the node of another document

  - by Bibhaw

  Hi all, I have to insert file1.xml elements into another file2.xml. file2.xml has several node and each node has it's node_id. is there any way to do that. let suppose : file1.xml : <root> <node_1> ......</node_1> </root> file2.xml : <root> <node> <node_id>1</node_id> </node> </root> I want ? file2.xml : <root> <node> <node_1>......</node_1> [here i want to append the file1.xml] </node> </root>

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• A tool to find and fix incomplete source code documentation

  - by Pekka

  I have several finished, older PHP projects with a lot of includes that I would like to document in javadoc/phpDocumentor style. While working through each file manually and being forced to do a code review alongside the documenting would be the best thing, I am, simply out of time constraints, interested in tools to help me automate the task as much as possible. The tool I am thinking about would ideally have the following features: Parse a PHP project tree and tell me where there are undocumented files, classes, and functions/methods (i.e. elements missing the appropriate docblock comment) Provide a method to half-way easily add the missing docblocks by creating the empty structures and, ideally, opening the file in an editor (internal or external I don't care) so I can put in the description. Optional: Automatic recognition of parameter types, return values and such. But that's not really required. The language in question is PHP, though I could imagine that a C/Java tool might be able to handle PHP files after some tweaking. Thanks for your great input!

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• CSS strikethrough different color from text?

  - by gojomo

  The HTML elements del or strike, and the CSS text-decoration property with a value line-through, may all be used for a text strike-through effect. Examples: <del>del</del> ...gives: del <strike>strike</strike> ....gives: strike <span style='text-decoration:line-through'> text-decoration:line-through </span> ...will also look the same as: text-decoration:line-through However, the strikethrough line is typically the same color as the text. Can CSS be used to make the line a different color?

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• How can I get jQuery $('.class', context) to include context itself if it matches .class?

  - by Jake

  I want to be able to match against all elements in a given context including the context element itself. Here is the code I'm using currently, but it seems inefficient. Is there a better way? Note: I'm using jQ 1.3.2, but I'll upgrade soon so I'm interested in 1.4 solutions too. var context = $('#id'); var filters = '.class1, .class2'; // take context itself if it matches filters $(context).filter(filters) // add anything matching filters inside context .add($(filters, context)) Note: .add($(f,c)) works in jQ 1.3 as .add(f,c) in jQ 1.4

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• need to generate unlimited number of unique id's with jQuery

  - by jquery n00b

  Hi all, extreme n00b here... I've got a number of elements (dynamically generated by back end so it could be quite a few) and all need a unique id. I'm trying to work out how to do this wth jQuery and not doing so well. Any help is appreciated. In the code below, I'd want each "bar" div to get a unique id, like id1, id2 etc etc <div class="foo"> <ul class="bar"> </ul> <ul class="bar"> </ul> <ul class="bar"> </ul> <ul class="bar"> </ul> </div>

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