Search Results

Search found 28957 results on 1159 pages for 'single instance'.

Page 465/1159 | < Previous Page | 461 462 463 464 465 466 467 468 469 470 471 472  | Next Page >

• How do I use objc_getAssociatedObject/objc_getAssociatedObject inside an object?

  - by leo

  If I use objc_setAssociatedObject/objc_getAssociatedObject inside a category implementation to store a simulated instance variable in a setter method, how would I access the key in the getter method since any variables declared in the setter method would be outside the scope of the getter method?

  Read the article

• Is it possible to create a DateFormatter which converts a two-digit year into a four-digit year?

  - by DR

  In my Java application I use a DateFormat instance to parse date inputs. DateFormat fmt; fmt = DateFormat.getDateInstance(DateFormat.DEFAULT) // dd.MM.yyyy for de_DE The problem is that the user insists to enter dates in the form 31.12.11. Unfortunately this is parsed to 31.12.11. (0011-12-31 in ISO format) Instead I want the parsed date to become 31.12.2011 (2011-12-31 in ISO format). Can I modify the date format to somehow parse inputs that way?

  Read the article

• Qt send signal to main application window

  - by dumbquestion

  I need a QDialog to send a signal to redraw the main window. But connect needs an object to connect to. So I must create each dialog with new and explicitly put a connect() every time. What I really need is a way of just sending MainWindow::Redraw() from inside any function and having a single connect() inside Mainwindow to receive them. But you can't make a signal static and dialogs obviously don't inherit from MainWindow.

  Read the article

• type inference still need enhance,any better suggestion for this example?

  - by iamsungod

  for instance in Clojure: user=> (map #(* % 2) (concat [1.1 3] [5 7])) (2.2 6 10 14) but in Scala: scala> List(1.1,3) ::: List(5, 7) map (_ * 2) <console>:6: error: value * is not a member of AnyVal List(1.1,3) ::: List(5, 7) map (_ * 2) ^ Here ::: obtain a list of type List,oops then failed. Can any coding more intuitively like Clojure above?

  Read the article

• Why would one use REST instead of Web services?

  - by AngryHacker

  Attended an interesting demo on REST today, however, I couldn't think of a single reason (nor was one presented) why REST is in anyway better or simpler to use and implement than a Web Services stack. What are some of the reasons Why anyone in the "real world" use REST instead of the Web Services?

  Read the article

• How to Update TreeViewItem's IsExpanded property to false in code behind?

  - by viky

  I am working with WPF TreeView control. I am creating a hierarchical data structure and assigning it to ItemsSource and it will generate TreeviewItems automatically. By default I use IsExpanded of TreeViewItem to true. But in a particular case, I want to set IsExpanded property to false. So that treeview loading doesn't take time to generate all items. How can I set that in code since I don't have reference to TreeViewItem's instance at that time?

  Read the article

• mysql procedure to update numeric reference in previous rows when one is updated

  - by markcial

  There's a table like this one ______________________ | id | title | order | |----------------------| | 1 | test1 | 1 | |-----|--------|-------| | 2 | test2 | 2 | |-----|--------|-------| | 3 | test3 | 3 | |-----|--------|-------| | 4 | test4 | 4 | '----------------------' when i introduce in my mysql shell a single update to a row $sql UPDATE `table` SET order=1 WHERE id=3; And then procedure or method resamples order column in the before update lower values to get its order renewed like this ______________________ | id | title | order | |----------------------| | 1 | test1 | 2 | |-----|--------|-------| | 2 | test2 | 3 | |-----|--------|-------| | 3 | test3 | 1 | |-----|--------|-------| | 4 | test4 | 4 | '----------------------' Any help would be appreciated, thanks!

  Read the article

• Store java.util.Calendar field into one column

  - by Rasika

  How to store java.util.Calendar field into one column with Datanucleus JDO. By default it is stored into two columns (millisecs, Timezone) with following JDO metadata. field name="startDate" serialized="true" embedded="true" persistence-modifier="persistent" What need to be changed in metadata to store it into single column (Timestamp)? Is it posible query (JDOQL) on calendar field when it is in two clumn?

  Read the article

• Why is hibernate open session in view considered a bad practice?

  - by HeDinges

  And what kind of alternative strategies do you use for avoiding LazyLoadExceptions? I do understand that open session in view has issues with: Layered applications running in different jvm's Transactions are committed only at the end, and most probably you would like the results before. But, if you know that your application is running on a single vm, why not ease your pain by using an open session in view strategy?

  Read the article

• Why is C# statically typed?

  - by terrani

  I am a PHP web programmer who is trying to learn C#. I would like to know why C# requires me to specify the data type when creating a variable. Class classInstance = new Class(); Why do we need to know the data type before a class instance?

  Read the article

• Getting an array of nodes related to a category term with the Drupal API

  - by JoseMarmolejos

  I have a simple one level deep vocabulary taxonomy. Something like Vocabulary-Term-Node. What I want to know is if there's a built in function to get an array of nodes related to a single term, something like taxonomy_select_nodes() but that would return an array of nodes instead of a string.

  Read the article

• [UITableViewController] Function that cell displays again

  - by marcy

  Objective-c. UITableViewController. Please teach the name of the function that cell displays again. (instance method)

  Read the article

• SQL - First row inserted every day for the past X days

  - by okie.floyd

  A tough SQL question (I'm using postgres by the way). I need the first row inserted every day for the past X days. one of my columns is a timestamp, which i hold the time inserted, and another column is the row id. If it's not possible to get the first row inserted every day, i at least need a unique one; a single row for every day for the past x days. Any suggestions? Thanks okie

  Read the article

• Is there a "fancy" Ruby way to check whether a local variable is both defined and evaluates to true without using ands and ors?

  - by Steven Xu

  This is quite a quick question. I currently use do_this if (testvar ||= false) Which works just fine. But this approach unnerves me because while fast, it does not short-circuit like defined?(testvar) && testvar does, and it instantiates and assigns a value to a local variable that is subsequently never used, which seems inefficient. I enjoy the very reasonable fact that instance variables are nil before assignment, but I'd like for the situation to be just as easy for local variables.

  Read the article

• Why should I deploy as another site (deploy) user?

  - by Mirko

  What are the benefits of deploying your site as a special 'deploy' user? And should I run my main domain and subdomains as a single user?

  Read the article

• Getting started with mvim, how to manage a project?

  - by zengr

  Hi, I have started out with macvim and now fairly comfortable with the navigation (on a single file) and now I need to write a whole project (say rails) using mvim. In textmate, you have mate project_dir which opens the project in a side drawer, so my question is: Is there a similar feature in mvim? How can a complete project managed in traditionally in macvim? Links to some write-ups are welcomed.

  Read the article

• Hadoop: Processing large serialized objects

  - by restrictedinfinity

  I am working on development of an application to process (and merge) several large java serialized objects (size of order GBs) using Hadoop framework. Hadoop stores distributes blocks of a file on different hosts. But as deserialization will require the all the blocks to be present on single host, its gonna hit the performance drastically. How can I deal this situation where different blocks have to cant be individually processed, unlike text files ?

  Read the article

• How to specify number of headers in section UITableView.

  - by Mr. McPepperNuts

  if ([tempArray containsObject: [sectionInfo indexTitle]]) { return nil; }else { [tempArray addObject: [sectionInfo indexTitle]]; return [sectionInfo indexTitle]; } return [sectionInfo indexTitle]; The code above groups the cells in alphabetical order but displays a blank header instead of the appropriate title. Could this possibly be because I did not specify the number of headers? This would naturally be a single header for every letter in the alphabet.

  Read the article

• What is the difference between the various unistd.h under /usr/include in Linux ?

  - by Marwan

  Under the /usr/include directory in Linux i entered the command: find -type f -name unistd.h which gave the following output: ./unistd.h ./linux/unistd.h ./asm-generic/unistd.h ./bits/unistd.h ./asm/unistd.h ./sys/unistd.h my question is, what is the purpose of each unistd.h, since there is only one definiton of that file in the single unix specification ? Thanks in advance.

  Read the article

• How do I see if something is getting touched?

  - by Nathan

  Is there some way in objective C to see if an instance is being touched such as: - (void)viewDidLoad { [super viewDidLoad]; if (recordButton.touched = YES) { NSLog (@"record button got touched"); } } Can't they just make these things easy? Could someone help?

  Read the article

• How to create a subject helper method in Rspec2

  - by Hedgehog

  In rpsec 2.12 I expected this helper method definition to work: module X private def build_them(type) puts 'Catching the star' end end context 'public/private instance methods' do subject{ Class.new { extend(::X) } } def subject.build(type) puts "Throwing a star" build_them(type) end it{ should respond_to :build} end The actual result is a failed spec: expected #<Class:0x00000002ea5f90> to respond to :build I expected the example to pass Any suggestions on how to do this correctly?

  Read the article

• Java: when to use static methods

  - by KP65

  Hello, I am wondering when to use static methods? Say If i have a class with a few getters and setters, a method or two, and i want those methods only to be invokable on an instance object of the class. Does this mean i should use a static method? e.g Obj x = new Obj(); x.someMethod or Obj.someMethod (is this the static way?) I'm rather confused!

  Read the article

• Is there a good .Net CSS aggregator that combines style sheets and minifies them?

  - by vfilby

  I am looking to see if there is an open source/free project that provides a CSS manager. I am looking for this mainly for performance tweaking and hoping there is a readymade project rather than building from scratch. Features I am looking for include: Combines multiple .css files into a single css file Optionally minifies the resulting .css file Works well with .Net (a user control, custom handler, etc) Is there a project out that that handles this?

  Read the article

• multiple params in a mysql statement

  - by Kaartz

  i use this statement for a single where condition ('SELECT * FROM users WHERE id = ?', 1) if I want to check two conditions, how would I do that ('SELECT * FROM users WHERE id=? AND age=?', 1,23)- is this correct?

  Read the article

• UITableView Reusable cells

  - by Michael

  Can someone explain me the way reusable cells works for single table view? How many reusable cells a datasource should create? So far in all samples I've seen only one. Would one even need more?

  Read the article

< Previous Page | 461 462 463 464 465 466 467 468 469 470 471 472  | Next Page >