Search Results

Search found 28707 results on 1149 pages for 'writing your own'.

Page 503/1149 | < Previous Page | 499 500 501 502 503 504 505 506 507 508 509 510  | Next Page >

• Objective C message dispatch mechanism

  - by Dolphin

  I am just staring to play around with Objective C (writing toy iPhone apps) and I am curious about the underlying mechanism used to dispatch messages. I have a good understanding of how virtual functions in C++ are generally implemented and what the costs are relative to a static or non-virtual method call, but I don't have any background with Obj-C to know how messages are sent. Browsing around I found this loose benchmark and it mentions IMP cached messages being faster than virtual function calls, which are in turn faster than a standard message send. I am not trying to optimize anything, just get deeper understanding of how exactly the messages get dispatched. How are Obj-C messages dispatched? How do Instance Method Pointers get cached and can you (in general) tell by reading the code if a message will get cached? Are class methods essentially the same as a C function (or static class method in C++), or is there something more to them? I know some of these questions may be 'implementation dependent' but there is only one implementation that really counts.

  Read the article

• Test Case Design and Responsibility

  - by Sakamoto Kazuma

  So it seems like a lot of people are playing the blame game around where I work, and it brings up an interesting question. Knowns: Requirements team writes requirements for product. Developers create their own unit tests out of requirements. Testing team creates their general tests out of requirements and past customer issues. Product released if and only if X% of testcases from Testing team passes Customer response team gets bugs from the field, and lets the testing team know about these issues. Question: If the customer ends up filing a lot of defects, who is to blame? Is it the Testing team for not covering those? Or is it the requirements team for not writing better requirements? And how does one improve upon the system?

  Read the article

• How to pass a very long string/file into RESTWebservice JAX-RS Jersey

  - by Sashikiran Challa

  Hello All, I am trying to write a webservice that takes in an XML string, does parsing of it using DOM and extract particular things I want. My XML string happens to be very long so I do not want to pass it as a @QueryParam or @PathParam. Say If I write that XML string into a file, How do I go about writing a RESTful service that takes in this file, extracts whatever I want and return the results. I am actually trying to extract some number of strings, so my output should probably be an ArrayList having all these strings. Could somebody please shed some light on how I should go about doing this. Thanks in advance

  Read the article

• Is mspec better with or without nunit?

  - by Byron Sommardahl

  I've seen mspec used with nunit on some blogs and discussions. In fact, most of the examples on the web that I've seen demonstrate mspec with some kind of nunit dependancy or integration. My team is attempting to use mspec without nunit on a new ASP.NET MVC2 project. We're not at the spec-writing stage yet, so I can't tell what is better. What it your experience with this? Are there benefits to using mspec with nunit? Without?

  Read the article

• deriving from NSTabViewItem

  - by Jonny

  I'm writing a Cocoa app. One dialog has 3 tabs, some of the tabs needs more loading time, so I want to load them lazily. Since each Tab is a NSTabViewItem class, so I'm trying to derive from it and overriding its view property. In the view getter method, I use a ViewController to load a view and returns out. In Debugging, I found NSTabViewItem -view method is get called correctly, but after that NSTabView tries to set Initial FirstResponder and crashed with message: * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'In -[NSTabViewItem setInitialFirstResponder:], the first responder must descend from the tab view item's view. (Item: Invalid responder: )' I tried to override the -initialFirstResponder method to return a sub-view of my loaded view, but it still crashes the same place. does anyone know how to get it work correctly? Also is it correct way to do this by deriving the NSTabViewItem? thanks! -Jonny

  Read the article

• Assign binding path at runtime in WPF DataTemplate

  - by Abiel

  I am writing a WPF program in C# in which I have a ListView for which the columns will be populated at runtime. I would like to use a custom DataTemplate for the GridViewColumn objects in the ListView. In the examples I have seen where the number of columns is fixed in advance, a custom DataTemplate is often created using something like the XAML below. <DataTemplate x:Key="someKey"> <TextBlock Text="{Binding Path=FirstName}" /> </DataTemplate> This DataTemplate could also later be assigned to GridViewColumn.CellTemplate in the code-behind by calling FindResource("someKey"). However, this alone is of no use to me, because in this example the Path element is fixed to FirstName. Really I need something where I can set the Path in code. It is my impression that something along these lines may be possible if XamlReader is used, but I'm not sure how in practice I would do this. Any solutions are greatly appreciated.

  Read the article

• Which version of Windows 7 for .NET Developers

  - by Dkong

  Hi, I'm looking to upgrade my laptop from Windows Vista to Windows 7. As a .NET developer I'm not interested in developing Windows 7 components at this stage, but was curious which version would suffice to Install Visual Studio/SQL Server and do some web development testing against the local instance of IIS. I don't care too much about the superfluous features of any Windows 7 editions, I just need to know which one will keep me right for running apps and writing some code. Also, does Windows 7 force the "run as administrator" against VS? Any recommendations?

  Read the article

• SO_LINGER and closing sockets(WINSOCK)

  - by Johnny Walked

  hey. im writing a multithreaded winsock application and im having some issues with closing the sockets. first of all, is there a limit for a number of simultaneously open sockets? lets say like 32 sockets all in once. i establish a connection on one of the sockets, and passing information and it all goes right. problem is when i disconnect the socket and then reconnect to the same destination, i get a RST from the server after my SYN. i dont have the code for the server app so i cant debug it. when i used SO_LINGER and it sent a RST flag at the end of each session - it worked. but i dont want to end my connections this way. when not using SO_LINGER a FIN flag was sent but it seems the connection was not really closed. any help? thanks

  Read the article

• Testing sample code in python modules

  - by Andrew Walker

  I'm in the process of writing a python module that includes some samples. These samples aren't unit-tests, and they are too long and complex to be doctests. I'm interested in best practices for automatically checking that these samples run. My current project layout is pretty standard, except that there is an extra top level makefile that has build, install, unittest, coverage and profile targets, that delegate responsibility to setup.py and nose as required. projectname/ Makefile README setup.py samples/ foo-sample foobar-sample projectname/ __init__.py foo.py bar.py tests/ test-foo.py test-bar.py I've considered adding a sampletest module, or adding nose.tools.istest decorators to the entry-point functions of the samples, but for a small number of samples, these solutions sound a bit ugly. This question is similar to http://stackoverflow.com/questions/301365/automatically-unit-test-example-code, but I assume python best practices will differ from C#

  Read the article

• In loaded object model prefix XmlDocument elements with namespace

  - by jdk

  I have a "plain" XmlDocument loaded like so: <root> <element1 /> <element2></element2> </root> and want to qualify the elements with namespaces like so while the object model is loaded <root xmlns:abc="urn:something"> <abc:element1 /> <abc:element2></abc:element2> </root> before writing it out.

  Read the article

• Ruby DEPRECATION WARNING: You are using the old router DSL which will be removed in Rails 3.1.

  - by user297221

  Hi guys. I am using rails 3 and at the moment i am writing tests for my application. I get this weird deprecation warning: DEPRECATION WARNING: You are using the old router DSL which will be removed in Rails 3.1. Please check how to update your routes file at: http://www.engineyard.com/blog/2010/the-lowdown-on-routes-in-rails-3/. (called from at /Users/jeljer/Dropbox/webCMS/config/environment.rb:6) Of course my routes file is this: WebCMS::Application.routes.draw do #... end but no luck. If I look at the place what it is pointing to in my enviroment.rb: WebCMS::Application.initialize! I did a gem cleanup without any luck. Does anybody have an idea? ps. i am using rvm with ruby 1.9.2

  Read the article

• T-SQL IsNumeric() and Linq-to-SQL

  - by cdonner

  I need to find the highest value from the database that satisfies a certain formatting convention. Specifically, I would like to fund the highest value that looks like EU999999 ('9' being any digit) select max(col) will return something like 'EUZ...' for instance that I want to exclude. The following query does the trick, but I can't produce this via Linq-to-SQL. There seems to be no translation for the isnumeric() function in SQL Server. select max(col) from table where col like 'EU%' and 1=isnumeric(replace(col, 'EU', '')) Writing a database function, stored procedure, or anything else of that nature is far down the list of my preferred solutions, because this table is central to my app and I cannot easily replace the table object with something else. What's the next-best solution?

  Read the article

• using WP_Query with custom SQL in wordpress

  - by Matt Facer

  Hi. I am writing a plugin for wordpress and I want to create my own search. I have tried to alter the wordpress search, but what I am doing is very specific with the SQL query. I am comparing lat and long coordinates and getting posts based on that. I can display posts by using the standard wpdb query, but then I don't get the other features like paging. I'd like to be able to use my SQL statement with the WP_Query function. If I'm right in thinking, I should then be able to use the paging and other features which come from the $posts global variable. Is this right?? I've googled for hours but can't find anything for plugins outside of using args to select categories etc. I simply need to send a complete SQL command - nothing else. Many thanks....

  Read the article

• Python "Every Other Element" Idiom

  - by Matt Luongo

  Hey guys, I feel like I spend a lot of time writing code in Python, but not enough time creating Pythonic code. Recently I ran into a funny little problem that I thought might have an easy, idiomatic solution. Paraphrasing the original, I needed to collect every sequential pair in a list. For example, given the list [1,2,3,4,5,6], I wanted to compute [(1,2),(3,4),(5,6)]. I came up with a quick solution at the time that looked like translated Java. Revisiting the question, the best I could do was l = [1,2,3,4,5,6] [(l[2*x],l[2*x+1]) for x in range(len(l)/2)] which has the side effect of tossing out the last number in the case that the length isn't even. Is there a more idiomatic approach that I'm missing, or is this the best I'm going to get?

  Read the article

• Will OpenGL give me any FPS improvement over CoreAnimation for scrolling a large image?

  - by Ben Roberts

  Hi, I'm considering re-writing the menu system of my iPhone app to use Open GL just to improve the smoothness of scrolling a big image (480x1900px) across the screen. I'm looking at doing this as a way to improve on using the method/solution as described here (http://stackoverflow.com/questions/1443140/smoother-uiview). This solution was a big improvement over the previous implementation but it's still not perfect and as this is the first thing the user will see I'd like it to be as flawless as possible. Will switching to OpenGL give me the sort of smooth scrolling I'm looking for? I've stayed clear of OpenGL until now as this is my first app and core animation has handled everything else I've thrown at it well enough, would be good to know if this alternative implementation is likely to work! thanks

  Read the article

• Unique identifier for an email

  - by Skywalker

  I am writing a C# application which allows users to store emails in a MS SQL Server database. Many times, multiple users will be copied on an email from a customer. If they all try to add the same email to the database, I want to make sure that the email is only added once. MD5 springs to mind as a way to do this. I don't need to worry about malicious tampering, only to make sure that the same email will map to the same hash and that no two emails with different content will map to the same hash. My question really boils down to how one would combine multiple fields into one MD5 (or other) hash value. Some of these fields will have a single value per email (e.g. subject, body, sender email address) while others will have multiple values (varying numbers of attachments, recipients). I want to develop a way of uniquely identifying an email that will be platform and language independent (not based on serialization). Any advice?

  Read the article

• MVC in a Google App Engine Java world

  - by thatismatt

  I'm coming to Java from C# & ASP.NET MVC, I'd love to find an equivalent in the Java world that I could use on the Google App Engine. I've already started to have a play with FreeMarker and even made the first steps towards writing a very simple framework. Ideally I wouldn't have to do all the hard work though, someone must have done this already! So my question is - what frameworks are there out there that would be familiar for me coming from ASP.NET MVC and I could use them on Google App Engine for Java. The key things I'd want are: Simple Routing - /products/view/1 gets mapped to the view action of the products controller with the productid of 1 Template Engine - some way of easily passing 'ViewData' to the view, and from the view easily accessing it, ideally I'd love to avoid anything that is too XMLy (thus why I like FreeMarker).

  Read the article

• rails3, gridfs and mongomapper: how to serve files? send_data?

  - by z3cko

  i am currently developing a rails3 app with mongomapper and file storage in gridfs. after some trying around, i found grip and currently also use it in the app for storing the data. so far, so good - now i am trying to get my head around serving the files to the user -- what would be the best/fastest way to achieve that? from: http://railstips.org/blog/archives/2009/12/23/getting-a-grip-on-gridfs/ there seem to be 2 ways: send_data from ruby/rails - is this a recommended way? fast enough? (i want to use passenger in the deploy setup) writing a rails metal (see http://gist.github.com/264077) - any comments or hints on how to use that with rails3? any other ideas or even examples? thanks a lot!

  Read the article

• Best Fit Scheduling Algorithm

  - by Teegijee

  I'm writing a scheduling program with a difficult programming problem. There are several events, each with multiple meeting times. I need to find an arrangement of meeting times such that each schedule contains any given event exactly once, using one of each event's multiple meeting times. Obviously I could use brute force, but that's rarely the best solution. I'm guessing this is a relatively basic computer science problem, which I'll learn about once I am able to start taking computer science classes. In the meantime, I'd prefer any links where I could read up on this, or even just a name I could Google.

  Read the article

• Are preprocessors obsolete in modern languages?

  - by Earlz

  Hello, I'm making a simple compiler for a simple pet language I'm creating and coming from a C background(though I'm writing it in Ruby) I wondered if a preprocessor is necessary. What do you think? Is a "dumb" preprocessor still necessary in modern languages? Would C#'s conditional compilation capabilities be considered a "preprocessor"? Does every modern language that doesn't include a preprocessor have the utilities necessary to properly replace it? (for instance, the C++ preprocessor is now mostly obsolete(though still depended upon) because of templates.)

  Read the article

• EnvDTE: ArgumentException when accessing the ActiveConfiguration

  - by Smith

  Hello, I'm writing an addin for Visual Studio 2008. At some point in my code, I'm attempting to access the current active configuration for a project: var configName = _Project.ConfigurationManager.ActiveConfiguration.ConfigurationName; Sometimes, in some very obscure cases, the getter for ActiveConfiguration throws an ArgumentException. Nothing in the documentation says anything about this (but given the very poor quality of the documentation, it was to be expected), and the exception's message is not helping at all. Also, ConfigurationManager is an interface, and I don't know what's the real implementation behind it, so I can't simply disassemble it in Reflector to know the cause. Any help would be greatly appreciated.

  Read the article

• Custom filename in a rolling Log4Net logfile?

  - by Brett Rigby

  Hello We have a ASP .Net application whereby we use Log4Net to log details within the app - nothing new there - and the rolling log filenames are in the usual format of: rolling-log.txt rolling-log.txt.1 rolling-log.txt.2 etc. A each user of the application adds to the logfile, the logfile can be difficult to read for a specific user's case and so, we'd like to modify the config file somehow to record the user's log details individually, each writing to a specific file, e.g. <applicationId>rolling-log.txt <applicationId>rolling-log.txt.1 <applicationId>rolling-log.txt.2 etc. where is each user's unique application Id, made up of a five digit number, e.g. 12345rolling-log.txt Any ideas on the best way to implement this, assuming that it's possible? Cheers Brett

  Read the article

• input type text and onKeyDown not working under IE

  - by dygi

  Hi there. I am writing a WWW application, it has to run under IE. I have the problem with the code that runs under FF, but i can't get it running under IE. // JS code function test() { if (window.event.keyCpde == 13) window.location.href.ssign("myPage.php"); } I've tried some similar ways around window.location and location.href, also document.location. I've read that IE has problems with that, so i ask for a solution. The goal is, that page reloads after typing in some text into <input type='text' name='item_code' onKeyDown='test()'> and click enter. So the result is similar to pressing submit type button below the text input. Within IE it reloads the same page and nothing happens. In FF it correctly works.

  Read the article

• Does there exist a jQuery plugin or JavaScript library that allows Venn Diagram presentation?

  - by knowncitizen

  I'm writing a jQuery application to allow analysis of data with the help of visual cues. My data is retrieved via XMLHttpRequest in the form of JSON. The visual cues include histograms, spark lines, and various other graph types. The idea is that the user is able to narrow their data via these various visual views. My question is thus - aside from the Google Charts API, does there exist a JavaScript way of presenting a Venn Diagram? Requirement: no Flash. Canvas is acceptable.

  Read the article

• How does TransactionScope guarantee data integrity across multiple databases?

  - by Bas Smit

  Hey guys, Can someone tell me the principle of how TransactionScope guarantees data integrity across multiple databases? I imagine it first sends the commands to the databases and then waits for the databases to respond before sending them a message to apply the command sent earlier. However when execution is stopped abruptly when sending those apply messages we could still end up with a database that has applied the command and one that has not. Can anyone shed some light on this? Edit: I guess what Im asking is can I rely on TransactionScope to guarantee data integrity when writing to multiple databases in case of a power outage or a sudden shutdown. Thanks, Bas Example: using(var scope=new TransactionScope()) { using (var context = new FirstEntities()) { context.AddToSomethingSet(new Something()); context.SaveChanges(); } using (var context = new SecondEntities()) { context.AddToSomethingElseSet(new SomethingElse()); context.SaveChanges(); } scope.Complete(); }

  Read the article

< Previous Page | 499 500 501 502 503 504 505 506 507 508 509 510  | Next Page >