Search Results

Search found 74706 results on 2989 pages for 'i know'.

Page 1857/2989 | < Previous Page | 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864  | Next Page >

  • Rails: creating a custom data type / creating a shorthand

    - by Shyam
    Hi, I am wondering how I could create a custom data type to use within the rake migration file. Example: if you would be creating a model, inside the migration file you can add columns. It could look like this: def self.up create_table :products do |t| t.column :name, :string t.timestamps end end I would like to know how to create something like this: t.column :name, :my_custom_data_type The reason for this to create for example a "currency" type, which is nothing more than a decimal with a precision of 8 and a scale of 2. Since I use only MySQL, the solution for this database is sufficient enough. Thank you for your feedback and comments!

    Read the article

  • StructureMap: "No default instance of plugin defined" - even though it is

    - by Dave Hanna
    I've been using StructureMap for about 6 months now; you would think it would start getting easier. It doesn't seem to. Here's the first line of my registry: For<IDbConnection>() .Singleton() .Use<SqlConnection>() .Ctor<string>(WebConfigurationManager.ConnectionStrings["UnifiedConnectionString"].ConnectionString); It compiles and runs. But when I try to use that Interface, like this: return MsSqlConfiguration.MsSql2008.ConnectionString(((DbConnection)ObjectFactory.GetInstance<IDbConnection>()).ConnectionString); I get StructureMap Exception Code: 202 No Default Instance defined for PluginFamily System.Data.IDbConnection, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 Now I may be missing something (okay, I obviously am), but I don't know how much more plain I can be about defining the default instance for IDbConnection. What am I doing wrong?

    Read the article

  • Projecting a 3D point to 2D screen coordinate OpenTK

    - by sinsro
    Using Monotouch and OpenTK I am trying to get the screen coordinate of one 3D point. I have my world view projection matrix set up, and OpenGL makes sense of it and projects my 3D model perfectly, but how to use the same matrix to project just one point from 2D to 3D? I thought I could simply use: Vector3.Transform(ref input3Dpos, ref matWorldViewProjection, out projected2Dpos); Then have the projected screen coordinate in projected2DPos. But the resulting Vector4 does not seem to represent the proper projected screen coordinate. And I do not know how to calculate it from there on.

    Read the article

  • ERD Design help meeded

    - by Mobi
    Hello guyz, I am new to ERD and stuff.Earlier i was drawing an erd that issued me some problems. the name of two entities in focus is "Bus" and "Passenger".What shall be the relationship between them. I think it should be many to many since one passenger can travel in many buses and a bus can give ride to many passengers.But one of my friend insisted that its a one-to-many relationship(A bus can have many passengers but a passenger can travel in only one bus).Plz let me know what's right. Also , whats the relationship between a class,students. Any help is appreciated.

    Read the article

  • 'NSInvalidArgumentException' UIButton IBAction Error

    - by Graeme
    Hi, I have a button in a view which refuses to work. I've got in working in a blank, default view application from X-Code, but in none of my applications will it work, instead it gives me the following error. Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[UIViewController showVicInfo:]: unrecognized selector sent to instance 0x3c084f0' The debugger isn't any help either. I've made sure that I hook up the button to the file's owner (not the other way around) as well. Below is the code for the action. And I know it's not the alert view, because the breakpoint doesn't even reach there. about.h @interface about : UIViewController { } -(IBAction)showInfo:(id)sender; about.m -(IBAction)showVicInfo:(id)sender { UIAlertView *myAlert = [[UIAlertView alloc] initWithTitle:@"No Internet Connection" message:@"You require an internet connection via WiFi or cellular network for iFirelert to work." delegate:self cancelButtonTitle:@"OK, thanks" otherButtonTitles:nil]; [myAlert show]; [myAlert release]; }

    Read the article

  • Hosting solution for images for website written in PHP

    - by tomaszs
    I've written a website in PHP and it will have ability for users to upload images. My website will have more than 100.000 users. Aprox. 1k users will upload image about 50 KB. And every image will be displayed on this website 5k times so it's transfer of: 1k x 50 KB x 5k = 250 GB per month. So my question is: Do you know any good solution (hosting or CDN network or else) that: will be payed for transfer not space used and no entrance fee will have API to upload images easily with PHP is extremely easy to use will be good for low budget will not require any special, complicated registration and formal things will allow commercial use will allow using this images in website layout ?

    Read the article

  • What is a good git server frontend for self hosted git repositories

    - by Ritesh M Nayak
    I am planning on deploying git for a project I am currently working on and was wondering if there are any free softwares that provide an easy to use web view of the git repository. I am primarily interested in using the front end to track changes, see diff information etc. There is a list of such front ends available here. Does anyone have any experience with any of these ? Which one would you suggest An open source clone of github would do just fine actually :D but I know thats too much to ask .

    Read the article

  • Is generic Money<T_amount> a good idea?

    - by jdk
    I have a Money Type that allows math operations and is sensitive to exchange rates so it will reduce one currency to another if rate is available to calculate in a given currency, rounds by various methods. It has other features that are sensitive to money, but I need to ask if the basic data type used should be made generic in nature. I've realized that the basic data type to hold an amount may differ for financial situations, for example: retail money might be expressed as all cents using int or long where fractions of cents do not matter, decimal is commonly used for its fixed behaviour, sometimes double seems to be used for big finance and large values sometimes a special BigInteger or 3rd-party type is used. I want to know if it would be considered good form to turn Money into Money<T_amount> so it can be used in any one of the above chosen scenarios?

    Read the article

  • Python "draw() must be called with Label instance as first argument (got _WindowMetaclass instance i

    - by Amorack
    This is a class I made using Python with pyglet to display a window. class Window(pyglet.window.Window): def __init__(self): super(Window, self).__init__() pyglet.text.Label("Prototype") windowText = text.Label.draw(Window, "Hello World", font_name = "Times New Roman", font_size = 36, color = (193, 205, 193, 255)) def on_draw(self): self.clear() self.label.draw() Every time I try to run it I get the error "TypeError: unbound method draw() must be called with Label instance as first argument (got _WindowMetaclass instance instead)". I'm pretty sure I know what I have to do (find how to get Label's instance) just not how to do it. Could someone help me understand how to make this work?

    Read the article

  • What Features Do You Want To See in .NET 5/C# 5?

    - by Randolpho
    .NET 4 and Visual Studio 2010 are finally here, along with a host of new features. But we wouldn't be who we are if we didn't long for a feature that didn't make the cut, or that was never even considered. So sound off and let the folks at Microsoft know: What features do you want to see in .NET 5? What features do you want to see in C# 5? F#? VB.NET? Before you vote to close: some may find this question too subjective to let stand, but there are other threads that have stood the test of time. Let this one stand as well.

    Read the article

  • Column locking in innodb?

    - by ming yeow
    I know this sounds weird, but apparently one of my columns is locked. select * from table where type_id = 1 and updated_at < '2010-03-14' limit 1; select * from table where type_id = 3 and updated_at < '2010-03-14' limit 10; the first one would not finish running even in a few hours, while the second one completes smoothly. the only difference is the type_id between the 2 queries. a bit of background, the first statement screwed up before which i had to kill manually. Thanks in advance for your help - i have an urgent data job to finish, and this problem is driving me crazy

    Read the article

  • Automating scraping of table data to XML

    - by thewinchester
    Problem I have a YQL query result that I'm trying to get converted and sort into a clean XML file. Background Being the pains that they are, information from the World Cup isn't freely available in an easy to reuse format. So, after a bit of finessing with YQL I have managed to liberate the required table rows which contain the data I'm after. The YQL query can be viewed at: http://query.yahooapis.com/v1/public/yql/ravingbeefsteak/worldcup2010groupliberator?diagnostics=true I'd like to now convert this information into XML, and being an absolute n00b I don't know where to start or what to look for. I'm also needing to do a find and replace on the data to get the URL's working as they should without manual changes, and hopefully an initial sorting of the data. If anyone can point me in the right direction of what I need to be doing to make my needs a reality it would be greatly appreciated.

    Read the article

  • How to keep my functions (objects/methods) 'lean and mean'

    - by Michel
    Hi, in all (Agile) articles i read about this: keep your code and functions small and easy to test. How should i do this with the 'controller' or 'coordinator' class? In my situation, i have to import data. In the end i have one object who coordinates this, and i was wondering if there is a way of keeping the coordinator lean(er) and mean(er). My coordinator now does the followling (pseudocode) //Write to the log that the import has started Log.StartImport() //Get the data in Excel sheet format result = new Downloader().GetExcelFile() //Log this step Log.LogStep(result ) //convert the data to intern objects result = new Converter().Convertdata(result); //Log this step Log.LogStep(result ) //write the data result = Repository.SaveData(result); //Log this step Log.LogStep(result ) Imho, this is one of those 'know all' classes or at least one being 'not lean and mean'? Or, am i taking this lean and mean thing to far and is it impossible to program an import without some kind of 'fat' importer/coordinator? Michel

    Read the article

  • Why would someone use ob_start in this manner and what is the point?

    - by meder
    Something is failing in the class I copied over. It's not my class, but the relevant bit that fails is: class foo { function process() { ob_start( array( &$this, 'parseTemplate' ) ); } function parseTemplate(){} } Does anyone know what the ob_start expression is supposed to do? Call the parse_template method in the context of a copy of &$this? PHP Version is 5.3.2-1. I suspect that the class was coded for 5.0-5.2 and it breaks in 5.3? or could it be something else?

    Read the article

  • undefined reference linker error

    - by klaus-johan
    Hi, I've stuck myself in a c++ project under linux ,for which I get an undefined reference when I try to create an object of a class that I just wrote.I believe this is an linker error caused by the fact that somewhere , somehow I should tell the linker to take into account the new class. I looked at the project properties and at the run command it executes a script (cmake.sh) . Because the project wasn't created by me , and because I'm a novice in working under linux, I just don't know how to direct the linker to do what I expect him to do !

    Read the article

  • iPhone modalView unwanted offset

    - by Chonch
    Hey, I have a UITabBarController with three view controllers (from three different types). On one of the view controllers, I want to display a modalViewController. Once a UIButton on the screen is pressed, I perform this action: AboutViewController *modalViewController = [[AboutViewController alloc] initWithNibName:@"AboutScreen" bundle:nil]; [self presentModalViewController:modalViewController animated:YES]; like I always do in order to display a modal view... The problem is, that while the modal view is being displayed (while it is moving from the bottom of the screen), a 20 pixels grey strip is showing on the bottom of the screen (the same size as the status bar on the top). Once the modal view reaches its final location, the strip disappears. Needless to say this doesn't look good (to say the least). Does anybody know why this may happen? Thanks,

    Read the article

  • multiplayer / visitors interactions with Ruby on Rails?

    - by Jordi
    I want to have interactions between visitors on my site. Imagine a chat room. It basically involves getting the data from everyone and sending it to everyone, this can be done by ajax and what not but I wonder if there is something already there in the wild that would do the heavy lifting for me. I have to say that I got very lost once I start programming Ajax, dont even know how to make tests for it... I have found the Q42multiplayer library that looks like what I want but they use C# as backend. There is something similar or any other multiplayer thingy I can get some idea or rip some code from (the whole thing will be opensource) for Ruby on Rails?

    Read the article

  • "Invalid Postback or callback argument" on modifying the DropDownList on the client side

    - by gnomixa
    I know why it's happening and i turned the validation on the page level, but is there a way to turn it off on the control level? "Invalid Postback or callback argument . Event validation is enabled using in configuration or <%@ Page EnableEventValidation="true" %in a page. For security purposes, this feature verifies that arguments to Postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the Postback or callback data for validation."

    Read the article

  • WYSIHAT Installation - not saving photos - Ruby on Rails

    - by bgadoci
    I just successfully installed WysiHat in my rails blog. Seems that the 'add a picture' feature is not working. It successfully allows me to find and select a picture from my desktop but upon clicking save, it does nothing. I also have Paperclip successfully installed. I am wondering if this may have something to do with it. Perhaps Paperclip is getting in the way, or, perhaps I need to connect Paperclip and WysiHat somehow. Any ideas? (let me know if I need to post any code).

    Read the article

  • Disable debug output in libxml2 and xmlsec

    - by ereOn
    Hi, In my software, I use libxml2 and xmlsec to manipulate (obviously) XML data structures. I mainly use XSD schema validation and so far, it works well. When the data structure input by the client doesn't match the XSD schema, libxml2 (or xmlsec) output some debug strings to the console. Here is an example: Entity: line 1: parser error : Start tag expected, '<' not found DUMMY<?xml ^ While those strings are useful for debugging purposes, I don't want them to appear and polute the console output in the released software. So far, I couldn't find an official way of doing this. Do you know how to suppress the debug output or (even better) to redirect it to a custom function ? Many thanks.

    Read the article

  • Sanitizing incoming XML via WCF

    - by Clark
    I am consuming a Java webservice from .net using WCF. I am getting an error on deserialization of a response from the Java service The byte 0x00 is not valid at this location. Line 1, position 725. I know from some research that this is an incorrectly encoded null, but I am unlikely to get the provider to change it, so I would like to sanitize the null out before WCF deserializes the return message. Any Ideas? I am using c#, but answers in any CLR language will do.

    Read the article

  • Sort ArrayList of custom Objects by property

    - by Samuel
    Hello World!! :D I had a question which is pretty easy if you know the answer I guess. I read about sorting ArrayLists using a Comparator but somehow in all of the examples people used compareTo which according to some research is a method working on Strings... I wanted to sort an ArrayList of custom objects by one of their properties: a Date object (getStartDay()). Normally I compare them by item1.getStartDate().before(item2.getStartDate()) so I was wondering whether I could write something like: public class customComparator { public boolean compare(Object object1, Object object2) { return object1.getStartDate().before(object2.getStartDate()); } } public class randomName { ... Collections.sort(Database.arrayList, new customComparator); ... } I just started with Java so please forgive my ignorance :) Thanks in advance!! -Samuel

    Read the article

  • Display page numbers in a excel sheet generated using C#.NET

    - by constant learner
    Hello Stackers Does anyone have an idea on how to include or input the page numbers in the excel sheet generated using C# code. I use the libraries available in Microsoft.Office.Interop.Excel to generate the file. However by default in the output i cannot see the page numbers. I know to enable this via excel options (View -- Header and Footer ...) but i want to automate this via C#. Is this possible, if yes kindly share the snippet for the same. Thanks Constant Learner

    Read the article

  • What's the best way to Notify network users of outages or maintenance

    - by Dubs
    There are times when one of our applications is down for maintenance and we'd like to let our users know about it before they start flooding our help desk with calls. What's the best way to notify our users of an event on the network? Some users are on our intranet, while others log in from the Web. Is there an application they can install to which we can send notifications messages? I'm interested to hear what others have come up with to address this requirement. Thanks!

    Read the article

  • Video Synthesis - Making waves, patterns, gradients...

    - by Nathan
    I'm writing a program to generate some wild visuals. So far I can paint each pixel with a random blue value: for (y = 0; y < YMAX; y++) { for (x = 0; x < XMAX; x++) { b = rand() % 255; setPixelColor(x,y,r,g,b); } } I'd like to do more than just make blue noise, but I'm not sure where to start (Google isn't helping me much today), so it would be great if you could share anything you know on the subject or some links to related resources.

    Read the article

< Previous Page | 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864  | Next Page >