Search Results

Search found 38522 results on 1541 pages for 'single source'.

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

Page 237/1541 | < Previous Page | 233 234 235 236 237 238 239 240 241 242 243 244  | Next Page >

  • How to build the ViewModel in MVVM not to violate the Single Responsibility Principle?

    - by Przemek
    Robert Martin says: "There should never be more than one reason for a class to change". Let's consider the ViewModel class which is bound to a View. It is possible (or even probable) that the ViewModel consists of properties that are not really related to each other. For small views the ViewModel may be quite coherent, but while the application gets more complex the ViewModel will expose data that will be subject to change for different and unrelated reasons. Should we worry about the SRP principle in the case of ViewModel class or not?

    Read the article

  • Displaying list of objects as single column in a bound gridview (Winforms)?

    - by Carrie Nelson
    I have a gridview that is bound to a datasource on a Windows Form (VB.NET). The grid displays a list of "certifications", and each "certification" can be associated with many languages. So in the grid, I'd like to display "languages" as a column, and display a comma delimited list of the language names for each "certification". In the "certification" class, one of the properties is a list of "language" objects, and each "language" has an ID (guid), name (string), and value (integer). So in the datasource, I have the list of "languages", but I can't figure out how to display them in a column on the grid. The gridview won't let me add the language list property as a column. So is the ONLY way to add a new property on the "certification" class, which returns a string that contains the comma delimited list, and show THAT on the grid? Or is there a way to display that list of "languages"?

    Read the article

  • Is it possible to plot a single density over a discrete variable?

    - by mattrepl
    The x-axis is time broken up into time intervals. There is an interval column in the data frame that specifies the time for each row. Plotting a histogram or line using geom_histogram and geom_freqpoly works great, but I'd like to use geom_density to get a filled area. Perhaps there is a better way to achieve this. Right now, if I use geom_density, curves are created for each discrete factor level instead of smoothing over all of them.

    Read the article

  • Locking a file to verify a single execution of a service. How reliable?

    - by Camilo Díaz
    Hello, I am deploying a little service to an UNIX(AIX) system. I want to check if there is no active instance of that service running when starting it. How reliable is to implement that check like this? Try to acquire a lock on a file (w/ FileChannel) If succeeds, keep lock and continue execution If fails, exit and refuse to run the main body I am aware of software like the Tanuki wrapper, however, I'm longing for a simpler(maybe not portable) solution. Regarding PIDFILE(s): I want to avoid using them if possible, as I don't have administrative rights on the machine, neither knowledge in AIX's shell programming.

    Read the article

  • jQuery: show an element from select drop down, hide it when other option selected

    - by Ricardo Zea
    I've tried looking around and there are similar problems, but mine is way more simple, but yet, I can't find a solution within these forums. While learning jQuery, I'm trying to show a DIV when an item/option from a select drop down is selected, and hide that same DIV when any other option in the select drop down is selected. select HTML: <select name="source" id="source"> <option value="null" selected="selected">&mdash;Select&mdash;</option> <option value="s1">Source 1</option> <option value="s2">Source 2</option> <option value="sother">Other</option> </select> DIV I need to show when 'Other' is selected: <div id="specify-source">Other source here...</div> When any other option in the select menu is selected, the above DIV shouldn't be visible. I've tried this jQuery but of course it doesn't work properly: $(function() { $.viewMap = { 'sother' : $('#specify-source') }; $('#source').change(function() { // hide all $.each($.viewMap, function() { this.hide(); }); // show current $.viewMap[$(this).val()].show(); }); }); Any help you can give me, I'd greatly appreciate it. Thanks,

    Read the article

  • Single static HTML file: how can I serve it efficiently?

    - by Stevo M.
    Good afternoon. I have a domain and server that I've procured for non-HTML services. Should anyone stumble across port 80 of this server, I'd like to serve them a page explaining what the domain & server is for, instead of just 404'ing them. How can I serve one small, static, independent (i.e.: no images or CSS) HTML file, with a minimum of effort (meaning both a smooth setup for me, and minimum CPU expense). The server contains an untouched installation of ArchLinux, and I'm open to solutions in any language. (Note: I am a slight newbie when it comes to this, so forgive me if this question seems trivial or obvious.) Thank you.

    Read the article

  • Distributing a function over a single dimension of an array in MATLAB?

    - by Alex Feinman
    I often find myself wanting to collapse an n-dimensional matrix across one dimension, and can't figure out if there is a concise incantation I can use to do this. For example, when parsing an image, I often want to do something like this. (Note! Illustrative example only. I know about rgb2gray for this specific case.) img = imread('whatever.jpg'); s = size(img); for i=1:s(1) for j=1:s(2) bw_img = mean(img(i,j,:)); end end I would love to express this as something like: bw = on(color, 3, @mean); or bw(:,:,1) = mean(color); Is there a short way to do this?

    Read the article

  • Should old/legacy/unused code be deleted from source control repository?

    - by Checkers
    I've encountered this in multiple projects. As the code base evolves, some libraries, applications, and components get abandoned and/or deprecated. Most people prefer to keep them in. The usual argument is that the code does not really take any space, it can be left alone until needed again. So a repository slowly turns into a cesspool of legacy code, where it's hard to find anything. Some people delete old code, since it creates clutter, raises more questions for new people, and you can restore any old snapshot of the code base anyway. However you can't always find the old code if you don't know where to look, as none of the (common) VCS I know offer search over the entire repository including all historical revisions, and the only way to search the old files is to check out the revision where the deleted file exists. What would be a good approach to repository management?

    Read the article

  • How do you set the default source for the Output window in Visual Studio?

    - by Grank
    We added a SharePoint BDC model project to a solution in Visual Studio 2010. Ever since, whenever the solution is built, instead of showing the Build output in the Output window, it insists on having "SharePoint Tools" selected in the "Show Output from:" drop-down, just to say "Model validation started ... Model validation completed with no errors." Short of shutting off any SharePoint projects in the build configuration, can this behavior be overridden?

    Read the article

  • In GWT-EXT checkboxtree how to handle single selection of tree nodes?

    - by RAS
    hi, I'm working on checkBoxTree in GWT-EXT 2.0.3 with Java. My aim is to get a selectionModel which allows me to select(check) only one TreeNode at a time. If I select another TreeNode after selecting one then, the previous one should be unchecked. I've tried using DefaultSelectionModel with TreePanel, but either I've not used it properly or it's working only for selection of TreeNode not for checking a TreeNode. Can anyone help me in this? Thanks in advance.

    Read the article

  • How to generate a random but unique number and display that number within the source of my image tag

    - by Matthew
    Hello guys, I have done some searching but really haven't found what I'm looking for. What I would like to do is generate a random BUT unique 5 digit number and push whatever number into an img tag on my page. For example when people come to my page this number would generate and get pushed into this image tag: <img src="http://www.sample.com?randomNUM=12345" height="1" width="1" /> I have a mySQL DB and am looking to do this in PHP. Thank, Matt

    Read the article

  • git: setting a single tracking remote from a public repo.

    - by Gauthier
    I am confused with remote branches. My local repo: (local) ---A---B---C-master My remote repo (called int): (int) ---A---B---C---D---E-master What I want to do is to setup the local repo's master branch to follow that of int. Local repo: (local) ---A---B---C---D---E-master-remotes/int/master So that when int changes to: (int) ---A---B---C---D---E---F-master I can run git pull from the local repo's master and get (local) ---A---B---C---D---E---F-master-remotes/int/master Here's what I have tried: git fetch int gets me all the branches of int into remote branches. This can get messy since int might have hundreds of branches. git fetch int master gets me the commits, but no ref to it, only FETCH_HEAD. No remote branch either. git fetch int master:new_master works but I don't want a new name every time I update, and no remote branch is setup. git pull int master does what I want, but there is still no remote branch setup. I feel that it is ok to do so (that's the best I have now), but I read here and there that with the remote setup it is enough with git pull. git branch --track new_master int/master, as per http://www.gitready.com/beginner/2009/03/09/remote-tracking-branches.html . I get "not a valid object name: int/master". git remote -v does show me that int is defined and points at the correct location (1. worked). What I miss is the int/master branch, which is precisely what I want to get. git fetch in master:int/master. Well, int/master is created, but is no remote. So to summarize, I've tried some stuff with no luck. I would expect 2 to give me the remote branch to master in the repo int. The solution I use now is option 3. I read somewhere that you could change some config file by hand, but isn't that a bit cumbersome? The "cumbersome" way of editting the config file did work: [branch "master"] remote = int merge = master It can be done from command line: $ git config branch.master.remote int $ git config branch.master.merge master Any reason why option 2 above wouldn't do that automatically? Even in that case, git pull fetches all branches from the remote.

    Read the article

  • C# struct with object as data member

    - by source-energy
    As we know, in C# structs are passed by value, not by reference. So if I have a struct with the following data members: private struct MessageBox { // data members private DateTime dm_DateTimeStamp; // a struct type private TimeSpan dm_TimeSpanInterval; // also a struct private ulong dm_MessageID; // System.Int64 type, struct private String dm_strMessage; // an object (hence a reference is stored here) // more methods, properties, etc ... } So when a MessageBox is passed as a parameter, a COPY is made on the stack, right? What does that mean in terms of how the data members are copied? The first two are struct types, so copies should be made of DateTime and TimeSpan. The third type is a primitive, so it's also copied. But what about the dm_strMessage, which is a reference to an object? When it's copied, another reference to the same String is created, right? The object itself resides in the heap, and is NOT copied (there is only one instance of it on the heap.) So now we have to references to the same object of type String. If the two references are accessed from different threads, it's conceivable that the String object could be corrupted by being modified from two different directions simultaneously. The MSDN documentation says that System.String is thread safe. Does that mean that the String class has a built-in mechanism to prevent an object being corrupted in exactly the type of situation described here? I'm trying to figure out if my MessageBox struct has any potential flaws / pitfalls being a structure vs. a class. Thanks for any input. Source.Energy.

    Read the article

  • What is ExtJS philosophy? Single page application?

    - by stach
    I need to write my next project using ExtJs. It's a nice Javascript lib but I don't fully understand the idea behind it. Take the docs page for example: http://www.extjs.com/deploy/dev/docs/ Am I supposed to write my web applications with extjs like that? One page that should never be refreshed, and everything getting done by AJAX? How do you debug such applications if getting to the right place may take a lot of 'clicking' and working with it. You cannot fix the bug and hit refresh in the browser to see the results. Any suggestions?

    Read the article

  • How to concatenate multiple lines of log file into single variable in batch file?

    - by psych
    I have a log file containing a stack trace split over a number of lines. I need to read this file into a batch file and remove all of the lines breaks. As a first step, I tried this: if exist "%log_dir%\Log.log" ( for /F "tokens=*" %%a in ("%log_dir%\Log.log") do @echo %%a ) My expectation was that this would echo out each line of the log file. I was then planning to concatenate these lines together and set that value in a variable. However, this code doesn't do what I would expect. I have tried changing the value of the options for delims and tokens, but the only output I can get is the absolute path to the log file and nothing from the contents of this file. How can I set a variable to be equal to the lines of text in a file with the line breaks removed?

    Read the article

  • How Can I Programmatically Build a Multi-Page TIFF out of Many Single Page TIFFs, Using Python?

    - by MetaHyperBolic
    I've found, via Google, numerous people asking the same question, but no solutions. The Python Image Library (PIL) has tools for stepping through an already existing multi-page TIFF, but nothing about creating them. Libraries would hopefully be available on Windows, for Python 2.6. If there's some freeware out there which will do the trick, I wouldn't mind seeing it, but I was hoping I could accomplish this in Python.

    Read the article

  • What's the cross-browser way to capture all single clicks on a button?

    - by sany
    What's the best way to execute a function exactly once every time a button is clicked, regardless of click speed and browser? Simply binding a "click" handler works perfectly in all browsers except IE. In IE, when the user clicks too fast, only "dblclick" fires, so the "click" handler is never executed. Other browsers trigger both events so it's not a problem for them. The obvious solution/hack (to me at least) is to attach a dblclick handler in IE that triggers my click handler twice. Another idea is to track clicks myself with mousedown/mouseup, which seems pretty primitive and probably belongs in a framework rather than my application. So, what's the best/usual/right way of handling this? (pure javascript or jQuery preferred)

    Read the article

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

< Previous Page | 233 234 235 236 237 238 239 240 241 242 243 244  | Next Page >