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  • Underlying Concept Behind Keyboard Mappings

    - by ajay
    I am frustrated with key mapping issues. On my Linux box, if I type Home/End in Vim, then the cursor actually moves to the beginning/end of the line. On my Mac when I am on TextEdit, if I do Fn + Left or Fn + Right, it takes me to beginning/end of the line. But if I am on Vim on my Mac terminal, then the same key combinations don't work. Why? I see online all the different cryptic settings that I have to paste in .vimrc to make this work, but I can't find any explanation for those cryptic map, imap settings. What is the underlying issue here, and how can I fix it? Thanks!

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  • Locking database edit by key name

    - by Will Glass
    I need to prevent simultaneous edits to a database field. Users are executing a push operation on a structured data field, so I want to sequence the operations, not simply ignore one edit and take the second. Essentially I want to do synchronized(key name) { push value onto the database field } and set up the synchronized item so that only one operation on "key name" will occur at a time. (note: I'm simplifying, it's not always a simple push). A crude way to do this would be a global synchronization, but that bottlenecks the entire app. All I need to do is sequence two simultaneous writes with the same key, which is rare but annoying occurrence. This is a web-based java app, written with Spring (and using JPA/MySQL). The operation is triggered by a user web service call. (the root cause is when a user sends two simultaneous http requests with the same key). I've glanced through the Doug Lea/Josh Bloch/et al Concurrency in Action, but don't see an obvious solution. Still, this seems simple enough I feel there must be an elegant way to do this.

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  • MKMapView Pins Refreshing Color on Click

    - by Dave C
    Hello, I have several custom MKPinAnnotationView on my map with different images(colored pins). Everything works fine until I either click on a pin or change the map to a different view(satellite/road)... when I do either of these, my pins will revert back to the classic red color. Any help would be greatly appreciated.

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  • Change the background color of the options menu

    - by feragusper
    I'm trying to change the default color for the options menu which is white. I want a black background for every item on the options menu. I've tried some shoots like android:itemBackground="#000000" on the item element within the menu element but it doesn't work. I don't know if this is doable or not. Any idea would be welcome! :)

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  • Generating Color Gradient

    - by Malfist
    I want to display to my user how many (percent wise) of their forms are compliant with the new standard. The way I want to let them know visually is the percent amount will be colored. It will be 0xFF0000 (pure red) for 0% and 0x00FF00 (pure green) at 100%. What is the best way to calculate the color for each step along the way?

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  • change text color using jquery

    - by pradeep
    <input type='radio' name='specific_consultant' id='specific_consultant_no' value='no'>No</input> hii. i have a radio button like this . on click of this radio button , i need to change text color of text like No .. how do i do it..

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  • Entity Relationships - Can a weak entity take part in a 'one to many' relationship as the 'one'

    - by jonos
    Hi, With the following entity relationship structure I'm struggling to figure out if the relationship between the LOAN and ITEM is valid? The weak entity of Loan uses a partial key of 'loan_dateLeant' and the primary keys from CUSTOMER and ITEM to form its primary key. However LOAN has a 'one to many' relationship with ITEM as a loan can consist of more than one item. But surely this means that if more than one item is loaned, then the loan record will have two item_id values for part of its primary key?

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  • Linear color interpolation?

    - by user146780
    If I have a straight line that mesures from 0 to 1, then I have colorA(255,0,0) at 0 on the line, then at 0.3 I have colorB(20,160,0) then at 1 on the line I have colorC(0,0,0). How could I find the color at 0.7? Thanks

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  • Mapping Ctrl+Arrow for Home/End/PageUp/Down

    - by user67275
    I'm using Windows 7 on Dell New Inspiron 14z Ultrabook. It doesn't have Home/End/PgUp/PgDn keys. Instead I have to use Fn + arrow keys. Can I re-map those to Ctrl + arrows or Alt + arrows or Shift + arrows? That way I could go one page up and down with only my right hands rather than with the left hand on the Fn key and right hand on arrow key. Also, volume up and down is assigned to FnF11 and FnF12. Can I re-map them to F11 and F12? Existing functions assigned to F11 and F12 will be replaced by FnF11 and FnF12. Is it possible?

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  • negative color with glBlendFunc() ?

    - by Newbie
    i want my lines to be drawn with negative color (taken from the screen under the line), i just didnt understand how the blending works, looked at docs etc, tested 50 combinations and so on. started to think its not possible at all... could someone just give the two values, im tired of thinking how it works. thanks,

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  • Disable "Do you want to change the color scheme to improve performance?" warning

    - by William Lawn Stewart
    Sometimes this dialog box will pop up (see screenshot below). Every time it appears I select "Keep the current color scheme, and don't show this message again". Windows then reminds me again -- either the next day or after reboot, or sometimes another 5 minutes later. Do you want to change the color scheme to improve performance? Windows has detected your computer's performance is slow. This could be because there are not enough resources to run the Windows Aero color scheme. To improve performance, try changing the color scheme to Windows 7 Basic. Any change you make will be in effect until the next time you log on to Windows Change the color scheme to Windows 7 Basic Keep the current color scheme, but ask me again if my computer continues to perform slowly Keep the current color scheme, and don't show this message again Is there some reason why Windows is ignoring/forgetting my attempts to suppress the dialog? I'd love to never ever see it again, it's annoying, and it alt-tabs me out of fullscreen applications. If it matters, I'm running Windows 7 x64 Professional. I believe the dialog appears because I'm forcing Vsync and Triple Buffering for DirectX applications.

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  • How to Avoid Duplicate Key Exception

    - by LifeH2O
    I am using TableAdapter to insert records in table within a loop. foreach(....) { .... .... teamsTableAdapter.Insert(_teamid, _teamname); .... } Where TeamID is the primary key in the table After first run of this loop, Insert throws Duplicate Primary Key found Exception. To handle this, i have done this foreach(....) { .... .... try { _teamsTableAdapter.Insert(_teamid, _teamname); } catch (System.Data.SqlClient.SqlException e) { if (e.Number != 2627) MessageBox.Show(e.Message); } .... .... } But using try catch statement is costly, how to avoid this exception. I am working in VS2010 and INSERT ... ON DUPLICATE KEY UPDATE does not work.

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  • Django Forms, Foreign Key and Initial retuen all associated values

    - by gramware
    I a working with Django forms. The issue I have is that Foreign Key fields and those using initial take all associated entries (all records associated with that record other then the one entry i wanted e.g instead of getting a primary key, i get the primary key, post subject, post body and all other values attributed with that record). The form and the other associated queries still work well, but this behaviour is clogging my database. How do i get the specific field i want instead of all records. An example of my models is here: A form field for childParentId returns postID, postSubject and postBody instead of postID alone. Also form = ForumCommentForm(initial = {'postSubject':forum.objects.get(postID = postID), }) returns all records related to postID. class forum(models.Model): postID = models.AutoField(primary_key=True) postSubject = models.CharField(max_length=25) postBody = models.TextField() postPoster = models.ForeignKey(UserProfile) postDate = models.DateTimeField(auto_now_add=True) child = models.BooleanField() childParentId = models.ForeignKey('self',blank=True, null=True) deleted = models.BooleanField() def __unicode__(self): return u'%s %s %s %s %s' % (self.postSubject, self.postBody, self.postPoster, self.postDate, self.postID

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