Search Results

Search found 62161 results on 2487 pages for 'set difference'.

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 586/2487 | < Previous Page | 582 583 584 585 586 587 588 589 590 591 592 593  | Next Page >

  • Stop Windows 7 from accessing or writing to hard drive unless "told" to by me? (More info inside...)

    - by Jeff
    A confusing question, perhaps, but bear with me. I have two internal HDDs set up in a RAID0 array which I use as mass storage. I access the drive very infrequently (once a day at most) and so I have set up Windows 7's power options to turn off idle disks after only 1 minute. This is fine, and the disks are turned off most of the time. However, I notice that Windows sometimes spins up the drives when I really, really don't want or need it to. This causes a 30 second delay as both drives spin up and lock up my system. Some examples of when this happens: 1) When I'm installing something using Windows Installer or Installshield; it seems to me as if they're using the drive with most available free space as the installer cache location... so my big RAID drive has to spin up! Most annoying. 2) Apparently, when I open a Java-based program which resides on my system drive and has nothing to do with my RAID drive! 3) At boot-up and shut-down time. At shutdown the drive spin up only for the computer to immediately shut down! Incredibly frustrating! I've already tried changing the letter of the drive, and at some points have removed the drive letter entirely, which solves the first two issues above. So my question (FINALLY!) is this: is there any way I can mark this drive as being for "storage only", so Windows basically does not see it at all until I actually invoke it somehow? Or is there any way I could set it up so that only specific programs have write access to it? For example, download managers, TeraCopy, etc. etc.? Basically I want it to be a "ghost drive" until I'm ready to use it and to stop Windows from spinning it up all the damn time! Thank you. :)

    Read the article

  • Should we use temporary variables for the returned values of functions?

    - by totymedli
    I thought about this: Is there a performance difference in these two practices: Store the return value of a function in a temporary variable than give that variable as a parameter to another function. Put the function into the other function. Specification Assuming all classes and functions are written correctly. Case 1. ClassA a = function1(); ClassB b = function2(a); function3(b); Case 2. function3(function2(function1())); I know there aren't a big difference with only one run, but supposed that we could run this a lot of times in a loop, I created some tests. Test #include <iostream> #include <ctime> #include <math.h> using namespace std; int main() { clock_t start = clock(); clock_t ends = clock(); // Case 1. start = clock(); for (int i=0; i<10000000; i++) { double a = cos(1); double b = pow(a, 2); sqrt(b); } ends = clock(); cout << (double) (ends - start) / CLOCKS_PER_SEC << endl; // Case 2. start = clock(); for (int i=0; i<10000000; i++) sqrt(pow(cos(1),2)); ends = clock(); cout << (double) (ends - start) / CLOCKS_PER_SEC << endl; return 0; } Results Case 1 = 6.375 Case 2 = 0.031 Why is the first one is much slower, and if the second one is faster why dont we always write code that way? Anyway does the second pratice has a name? I also wondered what happens if I create the variables outside the for loop in the first case, but the result was the same. Why?

    Read the article

  • Confused about Base class libary and Framework Class Library

    - by n0vic3c0d3r
    Is ADO.NET and ASP.NET a part of Base Class Library? The information given in wikipedia looks ambiguous to me. In the figure, it is shown as a separate block. What is the difference between Base Class Library(BCL) and Framework Class Library(FCL)? Is FCL as a part of .NET Framework? If so why is FCL not shown in the figure as part of .NET framework? Got confused!!

    Read the article

  • Focus next textview automatically

    - by Naseer
    I have a TextView with android:maxLength set to 3 and another with android:maxLength set to 7. I want focus to automatically move to the second TextView once the 3 chars of the first TextView are filled up. Is this possible without inheriting TextView and writing a custom implementation ?

    Read the article

  • FileInfo.MoveTo() vs File.Move()

    - by Eric
    Is there any difference between these two methods of moving a file? System.IO.FileInfo f = new System.IO.FileInfo(@"c:\foo.txt"); f.MoveTo(@"c:\bar.txt"); //vs System.IO.File.Move(@"c:\foo.txt", @"c:\bar.txt");

    Read the article

  • What about buffering FileInputStream?

    - by Pregzt
    I have a piece of code that reads hell of a lot (hundreds of thousand) of relatively small files (couple of KB) from the local file system in a loop. For each file there is a java.io.FileInputStream created to read the content. The process its very slow and take ages. Do you think that wrapping the FIS into java.io.BufferedInputStream would make a significant difference?

    Read the article

  • C: performance of assignments, binary operations, et cetera...

    - by Shinka
    I've heard many things about performance in C; casting is slow compared to normal assignments, functional call is slow, binary operation are much faster than normal operations, et cetera... I'm sure some of those things are specific to the architecture, and compiler optimization might make a huge difference, but I would like to see a chart to get a general idea what I should do and what I should avoid to write high-performance programs. Is there such a chart (or a website, a book, anything) ?

    Read the article

  • Iphone SDK - tap to undo a zoom inside of a scroll view

    - by Dave
    Hi, I was just wondering how I can get a single tap to undo the zoom inside of a scroll view? I cant seem to figure it out. I was also wondering how do you know what size to set your scroll view contentSize, as I find this issue a little confusing at the moment I have it set at 460x320. Thanks

    Read the article

  • Detect changes to user input controls in Silverlight?

    - by code
    I have a childwindow with a number of Textboxes, Comboboxes, and DatePickers. I want to know if a user has changed any value in these (to know if I need to save to db) One way I could think of doing this are in the 'on chg' event handlers and set bool. But if a user changes the value, in say a combobox, then changes back to the original this would still be seen as a change. Are there other alternatives? (note the project is not set up as MVVM) Thanks

    Read the article

  • Is there some API on BlackBerry for "smooth" image resizing?

    - by Arhimed
    To get image thumbnails on BlackBerry I use EncodedImage.scaleImage32(). It works Ok, but when I open native image viewer (from the Camera app) I see the difference in quality - native viewer thumbnails look nice (smooth, anti-aliased), while mine are a bit ugly. Looks like native viewer resizes images using some filter (bicubic or smth like that). How can I do the same? Is there some API for "smooth" resizing?

    Read the article

  • stack panel width and height to zero in .cs

    - by prince23
    hi , have an stack panel defined in my design page <StackPanel Width="973" x:Name="spmarks" > </StackPanel> now in .cs page i need to set the width and height of the stack panel to zero spmarks.ActualWidth ="0"; spmarks.ActualWidth ="0"; here i am getting error. how can i set width and height to zero now any solution on this would be great thank you

    Read the article

  • iPhone memory management (with specific examples/questions)

    - by donkim
    Hey all. I know this question's been asked but I still don't have a clear picture of memory management in Objective-C. I feel like I have a pretty good grasp of it, but I'd still like some correct answers for the following code. I have a series of examples that I'd love for someone(s) to clarify. Setting a value for an instance variable. Say I have an NSMutableArray variable. In my class, when I initialize it, do I need to call a retain on it? Do I do fooArray = [[[NSMutableArray alloc] init] retain]; or fooArray = [[NSMutableArray alloc] init]; Does doing [[NSMutableArray alloc] init] already set the retain count to 1, so I wouldn't need to call retain on it? On the other hand, if I called a method that I know returns an autoreleased object, I would for sure have to call retain on it, right? Like so: fooString = [[NSString stringWithFormat:@"%d items", someInt] retain]; Properties. I ask about the retain because I'm a bit confused about how @property's automatic setter works. If I had set fooArray to be a @property with retain set, Objective-C will automatically create the following setter, right? - (void)setFooArray:(NSMutableArray *)anArray { [fooArray release]; fooArray = [anArray retain]; } So, if I had code like this: self.fooArray = [[NSMutableArray alloc] init]; (which I believe is valid code), Objective-C creates a setter method that calls retain on the value assigned to fooArray. In this case, will the retain count actually be 2? Correct way of setting a value of a property. I know there are questions on this and (possibly) debates, but which is the right way to set a @property? This? self.fooArray = [[NSMutableArray alloc] init]; Or this? NSMutableArray *anArray = [[NSMutableArray alloc] init]; self.fooArray = anArray; [anArray release]; I'd love to get some clarification on these examples. Thanks!

    Read the article

  • Using MySQL variables in a query

    - by Jon Tackabury
    I am trying to use this MySQL query: SET @a:=0; UPDATE tbl SET sortId=@a:=@a+1 ORDER BY sortId; Unfortunately I get this error: "Parameter '@a' must be defined" Is it possible to batch commands into 1 query like this, or do I need to create a stored procedure for this?

    Read the article

  • How do you edit tab labels per tab in GVim?

    - by Neil
    How do you edit a tab label, per tab, in GVim? You can do this: set guitablabel=foo But that will set every tab's label to "foo". The documentation seems to suggest using a t:var, like this: let t:guitablabel="foo" But it doesn't do anything. Is there any way to give each different tab a different name?

    Read the article

  • Adapter Methods in Android?

    - by Praveen Chandrasekaran
    i have go through the three methods in Adapters classes. getView() newView() bindView() what are the difference between those methods? please share some tutorial, sample code or logics to understand this. Thanks. i have to create a listview with the progressive icons. which adapter you suggest me to do that?

    Read the article

  • Objective-C memory management issue

    - by Toby Wilson
    I've created a graphing application that calls a web service. The user can zoom & move around the graph, and the program occasionally makes a decision to call the web service for more data accordingly. This is achieved by the following process: The graph has a render loop which constantly renders the graph, and some decision logic which adds web service call information to a stack. A seperate thread takes the most recent web service call information from the stack, and uses it to make the web service call. The other objects on the stack get binned. The idea of this is to reduce the number of web service calls to only those appropriate, and only one at a time. Right, with the long story out of the way (for which I apologise), here is my memory management problem: The graph has persistant (and suitably locked) NSDate* objects for the currently displayed start & end times of the graph. These are passed into the initialisers for my web service request objects. The web service call objects then retain the dates. After the web service calls have been made (or binned if they were out of date), they release the NSDate*. The graph itself releases and reallocates new NSDates* on the 'touches ended' event. If there is only one web service call object on the stack when removeAllObjects is called, EXC_BAD_ACCESS occurs in the web service call object's deallocation method when it attempts to release the date objects (even though they appear to exist and are in scope in the debugger). If, however, I comment out the release messages from the destructor, no memory leak occurs for one object on the stack being released, but memory leaks occur if there are more than one object on the stack. I have absolutely no idea what is going wrong. It doesn't make a difference what storage symantics I use for the web service call objects dates as they are assigned in the initialiser and then only read (so for correctness' sake are set to readonly). It also doesn't seem to make a difference if I retain or copy the dates in the initialiser (though anything else obviously falls out of scope or is unwantedly released elsewhere and causes a crash). I'm sorry this explanation is long winded, I hope it's sufficiently clear but I'm not gambling on that either I'm afraid. Major big thanks to anyone that can help, even suggest anything I may have missed?

    Read the article

  • Is there a way to bypass the jQuery error handler?

    - by oravecz
    If my Ajax call returns a successful result, but while processing the result I cause an exception, the error handler fires. This seems counter intuitive to me as I think the error handler should only fire when an error occurs as a result of making the Ajax call or via a server-side error. I am trying to use the Ajax function in a unit test so I would like to tell the difference between the two different failure scenarios.

    Read the article

  • Blackberry (Java) - Setting scrolling be not focused on objects on the screen

    - by paullb
    I have a mainscreen which currently scrolls (and I have the arrows on the right) but the scrolling seems to be focused on the ButtonField objects that I have on the page. Is there any way to set the scrolling to be non-focused scrolling (moving a few pixels each time). Is there a way to set this? Other ideas I have had (which sound hacky so I want to avoid): - Placing NullFields around to scroll - Manually listening to the trackwheelRoll event and moving appropriately

    Read the article

  • Why would it be necessary to subclass from object in Python?

    - by rmh
    I've been using Python for quite a while now, and I'm still unsure as to why you would subclass from object. What is the difference between this: class MyClass(): pass And this: class MyClass(object): pass As far as I understand, object is the base class for all classes and the subclassing is implied. Do you get anything from explicitly subclassing from it? What is the most "Pythonic" thing to do?

    Read the article

  • Multi table Triggers ms sql noob

    - by Chin
    I have a load of tables all with the same 2 datetime columns (lastModDate, dateAdded). I am wondering if I can set up global Insert Update trigger for these tables to set the datetime values. Or if not, what approaches are there? Any pointers much appreciated

    Read the article

  • Sesion timout vs Form Authentication timeout

    - by Costa
    Hi What is the difference between a abandon Session and a cookie timeout, what if the session is abandon and the cookie is still alive, is that can lead to a problem? <sessionState timeout="1" /> <authentication mode="Forms"> <forms loginUrl="login.aspx" timeout="1" /> </authentication> Thanks

    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 | 582 583 584 585 586 587 588 589 590 591 592 593  | Next Page >