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• Where is the root [closed]

  - by smwikipedia

  I read the manual page of the "mount" command, at it reads as below: All files accessible in a Unix system are arranged in one big tree, the file hierarchy, rooted at /. These files can be spread out over several devices. The mount command serves to attach the file system found on some device to the big file tree. My question is: Where is this "big tree" located?

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• How to create sample filter in VirtualDub

  - by mykhaylo

  I would like to create a simple filter for VirtualDub application. The filter had to invert colors on image. How to create a simple loop, which would invert the colors for each pixel?

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• how to create more realistic explosions

  - by user270811

  hi, right now, for an explosion, i am just showing 3 images in a for loop, is there any better way to create a more realistic explostion? thanks.

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• Fast way to compute the minimal distance of two sets of k-dimensional vectors

  - by vrld

  I two sets of k-dimensional vectors, where k is around 500 and the number of vectors is usually smaller. I want to compute the (arbitrarily defined) minimal distance between the two sets. A naive approach would be this: (loop for a in set1 for b in set2 minimizing (distance a b)) However, this requires O(n² * distance) computations. Is there a faster way of doing this?

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• in R, how can i save the value of "print"

  - by alex

  in R , when i use "print", i can see all the values, but how can i save this as a vector for example, in for loop, for (i in 1:10), i want the value of A , when i= 1,2,3,4..... but if i use the x=A, it only have the final value of A which is the value when i = 10. so , how can i save the vaule in print(A)

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• Python execute a function for X seconds

  - by theactiveactor

  I'm looking for a way for a function to take actions based on how long it has been executing. For example, my function would loop continuously until 5 seconds has elapsed, in which case it returns immediately. Any suggestions?

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• problem saving an image!!!

  - by anurag

  Hi I am developing an application for iphone that will pick an image from photo library and save it at some other place.Now in my application i will be using this image later on from that place. So can anybody suggest the folder where should i save this image so that the application works perfectly on device also.

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• Incorrect rotation of a view controller in iOS 6

  - by XenElement

  In my app I've been using the now deprecated shouldAutoRotateToFace method. Now when using the iOS 6 simulator, all of my subviews are rotated to portrait orientation while the device is in landscape. Does anyone have any idea what could cause this? I've already tried replacing should autorotate in my main view controller with the supportedOrientations method (or whatever it is that you're now supposed to use instead).

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• How to get the shortest time and longest time(or timespan) from a list using LINQ?

  - by shanthiram

  hi all, I am trying to get the longest and shortest timespan in a list using LINQ. My code looks something like this List listofTimeSpans = new List(); adding the timespans to listofTimeSpans in a foreach loop. Please help me with this. Thank you.

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• Dividing a string into list according to the format given

  - by user506710

  Hello all , I have a string like "SAB_bARGS_D" . What I want is that the string gets divided into list of characters but whenever there is a _ sign the next character gets appended to the previous one. So the answer to above should be ['S','A','B_b','A','R','G','S_D'] It can be done by using a for loop traversing through the list but is there an inbuilt function that I can use..... Thanks a lot

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• Quick way to make 26 macros (one for each letter)

  - by Geoff

  Instead of making a macro for each letter, as in \def\bA{\mathbf{A}} ... \def\bZ{\mathbf{Z}} Is there a way to loop over a character class (like capital letters) and generate macros for each? I'd also like to do the same for Greek letters (using bm instead of mathbf).

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• Why isn't Chrome displaying my div?

  - by Kyle Sevenoaks

  Click here to see a simple example of what I want. It's really easy, but for some reason Google won't display it. It's part of a foreach loop, if needed I can add other codes. There is nothing else in the rest of the css to mess with this, I have checked about 10 times. Thanks.

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• I need a row Added event for a DataGridView

  - by tizzyfoe

  What i want to do is set the background of a row based on some criteria, but the datagrid will be fairly large so i don't want to have to loop over all the rows again. The rows get created me doing something like "myDataGridView.DataSource = MyDataSource, so the only way i can think to edit rows is by using an event. there is a row*s* added event, but that gives me a list of rows that i'd have to iterate over. Thanks in advance for any help.

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• Convert Nulls to Empty String in an object.

  - by John

  What is the easiest way to take an objects and convert any of its values from null to string.empty ? I was thinking about a routine that I can pass in any object, but I am not sure how to loop through all the values.

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• Looping over all tabs in IE 8

  - by Quandary

  Question: I want to loop over all open tabs in Internet Exporer (for all open IE windows) and save the URL in a text file. How can I do that ? I have windows 7 32 bit and IE 8. Code for Firefox/Google chrome would also be welcome.

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• Multi-monitor application in C++ and Opengl

  - by user351979

  hi, I develop an application in C++ on Windows and i don't know in Openlg how to initialize several device or screen for an multi-monitor application. Thanks Paul

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• Is it possible to create a hidden property in javascript

  - by tmim

  I want to create an object with a hidden property(a property that does not show up in a for (var x in obj loop). Is it possible to do this?

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• Memory consumed by an object during its lifetime

  - by makboney

  How can i trace memory consumed by an object in its life time when i am testing my application on device? [e.g.: without any instruments if possible]

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• For loops in Matlab

  - by seidel

  I run through a for loop, each time extracting certain elements of an array, say element1, element2, etc. How do I then pool all of the elements I've extracted together so that I have a list of them?

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• Does in_array() use a binary search algorithm?

  - by morpheous

  I have a largish array of string that I want to use as a lookup. I a using in_array(), but I suspect its doing a simple loop through - does anyone know whether the in_array() algo uses a bsearch algo?

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• How do I access the array submit() calls in the dom?

  - by Alex

  I want to grab all the inputs inside a form, in order to submit them. The point of this is to use jquery's ajax to submit a dynamically sized form. Surely there must be an array inside the dom somewhere which i can just do something like... docment.forms['form'].elements which only lists inputs for that form, meaning I can loop through them and grab their values to play around with?

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• add 2 chars without using strncopy ?

  - by every_answer_gets_a_point

  how would i manually add two chars without using the strncopy function? can i just say char1 + char2? or would i have to write a for loop to get individual elements and add them like this: addchar[0] = char1[0]; addchar[1] = char1[1]; etc etc addchar[n] = char2[0]; addchar[n+1] = char2[1]; etc etc

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• Is there a function for checking whether a matrix is diagonally dominant (row dominance)

  - by ldigas

  A matrix is diagonally dominant (by rows) if its value at the diagonal is greater then the sum of all absolute value in that row. Same goes for columns, only the other way around. Is there a function in matlab for chekcing this ? (I could write a simple loop, but I'm trying to quit those).

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• How to send ctrl+z

  - by I__

  How do I convert ctrl+z to a string? I am sending this as an AT COMMAND to an attached device to this computer. Basically, I just to put some chars in a string and ctrl+z in that string as well

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• HTML Response compared with old html

  - by inetech

  I have a respone returned as 'response' I need to compare it with old HTML. If it is different it will just do some css. The problem is it detects a different change everytime even when there is no difference and there is a continueous loop which makes my animation on css repeat itself. Anyone help?

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