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• Extracting a given number of the highest values in a List

  - by James P.

  I'm seeking to display a fixed number of items on a web page according to their respective weight (represented by an Integer). The List where these items are found can be of virtually any size. The first solution that comes to mind is to do a Collections.sort() and to get the items one by one by going through the List. Is there a more elegant solution though that could be used to prepare, say, the top eight items?

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• postgresql insert value in table in serial value

  - by Jesse Siu

  my database using postgresql. the table pk is uing serial value.if i want to insert a record in table, do i need type pk or it will automatic contain id. Can you give me a example about how to insert a record in dataset CREATE TABLE dataset ( id serial NOT NULL, age integer NOT NULL, name character varying(32) NOT NULL, description text NOT NULL DEFAULT ''::text CONSTRAINT dataset_pkey PRIMARY KEY (id ) )

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• what is the equivalent of object in C# for objective C?

  - by Wayne Lo

  In c# I can declare object o; then I can assign o=(float)5.0; or o="a string." Is there an equivalent for Objective-C? I tried to use id but it does not take primitive type like float or integer. Thanks for helping.

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• Finding the position of the max element

  - by Faken

  Is there a standard function that returns the position(not value) of the max element of an array of values? For example: say i have an array like this: sampleArray = [1, 5, 2, 9, 4, 6, 3] I want a function that returns the integer of 3 that tells me that sampleArray[3] is the largest value in the array.

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• Communicate between separate MPI-Programs

  - by Fyg

  I have the following problem: Program 1 has a huge amount of data, say 10GB. The data in question consists of large integer- and double-arrays. Program 2 has 1..n MPI processes that use tiles of this data to compute results. How can I send the data from program 1 to the MPI Processes? Using File I/O is out of question. The compute node has sufficient RAM.

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• Copy List of Structures to Excel Range

  - by KDP

  Does anyone know how to copy a VB.Net list of structures to an Excel range? It's not hard to do with an array, but I can't get a list of structures to work. Example: Structure MyStruct Dim MyField1 as String Dim MyField2 as Integer End Structure Dim MyList As New List(Of MyStruct) ...populate list of structures... Dim rng as Excel.Range = MySheet.Range("A1","B9") rng.??? = MyList '*** This is where I get stuck. ***

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• Compare floating point numbers in Latex

  - by Abhi

  I am trying to use \ifthenelse to do a floating point comparison. This is the pgf/tikz code, which works if \y is integer only, but not otherwise: \foreach \y in {3,3.5,...,6} { ifthenelse{\y<3}{ ... }{ ... } }

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• java: how for loop work in the case of BigInteger

  - by Sanjeev

  I want to take Input from the user as Big-Integer and manipulate it into a For loop BigInteger i; for(BigInteger i=100000;i<=1;i--){ i=i+i; } But it won't work can any body help me.

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• c program triangle [closed]

  - by Johnathon

  C program that accepts three integer values from the user representing the three sides of a triangle. echo whether the 3 numbers makes a equilateral, scalene or isosceles triangle.

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• What is fastest way to find number of matches between arrays?

  - by John Sheares

  Currently, I am testing every integer element against each other to find which ones match. The arrays do not contain duplicates within their own set. Also, the arrays are not always equal lengths. Are there any tricks to speed this up? I am doing this thousands of times, so it starting to become a bottle neck in my program, which is in C#.

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• The internal implementation of R's dataset

  - by Yin Zhu

  I am trying to build a data processing program. Currently I use a double matrix to represent the data table, each row is an instance, each column represents a feature. I also have an extra vector as the target value for each instance, it is of double type for regression, it is of integer for classification. I want to make it more general. I am wondering how what kind of structure R uses to store a dataset, i.e. the internal implementation in R.

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• How to check how many times something occurs in a string in PHP

  - by John

  I want to check how many instances of the letter "a" appears in a certain string. What is the function for this? I need it to return an integer value.

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• Perl, convert hash to array

  - by Mike

  If I have a hash in Perl that contains complete and sequential integer mappings (ie, all keys from from 0 to n are mapped to something), is there a means of converting this to an Array? I know I could iterate over the key/value pairs and place them into a new array, but something tells me there should be a built-in means of doing this.

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• c program tringle

  - by Johnathon

  C program that accepts three integer values from the user representing the three sides of a triangle. echo whether the 3 numbers makes a equilateral, scalene or isosceles triangle.

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• How to change a JLabel's text in a loop without switching so fast the user can't see it?

  - by guilgamos

  I want to create a simple clock using Java. The code is so simple that I will give an example: for(int i=0;i<=60;i++) jLabel11.setText( Integer.toString(i) ); The problem is while I'm running my program the result didn't show each update in sequence. It show only the 60 digit immediately, without showing the change from 1 to 2 to 3 ... How can i fix this problem?

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• How can we access the variables declared in another class without using extern ?

  - by srikanth rongali

  Can we access the integer type variables in classB which are declared in classA by not using extern? For objects I used ClassA *obj1 = [[ClassA alloc]init]; And accessed the objects of classA into class B. But, I am not able to do them with the int , float, NSTimeInterval. How can we do for them without using extern ? Thank You.

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• How do I customize the ASP.Net Bubble Event to pass an additional variable?

  - by CowKingDeluxe

  I am using BubbleEvent to give events from a web user control to its parent (which is a Default.aspx with code behind page). I would like to use BubbleEvent to not only pass the sender and event, but also an integer or another variable. Is there a way to add a parameter to the BubbleEvent, or is there a different way I should be approaching this?

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• jQuery.inArray() - eclipse tells me this function is not defined

  - by Ankur

  I have used the jQuery inArray function, but Eclipse tells me that this function is undefined. I don't understand how this can be so if it comes from the jQuery API. preId is an integer, and queryPreds is an array. if($.inArray(preId, queryPreds) != -1){ // code in here }

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• Can doubles be used to represent a 64 bit number without loss of precision

  - by Kop

  I want to use lua (that internally uses only doubles) to represent a integer that can't have rounding errors between 0 and 2^64-1 or terrible things will happen. Is it possible to do so?

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• Is this possible in Java: Map<SomeObject, Map<SomeOtherObject>>?

  - by davek

  Is this possible in Java: Map<SomeObject, Map<SomeOtherObject>>? I'm trying Map<Integer, Map<String>> am getting an "Incorrect number of arguments for type Map; it cannot be parameterized with arguments " error.

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• Binary Addition. Is it overflow?

  - by xbonez

  Binary values are in 2s Complement form. If I am to add 110001 (-15) and 101110 (-18), and the answer has to be stored in a 6-bit integer, is this an underflow/overflow.

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• Importing data from file to array

  - by stamp

  I have 2 dimensional table in file, which look like this: 11, 12, 13, 14, 15 21, 22, 23, 24, 25 I want it to be imported in 2 dimensional array. I wrote this code: INTEGER :: SMALL(10) DO I = 1, 3 READ(UNIT=10, FMT='(5I4)') SMALL WRITE(UNIT=*, FMT='(6X,5I4)') SMALL ENDDO But it imports everything in one dimensional array.

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• Ordering sql query results

  - by user343409

  My sql query gives the columns: product_id (which is an integer) pnl (which is float - can be negative) I get more than 100 rows. I want to filter out the top 40 rows based on abs(pnl). But the results should be ordered by pnl column only and not by abs(pnl). I want to do this for MSSQL 2005. Is there a way to do this?

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• Is possible overwriting a Doctrine model in Symfony?

  - by user248959

  Hi, is possible overwriting a Doctrine model in Symfony? I'm trying no change a "notnull" property, but i can get it.. In 'plugins/sfDoctrineGuardPlugin/config/doctrine/schema.yml': sfGuardUser: actAs: [Timestampable] columns: id: type: integer(4) primary: true autoincrement: true username: type: string(128) notnull: true unique: true #... And in 'config/doctrine/schema.yml': sfGuardUser: columns: username: type: string(128) notnull: false unique: true Then "build-all-reload" but it doesn't change.. Any idea? Javi

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• How to mutibind three properties, to dispatch the last change to all properties?

  - by WPFadvocate

  In WPF, I've three objects exposing the same DependencyProperty (let's say it's an integer). I want all three property values to remain synchronized, i.e. that whenever the int value changes in an object, this value is propagated to the two other objects. I think of multibinding to do the job, but I don't know how to detect which object changed, thus which value should be used and propagated to the other objects.

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