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  • What files should be added to SVN in an eclipse Java project?

    - by Jake Petroules
    I have a Java project I'd like to commit to my SVN repository, created with eclipse. Now, what files (aside from the source code, obviously) are necessary? In the workspace root, there is a .settings folder with many files and subfolders, and inside the project folder there are two files - .classpath and .project, and another .settings folder with a single file - org.eclipse.jdt.core.prefs. Which of these files should be committed to SVN and which can be safely excluded?

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  • Easiest (simple) explanation of "prototype" in JavaScript?

    - by alexeypro
    Hello, Can somebody give me a resource (or just explanation? :-) of what "prototype" is and how it works in Javascript. May be comparison with something in Java? (not really necessary). But it should be as simple/easy as possible so inexperienced person just learning Javascript would understand (need to explain this to jr designer who is proficient with CSS/HTML, but not with Javascript). Thank you!

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  • BlackBerry Error

    - by Akhter
    I am trying to developing an android app for blackberry Playbook. For this i have installed all the necessary tools for blackberry development in android.For month ago i run some android apps on BB playbook. for this a debug token is needed which expired in a month. then today i develop a new debug token and run my new android app on BB Playbook but its not running and gives lots of errors and a red cross on the project folder i don't know why its happening.

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  • How to get the last element by date of each "type" in LINQ or TSQL

    - by Mauro
    Imagine to have a table defined as CREATE TABLE [dbo].[Price]( [ID] [int] NOT NULL, [StartDate] [datetime] NOT NULL, [Price] [int] NOT NULL ) where ID is the identifier of an action having a certain Price. This price can be updated if necessary by adding a new line with the same ID, different Price, and a more recent date. So with a set of a data like ID StartDate Price 1 01/01/2009 10 1 01/01/2010 20 2 01/01/2009 10 2 01/01/2010 20 How to obtain a set like the following? 1 01/01/2010 20 2 01/01/2010 20

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  • Adobe Flex Combobox as itemrenderer

    - by JonoB
    I have a flex combobox as a datagrid itemrenderer. However, after selecting an item in the combobox, its necessary to click out of the combo (i.e. into another cell or elsewhere in the app) for the value to be committed to the combo. Prior to this, the combo sits 'proud' of the datagrid and the value hasnt actually been committed. Is there a way to force the value to be immediately committed after an item has been selected and for the combo to 'lose focus'?

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  • SQL Server: Are temp tables or unions better?

    - by Jonathan Allen
    Generally speaking, for combining a lot of data is it better to use a temp table/temp variable as a staging area or should I just stick to "UNION ALL"? Assumptions: No further processing is needed, the results are sent directly to the client. The client waits for the complete recordset, so streaming results isn't necessary.

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  • SmallestDotNet as CustomAction after MSI installation

    - by Kai
    Is there anything to be said againt installing SmallestDotNet 3.5 (http://www.hanselman.com/blog/SmallestDotNetOnTheSizeOfTheNETFramework.aspx) as a CustomAction after MSI installation to ensure that .NET 3.5 is installed? I've found many more complicated ways which (partly) include .NET framework into the installer. How would you install (if necessary) the .NET 3.5 framework after msi installation automatically?

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  • Adding comments to SVN revisions

    - by pako
    I'm using Subversion 1.6 and WebSVN. I'm looking for a simple tool, that would enable me to add custom comments to SVN revisions. So I would be able to see the stream of incoming revisions and mark which of them I already reviewed. An ability to share the comments with other programmers would also be a welcome addition, but it's not necessary. Could you recommend any tools for this?

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  • PHP form validation question?

    - by GeNx
    Is it necessary to validate a name or street address? when I have it coded in the following format. And if so why? $address = mysqli_real_escape_string($mysqli, htmlentities($_POST['address'])); $name = mysqli_real_escape_string($mysqli, htmlentities($_POST['name']));

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  • How can I find installed programs dependent on any version of the .NET framework?

    - by Russ
    I have an application that uses .NET 3.5SP1, but I have been having a LOT of random crashes with it. I am starting to narrow the fields of possible causes to the framework itself, where I suspect some other app is installing a lower patch version. Is there any apps in the wild, or anything I can slap together that can tell me what apps that are installed that depend on .NET to run? Their minimum required version would be nice to know also, but not necessary.

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  • Best practice for handling ConnectionDroppedHandler in OCS Server Application

    - by Paul Nearney
    Hi all, In general, it seems that the majority of times that ConnectionDroppedHandler would get called in an OCS server application is for expected reasons e.g. server application has been unregistered, server is shutting down, etc. Are there any unexpected situations in which ConnectionDroppedHandler can be called? Basically, i'm wondering whether it will ever be necessary to log an error to the event log from this event handler. Many thanks, Paul

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  • Finding a certain cell in gridview through the use of column and row

    - by newName
    I have a populated gridview that consist of template fields. I would like to find/check a certain number of cells using values of rows and columns. Eg: |Time|col1|col2|col3|col4|col5| |1200|------|-----|-----|------|-----| |1300|------| -X- |-----|------|-----| |1400|------|-----|-----|------|-----| lets say i have the value "1300" for the row and the column header text "col2", I would like to find the cell marked "X" and check for some condition and change the text if necessary (col1 - col5 are template fields made up of labels and buttons, so therefore base on certain conditions i would like to show/hide the labels/buttons or change the text for the labels) Thanks

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  • difference equations in MATLAB - why the need to switch signs?

    - by jefflovejapan
    Perhaps this is more of a math question than a MATLAB one, not really sure. I'm using MATLAB to compute an economic model - the New Hybrid ISLM model - and there's a confusing step where the author switches the sign of the solution. First, the author declares symbolic variables and sets up a system of difference equations. Note that the suffixes "a" and "2t" both mean "time t+1", "2a" means "time t+2" and "t" means "time t": %% --------------------------[2] MODEL proc-----------------------------%% % Define endogenous vars ('a' denotes t+1 values) syms y2a pi2a ya pia va y2t pi2t yt pit vt ; % Monetary policy rule ia = q1*ya+q2*pia; % ia = q1*(ya-yt)+q2*pia; %%option speed limit policy % Model equations IS = rho*y2a+(1-rho)yt-sigma(ia-pi2a)-ya; AS = beta*pi2a+(1-beta)*pit+alpha*ya-pia+va; dum1 = ya-y2t; dum2 = pia-pi2t; MPs = phi*vt-va; optcon = [IS ; AS ; dum1 ; dum2; MPs]; He then computes the matrix A: %% ------------------ [3] Linearization proc ------------------------%% % Differentiation xx = [y2a pi2a ya pia va y2t pi2t yt pit vt] ; % define vars jopt = jacobian(optcon,xx); % Define Linear Coefficients coef = eval(jopt); B = [ -coef(:,1:5) ] ; C = [ coef(:,6:10) ] ; % B[c(t+1) l(t+1) k(t+1) z(t+1)] = C[c(t) l(t) k(t) z(t)] A = inv(C)*B ; %(Linearized reduced form ) As far as I understand, this A is the solution to the system. It's the matrix that turns time t+1 and t+2 variables into t and t+1 variables (it's a forward-looking model). My question is essentially why is it necessary to reverse the signs of all the partial derivatives in B in order to get this solution? I'm talking about this step: B = [ -coef(:,1:5) ] ; Reversing the sign here obviously reverses the sign of every component of A, but I don't have a clear understanding of why it's necessary. My apologies if the question is unclear or if this isn't the best place to ask.

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  • Opinion on "loop invariants", and are these frequently used in the industry?

    - by Michael Aaron Safyan
    I was thinking back to my freshman year at college (five years ago) when I took an exam to place-out of intro-level computer science. There was a question about loop invariants, and I was wondering if loop invariants are really necessary in this case or if the question was simply a bad example... the question was to write an iterative definition for a factorial function, and then to prove that the function was correct. The code that I provided for the factorial function was as follows: public static int factorial(int x) { if ( x < 0 ){ throw new IllegalArgumentException("Parameter must be = 0"); }else if ( x == 0 ){ return 1; }else{ int result = 1; for ( int i = 1; i <= x; i++ ){ result*=i; } return result; } } My own proof of correctness was a proof by cases, and in each I asserted that it was correct by definition (x! is undefined for negative values, 0! is 1, and x! is 1*2*3...*x for a positive value of x). The professor wanted me to prove the loop using a loop invariant; however, my argument was that it was correct "by definition", because the definition of "x!" for a positive integer x is "the product of the integers from 1... x", and the for-loop in the else clause is simply a literal translation of this definition. Is a loop invariant really needed as a proof of correctness in this case? How complicated must a loop be before a loop invariant (and proper initialization and termination conditions) become necessary for a proof of correctness? Additionally, I was wondering... how often are such formal proofs used in the industry? I have found that about half of my courses are very theoretical and proof-heavy and about half are very implementation and coding-heavy, without any formal or theoretical material. How much do these overlap in practice? If you do use proofs in the industry, when do you apply them (always, only if it's complicated, rarely, never)?

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  • How do I make a suckerfish/superfish CSS dropdown that sticks to the right hand side of the page?

    - by joeforker
    I am developing a CSS dropdown menu based on the suckerfish CSS. I would like to put it on the right hand side of the page but the menus extend from the leftmost edge of each menu to the right, instead of from the rightmost edge of each menu to the left (as is necessary to keep the rightmost dropdown menu from opening outside the visible area.) How do I position my suckerfish dropdown menus to extend to the left, instead of the right?

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  • Fetch all emails in PHP.

    - by Muhammad Sajid
    Hello. I want to fetch all my emails available in different online accounts eg:(gmail, yahoo, hotmail, aol, etc..) using PHP such that if necessary to reply any email then I could reply. How it is possible?

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