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  • Grid forms in Rails

    - by KandadaBoggu
    I am trying to create a grid form for a survey question. value1 value2 value3 option 1 x option 2 x option 3 x Each cell in the grid is a radio button and the radio buttons in a row belong to one radio button group. My models: class Question # title has_many :answers end class Answer # name, position, atype(row/col) end I am struggling to come up with a Rails approach for creating such a form. To complicate the issue user can save the semi-completed form and complete it at a later time. What is the best approach for this problem?

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  • (Symfony) How can i change the templating of a form in sfDoctrineGuardPlugin ?

    - by ruic
    How can i change the templating of a form in sfDoctrineGuardPlugin? That is, I need to change the html (class, id) of the input elements (username, password) of a login form provided by sfDoctrineGuardPlugin. I've changed apps/app_name/modules/sfGuardAuth/templates/singinSuccess.php, but it then just echoes $form (I need to change contents of that part - $form): <form action="<?php echo url_for('@sf_guard_signin') ?>" method="post"> <table> <?php echo $form ?> </table> <input type="submit" class="go_button" value="ir" /> <a href="<?php echo url_for('@sf_guard_password') ?>"><?php echo __('Forgot your password?') ?></a> </form> (It really should be something like changing a _form.php = I cant find this, though :S) Thank you all for any answers provided =)

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  • What's the simplest way to let the user download a file in ASP.NET MVC ?

    - by drasto
    In an ASP.NET MVC I have a database table. I want to have a button on some view page, if some user clicks that button I my application will generate XML file containing all rows in the database. Then the file containing XML should be sent to the client so that the user will see a download pop-up window. Similarly I want to allow user to upload an XML file whose content will be added to the database. What's the simplest way to let the user upload and download file ? Thanks for all the answers

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  • Ruby Methods: return an usage string when insufficient arguments are given

    - by Shyam
    Hi, After creating a serious bunch of classes, with initialize methods, loading them in IRb requires to look back at the code. However, I think it should be easy enough to return a usage message, instead of: ArgumentError: wrong number of arguments (0 for 9) So I prefer to return a string with the human readable arguments, by example using "puts" or just a return of a string. Now I have seen the rescue keyword inside begin-end code, but I wonder how I could catch the ArgumentError when the initialize method is called. Thank you for your answers, feedback and comments!

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  • Regex "or" Expression

    - by David
    This is probably a really basic question, but I can't find any answers. I need to match a string by either one or more spaces OR an equals sign. When I split this string: 9 x 13 = (8.9 x 13.4) (89 x 134) with ( +) I get: part 0: 9 x 13 = (8.9 x 13.4) part 1: (89 x 134) When I split it with (=) I get: part 0: 9 x 13 part 1: (8.9 x 13.4) (89 x 134) How can split by BOTH? Something like: (=)OR( +) Edit: This does not work(=)|( +) Test it here: http://myregexp.com/ under "split".

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  • How to open the command prompt and insert commands using Java?

    - by 404 Not Found
    There have been a few other questions on here sort of like this, but none seem to have any answers. Is it possible to open the command prompt (and I guess any other terminal for other systems), and execute commands in the newly opened window? Currently what I have is this: Runtime rt = Runtime.getRuntime(); rt.exec(new String[]{"cmd.exe","/c","start"}); I've tried adding the next command after the "start", I've tried running another rt.exec containing my command, but I can't find a way to make it work. If it matters, I'm trying to run a command similar to this: java -flag -flag -cp terminal-based-program.jar

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  • Computer science versus software engineering - which?

    - by Will M
    Something I think Jeff & Joel touched on in an early stackoverflow podcast, though I don’t remember if they reached a conclusion: which curriculum is better preparation for a career as a developer and software entrepreneur, computer science in the liberal arts college, or software engineering in the engineering school? or, put another way, which credential should I look for in someone being added to my team, or to hire for my company (if I had one . . . )? Edit note: initial post mistakenly asked to compare computer science with computer engineering, rather than software engineering, and some answers relate to that question.

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  • How to find the number of inversions in an array ?

    - by Michael
    This is an phone interview question: "Find the number of inversions in an array". I guess they mean O(N*log N) solution since O(N^2) is trivial. I guess it cannot be better than O(N*log N) since sorting is O(N*log N) I have checked a similar question from SO and can summarize the answers as follows: Calculate half the distance the elements should be moved to sort the array : copy the array and sort the copy. For each element of the original array a[i] find it's position j in the sorted copy (binary search) and sum abs(i - j)/2. Modify merge sort : modify merge to count inversions between two sorted arrays (it takes O(N)) and run merge sort with the modified merge. Does it make sense ? Are there other (maybe simpler) solution ? Isn't it too hard for a phone interview ?

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  • Require help with program for edutainment game

    - by Ender
    I am working on a factorisation problem and for small numbers it is working well. I've been able to calculate the factors (getting the answers from Wolfram Alpha) for small numbers, like the one on the Wikipedia page (5959). Along with the Wikipedia page I have been following this guide. Once again, as my Math knowledge is pretty poor I cannot follow what I need to do next. EDIT: It finally works! I'll post the working code up here once I've got it fully working so that others in my predicament can learn from it.

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  • Changing the contents of a file with sed in Solaris 10

    - by ubersol
    Hello, I have a bash script that I want to change all occurrences of jdk1.5.0_14 with jdk1.6.0_20 in a file I have the following piece of code : #!/bin/bash myvar="jdk1.6.0_20" sed "s/jdk1.*/$myvar/g" answer_file.1 > answer_file.2 However I have the following information in answer_file.1 (pasting the relevant part): JDKSelection.directory.JDK_LIST=/usr/jdk/jdk1.5.0_14 (v. 1.5.0_14 by Sun Microsystems Inc.) JDKSelection.directory.HIDDEN_JDK=/usr/jdk/jdk1.5.0_14 The code above changes the occurence of jdk1.5.0_14 to jdk1.6.0_20 but also removes the information contained in paranthesis in the first line. So after the change, I need the answer_file.2 file look like this: JDKSelection.directory.JDK_LIST=/usr/jdk/jdk1.6.0_20 (v. 1.6.0_20 by Sun Microsystems Inc.) JDKSelection.directory.HIDDEN_JDK=/usr/jdk/jdk1.6.0_20 How can I achieve this? Thanks for your answers....

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  • Is there a way to have one project build another in Visual Studio?

    - by Martin Neal
    We are finally getting a source control system in place at work and I've been in charge of setting it up. I've read that it's usually good practice to not include binaries in source control so I haven't. However, we have two all-purpose utility projects (each in their own solution) that generate utility .dll's which are included in almost all of our other projects (all each in their own separate solutions). We add references to the utility dll from our projects. I would like to have our solutions set up in such a way that if the reference dll isn't built, the solution will build the dll for itself, much in the same way a make file checks for its dependencies and builds them when they're out of date or missing. I'm new to build processes with VS so try to keep the answers simple. Any links to general build process overview tutorials would be great too. Googleing for VS references returns a bunch of how-to add references links which is not exactly what I want.

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  • PHP Store User Data without Sessions

    - by Sev
    Is there anyway to store users data such as userid, email, etc to be accessible from all pages of a website after they have logged in, but without using sessions or cookies? For example: class User { var $userid; var $username; var $email; .. methods.. } after they login at login.php $currentUser = new User($_POST['username']) now, how do I access $currentUser from another page, such as index.php if I shouldn't use sessions or cookies at all? so that I could do the following in index.php: if ($currentUser->userid > -1) { echo "you are logged in as: " . $currentUser->username; } else { echo "click here to login"; } i asked a similar question before, here, but the answers didn't fulfill my needs.

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  • What is the easiest way to deploy a MVC2 application from Visual Studio 2010 to IIS 7.5?

    - by Richard
    I´ve tried a couple of different ways to deploy a application to a IIS 7.5 running on my machine for testing purposes and i´ve sort of hit a wall. Nothing works out of the box. Everything assumes I have knowledge I don't have and would prefer not to have to aqquire. Google isn't really helping either with answers ranging from "copy files by hand" to "install teamcity and set it up for CI". I have set up TeamCity for java projects before and it's really over kill for my needs at the moment. So anyone know of a fast, simple and easy way to deploy a application during testing/building?

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  • Hiding result sets from multiple selects in a stored procedure

    - by Josh Young
    I have a stored procedure that retrieves SQL queries as text and executes the statements using sp_executesql. Each of the dynamic queries is a count query in that it only returns the number of records found (select COUNT(id) from...). I am looping through a set of SQL queries stored as text and building a table variable out of the results. At the end, I am selecting all the results from the table variable as the result set that I want returned from the stored procedure. However, when I execute the stored procedure, I am naturally getting multiple result sets (one for each of the dynamic queries and one for the final select.) Is there any way I can suppress the results of a select statement executed through sp_executesql? I have found answers that reference storing the results in a temp table, but I don't have control of the query text that I am running so I can't change it to select into anything. Please help. Thank you for your time.

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  • Representing a very large array of bits in little memory

    - by user614624
    Hello, I would like to represent a structure containing 250 M states(1 bit each) somehow into as less memory as possible (100 k maximum). The operations on it are set/get. I cold not say that it's dense or sparse, it may vary. The language I want to use is C. I looked at other threads here to find something suitable also. A probabilistic structure like Bloom filter for example would not fit because of the possible false answers. Any suggestions please?

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  • Max. # of printers allowed for google cloud print

    - by user1858673
    I intend to write an online shopping program using PHP. When the buyer completes an order I want to print the receipt to his/her printer using Google Cloud Print. For that I will need the buyer to shared his/her printer with my Google account. My questions are: 1. Is there an upper bound for the number of printers a Google account is allowed to print to? 2. Is there a daily upper bound for the number of print jobs a Google account is allow? Thanks for reading and thanks for the answers in advance.

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  • Prevent auto scrolling when clicking tab anchor

    - by JohnCrossy
    On my page I have some tabs that I've added some javascript so when they're clicked the page loads the tab's anchor URL instead of simply changing the view with AJAX, but I now want to stop the browser from auto scrolling to the anchor location. Having done some research, I'm pretty sure I just need to add a couple of lines so that when clicked it returns false or prevents default but, being a noob, I've no idea where to put them!?! I know it's cheeky, but if any answers could include the full script (ie. the below) with the solution, that way I'll understand better and hopefully learn some valuable lessons also :) Here's the code I'm using: jQuery( function() { jQuery('.ui-tabs').bind( 'tabsselect', function( e, ui ) { window.location.hash = ui.tab.hash }); });

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  • How can I remove a duplicate object from a MongoDB array?

    - by andrewrk
    My data looks like this: foo_list: [ { id: '98aa4987-d812-4aba-ac20-92d1079f87b2', name: 'Foo 1', slug: 'foo-1' }, { id: '98aa4987-d812-4aba-ac20-92d1079f87b2', name: 'Foo 1', slug: 'foo-1' } { id: '157569ec-abab-4bfb-b732-55e9c8f4a57d', name: 'Foo 3', slug: 'foo-3' } ] Where foo_list is a field in a model called Bar. Notice that the first and second objects in the array are complete duplicates. Aside from the obvious solution of switching to PostgresSQL, what MongoDB query can I run to remove duplicate entries from foo_list? Similar answers that do not quite cut it: http://stackoverflow.com/a/16907596/432 http://stackoverflow.com/a/18804460/432 These questions answer the question if the array had bare strings in it. However in my situation the array is filled with objects. I hope it is clear that I am not interested in a query; I want the duplicates to be gone from the database forever.

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  • Maven release prepare without prompts?

    - by Bruce Settergren
    I want to automate the execution of Maven release:prepare with Perl so that the user doesn't have to answer the prompts for version names etc. Are there a -D arguments that can be supplied so that no prompting is done? I tried the obvious solution which is to feed the prompt answers to mvn via perl code like this: my $cmd = qq(mvn release:prepare -DautoVersionSubmodules=true-DpreparationGoals="clean install"); open MVN, "| $cmd"; print MVN "\n"; # default print MVN "$cur_version"; print MVN "\n"; print MVN "$next_version"; print MVN "\n"; close MVN; but mvn ignores such input and winds up using the defaults (and doesn't prompt either). So, are there -D args for the release:prepare plugin:goal? Thanks.

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  • execute external command / application from java

    - by IttayD
    I'm looking for a package to support reliably executing external processes from Java. My criteria: Abstract over OS. So if I want to run 'foo', it will look for 'foo.bat', 'foo.exe' under windows and 'foo' under other OSs (or, have a way of passing a map of os-command) Being able to execute Java classes by simply giving the class name and arguments (so the package locates the java command, copies jvm flags and then executes) Process stdout and stderr properly Watchdog / Monitoring capabilities I've looked at commons-exec but it looks like it answers only 3 & 4. Ant has support for execution but looks like an overkill to use it for this purpose only.

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  • Use Javascript variable in PHP

    - by Rhepungus
    I have seen some answers to this question in previous posts, but no one has given a real working example, just psuedo code. Has anyone ever done this before? Basically, what i have is a variable in javascript (jquery), and i want to use this variable to drive a query (for an overlay window) i am going to run in php. From what i have read you can do this using an ajax call to the same page so it doesnt refresh itself, but i must be missing something because i can't get it working... Any examples out there? Thanks.

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  • Filtering out unique rows in MySQL

    - by jpatokal
    So I've got a large amount of SQL data that looks basically like this: user | src | dst 1 | 1 | 1 1 | 1 | 1 1 | 1 | 2 1 | 1 | 2 2 | 1 | 1 2 | 1 | 3 I want to filter out pairs of (src,dst) that are unique to one user (even if that user has duplicates), leaving behind only those pairs belonging to more than one user: user | src | dst 1 | 1 | 1 1 | 1 | 1 2 | 1 | 1 In other words, pair (1,2) is unique to user 1 and pair (1,3) to user 2, so they're dropped, leaving behind only all instances of pair (1,1). Any ideas? The answers to the question below can find the non-unique pairs, but my SQL-fu doesn't suffice to handle the complication of requiring that they belong to multiple users as well. [SQL question] How to select non "unique" rows

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  • QR Factorization Discrepancy

    - by KyleSum
    I'm trying to get a feel for the Intel MKL library with a simple back-solve (A*x = b) using a QR factorization and comparing my MKL answer to the answer of a known working solution. When my answers didn't come up correct I printed a diff between the Q and R matrices of the known working and the MKL test code. I know MKL/lapack uses "elementary reflectors" to store the values of both the Q and R matrices. So, I'm wondering if these differences (mostly +/-) are by design or the result of some bug. I'm using DGEQRF, DORMQR, and DTRSM routines to solve the system and DORGQR (for debugging) to get the Q matrix shown in the diff. diff with 6x6 matrix (top known, bottom mkl): http://pastebin.com/4uwcME0J

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  • Is it possible to set different select2 parameters at different times?

    - by ReiMasuro
    From playing around I can see that this code $("#Selected3").select2({ minimumInputLength: 3 }); $("#Selected3").select2({ placeholder: "Show a placeholder" }); will show me the placeholder but remove the minimumInputLength parameters value. Does anyone know a way please that this example could be modified so that the placeholder will be added without losing the minimum..Length value. Any answers will need to allow for the possibility of the statements being in separate files, i.e. one on the page and another in a referenced .js file. I am aware that this would be much easier if I set all the parameters at once, e.g. $("#Selected3").select2({ minimumInputLength: 3, placeholder: "Show a placeholder" }); but I am working within a framework which won't currently allow that. EDIT: For anyone who is willing to give this a shot but doesn't know select2 the library comes from here Select2 on GitHub

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  • Open dot-file with dialogue in OSX

    - by Henrik Paul
    Since the GUI-side of OSX treats all dot-files (such as .htaccess) as hidden, it doesn't display them in any of the graphical UI:s, e.g. Finder or the Open-dialogues. How can I open a dot-file (.htaccess in this case) in a graphical editor, without doing that thing for all hidden files, universally and without going through Terminal.app? Edit: I'm on Leopard, if that makes a difference. Edit2: TextWrangler and TextMate seem to have features that allow you to open hidden files, which partly answers my question.

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