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• antlr 3 ambiguity

  - by tcris

  Hello, I try to write some simple rules and I get this ambiguity rule: field1 field2; //ambiguity between nsf1 and nsf2 even if I use lookahead k=4 field1: nsf1 | whatever1...; field2: nsf2 | whatever2...; nsf1: 'N' 'S' 'F' '1'; //meaning: no such field 1 nsf2: 'N' 'S' 'F' '2'; //meaning: no such field 2 I understand the ambiguity, but I don't understand why lookahead doesn't solve this. I have a simple solution but I don't like it: rule: (nsf1 (nsf2 | whatever2)) | (whatever1 (nsf2 | whatever2)); Does anybody have a more elegant solution? Thanks a lot, Chris

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• letting absoltuely positioned area grow

  - by JCHASE11

  Please see this page for reference: test page I am designing a site that has a sidebar that contains an accordion style vertical nav bar. The sidebar which contains this accordion is absolutely positioned, relative to the container that holds it. I did this so the sidebar would stay sticky to the top, bottom, and side. When you click the products button, the accordion expands well past the container, overflowing into the footer. If I floated the sidebar to the left, it would grow to accommodate the entire sidebar, but it wouldn't be sticky to the bottom of the container by default. I need a solution that allows the sidebar to be absolutely positioned, and allow growth if the accordion expands. Any Ideas? Jquery solution perhaps?

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• Why does setting document.domain require me to set it in all popups and iframes too?

  - by Chris

  I'm using a long-polling iframe solution for a chat script. Unfortunately, this requires me to set document.domain='yourdomain.com' in the iframe and main document, because the iframe is a subdomain call. The huge problem is...now all my other scripts that use popups and iframes are broken. They now require me to put document.domain in them too. It does fix it, but this is not an ideal solution at all. Is there another way around this problem?

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• How do you make a WiX project build when dependent files have changes?

  - by Scott Langham

  Hi, I've adopted a Visual Studio solution that contains a number WiX projects. We build the solution from an MsBuild script to generate the product's installer msi. The problem I'm experiencing is that if I build (and don't rebuild), even if exe's and dll's get updated that need to be put in the installer, the WiX build system doesn't seem to detect this and skips building the installer as it thinks it's already up to date. How do I work out what the dependencies are that are needed to build a WiX project, and how do I tell the Wix build system to watch out for them changing so it knows to build instead of skip?

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• Are there any FTP programs which can automatically send the contents of a folder to a remote server?

  - by Nick G

  Are there any FTP programs which can automatically copy (or rather 'move') the contents of a folder to a remote server? I have of course googled this but only really found one or two ancient products which look really clunky and unmaintained. I was wondering if there's a way to do this from the command line or any better solution to the base problem. In more detail, new files get written to a folder every few hours. These new files need to be FTP'd elsewhere and then deleted. Mirroring or synchonisation systems are probably out of the picture as we need to delete the source files once they've been successfully transferred. If it's easier, the 'solution' could pull the files off the server (rather than the server pushing them to the client). The computers will both be Windows OS.

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• Circular reference while setting up bidirectional communication line between two remote objects

  - by mphair

  I'm using .Net remoting to set up a bidirectional communication line between two objects. The basic structure is as follows: Instances of RemoteObjectA call methods on StaticObjectA. Instances of RemoteObjectB call methods on StaticObjectB. StaticObjectA needs to be able to call methods provided by RemoteObjectB. StaticObjectB needs to be able to call methods provided by RemoteObjectA. The problem with this setup is the circular reference in RemoteObjectA gets StaticObjectA gets RemoteObjectB gets StaticObjectB gets RemoteObjectA... I implemented an interface IRemoteObjectA and IRemoteObjectB and had the remote objects inheret from their respective interfaces, but then setting up the remoting fails. If the solution to this problem is: "don't use remoting", I can deal with that. Just wanted to make sure I wasn't missing a simple solution.

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• Best way in Python to determine all possible intersections in a matrix?

  - by ssweens

  So if I have a matrix (list of lists) of unique words as my column headings, document ids as my row headings, and a 0 or 1 as the values if the word exists in that particular document. What I'd like to know is how to determine all the possible combinations of words and documents where more than one word is in common with more than one document. So something like: [[Docid_3, Docid_5], ['word1', 'word17', 'word23']], [[Docid_3, Docid_9, Docid_334], ['word2', 'word7', 'word23', 'word68', 'word982']], and so on for each possible combination. Would love a solution that provides the complete set of combinations and one that yields only the combinations that are not a subset of another, so from the example, not [[Docid_3, Docid_5], ['word1', 'word17']] since it's a complete subset of the first example. I feel like there is an elegant solution that just isn't coming to mind and the beer isn't helping. Thanks.

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• How to convert all images to JPG format in PHP?

  - by SzamDev

  I am developing a website in PHP that let the user to upload images and then let him to decide how the image should be using jQuery - PHP integeration to select the area that wanted to be the picture and then click the crop button to crop it and save it. The problem that I am facing is that not all images type are good to crop and save so I noticed that the easy solution for it to convert the image to JPG and then let the user to crop it because it's the easy way to do it in JPG format. How I can do it? Is this the best solution for images types problem?

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• PHP file modification time in milliseconds

  - by Steven Rosato

  I there, I am currently writing a unit test which asserts that a file did not get modified. The test code execution takes less than one second and therefore I would like to know if it is possible to retrieve the file modification time in milliseconds. filemtime() function returns the UNIX timestamp in seconds. My current solution is using the sleep(1) function which will assure me that 1 second passed before checking if it was modified or not. I don't like that solution since it slows down the test by a great deal. I cannot assert the content equality via get_file_contents() since the data that can be rewritten would be the same. I am guessing it is impossible, is it?

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• Fast comparison of char arrays?

  - by StackedCrooked

  I'm currently working in a codebase where IPv4 addresses are represented as pointers to u_int8. The equality operator is implemented like this: bool Ipv4Address::operator==(const u_int8 * inAddress) const { return (*(u_int32*) this->myBytes == *(u_int32*) inAddress); } This is probably the fasted solution, but it causes the GCC compiler warning: ipv4address.cpp:65: warning: dereferencing type-punned pointer will break strict-aliasing rules How can I rewrite the comparison correctly without breaking strict-aliasing rules and without losing performance points? I have considered using either memcmp or this macro: #define IS_EQUAL(a, b) \ (a[0] == b[0] && a[1] == b[1] && a[2] == b[2] && a[3] == b[3]) I'm thinking that the macro is the fastest solution. What do you recommend?

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• Alternative to css3 not selector

  - by Raynos

  Are there any alternatives to the :not css3 selector that are compliant with IE8 (and quirks mode). Either in css or javascript/jquery that emulates the selector or something similar. I am using *:not as follows below. Feel free to recommend a solution that avoids the use of :not completely. @media screen { #printable { visibility: hidden; } } @media print { *:not(#printable) { visibility: hidden; } #printable { position: absolute; visibility: visible; } } Note that the use of :not is tied to the use of @media print so just using a simple jQuery solution to apply css to $(":not(#printable)") won't work without being clever. Including an entire library like ie9.js or selectivirz isn't an option as it can effect various other parts of the pages and would involve a large section of re-testing. a jsfiddle that shows it working in browsers that support :not http://jsfiddle.net/Raynos/TjKbz/

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• Has anyone used a rails gem for lightbox functionality? If so which ones?

  - by bgadoci

  Trying to figure out what is the best solution for using lightbox in rails. I have a set up an application that has projects and posts belong_to project. A post can have multiple photos and I am successfully only displaying the first photo in the photos table in the projects show view for each post. I am now trying to allow the user to view the rest of the photos associated with a post through a lightbox feature. Any idea if there is a rails ready solution for something like this?

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• Best way to store 3rd party DLLs in VS 2008 +

  - by Greens

  What is the standard practice to store DLLs in a solution ,where the dlls are used in multiple projects.

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• Join data from two Lists into one object

  - by Petr Mensik

  I ran into following situation and I am wondering about best solution. Let's say I have List<Object1> and List<Object2>, these lists are result of two separated queries. Both of them have the same size and there is relationship 1:1 between elements in the lists based on ID. I know that best solution would be fetching data in one DB query but that's possible right now. So my question is, what is the best way to join these lists into let's say List<Object3>?

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• select randum value from one table and inserted to another in the same database??

  - by mathew

  I have removed the same. found myself a solution. No answer is required thanks

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• Tidying up a list

  - by Jonas

  I'm fairly sure there should be an elegant solution to this (in Matlab), but I just can't think of it right now. I have a list with [classIndex, start, end], and I want to collapse consecutive class indices into one group like so: This 1 1 40 2 46 53 2 55 55 2 57 64 2 67 67 3 68 91 1 94 107 Should turn into this 1 1 40 2 46 67 3 68 91 1 94 107 How do I do that? EDIT Never mind, I think I got it - it's almost like fmarc's solution, but gets the indices right a=[ 1 1 40 2 46 53 2 55 55 2 57 64 2 67 67 3 68 91 1 94 107]; d = diff(a(:,1)); startIdx = logical([1;d]); endIdx = logical([d;1]); b = [a(startIdx,1),a(startIdx,2),a(endIdx,3)];

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• Get next key-value pair in an object

  - by captainclam

  So, given a key, I want to find the next property in an object. Then, I want to return the value of the NEXT property. I can not rely on the keys to be ordered or sequential (they're uuids). Please see below for trivial example of what I want: var db ={ a: 1, b: 2, c: 3 } var next = function(db, key) { // ??? } next(db, 'a'); // I want 2 next(db, 'b'); // I want 3 I also want a prev() function, but I'm sure it will be the same solution. This seems like such a trivial problem but I can't for the life of me figure out how to do it. Happy for the solution to use underscore.js or be written in coffeescript :)

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• IE 7 CSS problem with detecting mouse over on div

  - by BeaverProj

  I have a div inside an li as part of a top navigation for a website. I'm having trouble with IE 7 having "holes" in the box such that the drop down disappears when the user is still on the drop down. I started with a pure CSS solution (li:hover) and that works awesome in all browsers except IE 7. So I've now added a jQuery/javascript solution to detect when the mouse enters and exits the nav li and then add a class to show the drop down. It works better, but if the mouse is not over an image, p, h3, or a tag then it doesn't think I'm over the div that is the drop down. Very frustrating. I can post some test code, but the issue can be viewed here: http://davincidays.org/ Anyone have any ideas? I've been working on this for waaaay too long already and need some fresh things to try.

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• InApp subscriptions - trasferability

  - by meap

  Apple has rejected one of our apps, where the user can purchase content through subscriptions (InApp product type is subscription). The problem is that we need to, also because of Apple requiring it, these subscriptions to be transferable between devices. The logical and also the most secure solution would be to link it to a user account, that the user will have to create. But this was the reason why apple rejected this app. They have told us that for purchasing of subscriptions a registration can not be required, can be only optional. So the question is how to solve this if there is no other nice solution that would make sense, be secure and still comfortable for the user?

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• Database Backup

  - by Jungle_hacker

  Scenario i want to take backup from 7 client database to 1 server database. i dont know structure of the db { either server or client db }. both databases are having old data. now i have to make the tool take the backup for that. and should possible to backup old data also[if any updates done on old data.] please help to find the solution for this. 1. how can i proceed with the problem. 2. database not specified, may be MS access or Sql server 2005 3. In which i can implement this [ I am thinking of doing it in c#] please help me to find the solution

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• strip version from package name using Bash

  - by cd1

  hi, I'm trying to strip the version out of a package name using only Bash. I have one solution but I don't think that's the best one available, so I'd like to know if there's a better way to do it. by better I mean cleaner, easier to understand. suppose I have the string "my-program-1.0" and I want only "my-program". my current solution is: #!/bin/bash PROGRAM_FULL="my-program-1.0" INDEX_OF_LAST_CHARACTER=`awk '{print match($0, "[A-Za-z0-9]-[0-9]")} <<< $PROGRAM_FULL` PROGRAM_NAME=`cut -c -$INDEX_OF_LAST_CHARACTER <<< $PROGRAM_FULL` actually, the "package name" syntax is an RPM file name, if it matters. thanks!

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• Javascript: How to escape Unicode Chars

  - by user293006

  JSON String: { "id":31896, "name":"Zickey attitude - McKinley, La Rosi\u00e8re, 21 ao\u00fbt 2006", ... } this causes an unterminated string in javascript. my focus on solution is: data.replace(/(\S)\1(\1)+/g, ''); or data.replace(/\u([0-9A-Z])/, ''); any ideas/solution? example: http://api.jamendo.com/get2/id+name+url+stream+album_name+album_url+album_id+artist_id+artist_name/track/jsonpretty/track_album+album_artist/?n=13&order=ratingmonth_desc&tag_idstr=jazz last node is the problem, fyi. (/\u([0-9A-Z])/, '\1');

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• Looking for python lib to manage remote tasks

  - by Riz

  Hi, I have server with django on it, this server runs some manage.py commands and update database. Now I need to move some of this tasks to different servers. I don't want to allow remote db access and need some tool\lib to be able to start task on remote servers by main server's command and update tasks code/add new tasks. I have ssh access to every server, all servers run under debian and all code in python. I was thiking about creating my own xmpp based solution(server sends messages to slave servers with commands to execute, like "update task", "run task"), or maybe some low-level ssh based solution where main server logs to slave servers and executes bash commands. But I would be happy to hear any advices.

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• object consisting of jQuery element

  - by Adam Kiss

  hello, current code I've built function to do something over collection of jQuery elements: var collection = $([]); //empty collection I add them with: collection = collection.add(e); and remove with: collection = collection.not(e); It's pretty straightforward solution, works nicely. problem Now, I would like to have an object consisting of various settings set to any jQuery element, i.e.: function addObject(e){ var o = { alpha: .6 //float base: {r: 255, g: 255, b: 255} //color object } e.data('settings', o); } But when I pass jQuery object/element to function (i.e. as e), calling e.data doesn't work, although it would be simplest and really nice solution. question If I have an "collection" of jQuery elements, what is the simplest way of storing some data for each element of set?

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• Put Raphael (SVG) canvas behind other divisions to make them clickable?

  - by Kerry

  I am using Raphael to create lines between divisions in an organization chart (or flow chart), but I need to be able to actually click on the divisions and content behind it. If I could make the canvas be behind the other elements, kind of like a background image, that would be idea. Is this possible? UPDATE: I found a solution. Raphael makes an SVG canvas that is absolutely positioned in my case. Absolute positions act as layers, and so to be on top of that layer, my content had to be absolutely positioned as well. If someone else has a better solution, I would be happy to hear it, though this is working fine.

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