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  • JOIN two tables to show already purchased items

    - by Norbert
    I have a table where I keep all my templates: templates template_id template_name template_price These templates can be purchased by a registered user and then are inserted in the payments table: payments payment_id template_id user_id Is there a way to join these two tables and get not just a list of templates that have been purchased by a certain user, but all the templates? And then figure out from there which ones have already been purchased? I used this SELECT, but only the ones that the user bought showed up. I would like to have all the rows from templates, but empty in case the user_id doesn't match. SELECT * FROM templates LEFT JOIN payments ON templates.template_id = payments.template_id WHERE user_id = 2 GROUP BY templates.template_id

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  • How to implement file transfer with Java sockets?

    - by ZeKoU
    Hello, I am working on a chat implementation with Java sockets. I have focused on few functionalities, like authentication, one person chat and a group chat. I was thinking about adding file transfer functionality, and I wonder what's the good practice about this. Should I have separate socket on the server with different port listening just for file transfers? Right now input and output streams that I get from server socket are binded to Scanner and PrintWriter objects respectively, so I find it hard to use that for file transfer. Any patterns you guys could recommend or give me good recommendations are very appreciated. Thanks, ZeKoU

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  • PyParsing: Is this correct use of setParseAction()?

    - by Rosarch
    I have strings like this: "MSE 2110, 3030, 4102" I would like to output: [("MSE", 2110), ("MSE", 3030), ("MSE", 4102)] This is my way of going about it, although I haven't quite gotten it yet: def makeCourseList(str, location, tokens): print "before: %s" % tokens for index, course_number in enumerate(tokens[1:]): tokens[index + 1] = (tokens[0][0], course_number) print "after: %s" % tokens course = Group(DEPT_CODE + COURSE_NUMBER) # .setResultsName("Course") course_data = (course + ZeroOrMore(Suppress(',') + COURSE_NUMBER)).setParseAction(makeCourseList) This outputs: >>> course.parseString("CS 2110") ([(['CS', 2110], {})], {}) >>> course_data.parseString("CS 2110, 4301, 2123, 1110") before: [['CS', 2110], 4301, 2123, 1110] after: [['CS', 2110], ('CS', 4301), ('CS', 2123), ('CS', 1110)] ([(['CS', 2110], {}), ('CS', 4301), ('CS', 2123), ('CS', 1110)], {}) Is this the right way to do it, or am I totally off? Also, the output of isn't quite correct - I want course_data to emit a list of course symbols that are in the same format as each other. Right now, the first course is different from the others. (It has a {}, whereas the others don't.)

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  • Disable IPV6 on specific NIC via PowerShell using a Com Object on Windows Server 2008 R2?

    - by user1256194
    I need to script some Windows Server 2008 R2 builds, preferably in PowerShell. I need to disable or uncheck IPV6 on a specific NIC (the same NIC every time). Currently, I have to set it manually. I do not want to disable IPV6 completely for the entire server other things may use that in the future. Is there an object I can reference in a PowerShell command specifying my NIC "Intel(R) PRO/1000 MT Network Connection" and disable IPV6? Unfortunately, Group Policy is not an option says the boss. I've tried finding an appropriate WMI object via "PowerShell Scriptomatic" but failed to find the difference between an enabled setting versus disabled on the Intel NIC. Thanks in advance.

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  • Presentation to under privileged students about what programming is. How? Any ideas.

    - by Quigrim
    Next week I have to give a presentation to a group of under privileged college students about the possibilities of a career in software development. These students have no exposure to programming what-so-ever. I have a good idea of how to tackle the non-technical, general portion of the presentation. However, notwithstanding my decade of experience, I am finding myself at somewhat of a loss how to convey the concept of programming in a meaningful way in under 20 minutes. Do I demonstrate actual simple code, or do I stick with concepts? I need to be able to scratch the surface of the vastness of the programming realm, to create just enough of a handle to those students, to peak the interest of those who might have the aptitude for it. Any ideas that are concise and clear would be greatly appreciated. Also, if anybody knows of online resources that addresses this topic, please share. Looking forward to some great input from this community. Thank you.

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  • Creating a video chat application for drupal site

    - by Dswabster
    I am trying to write an application for website powered by drupal, basically i would like to create an application only authenticated users are able to use, and users are only allowed to connect with members of the opposite group they are a member of. I have been learning flash builder 4 and learning the basics of actionscript but I am still pretty new to Flash and Flex development. I would like to users to connect using the Adobe Stratus 2 protocol and if possible by authentication on existing site and using membership data from existing mysql database. If anyone could give me a nudge in the right direction on how I should go about creating this application or the next steps i should take, it would be greatly appreciated.

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  • AudioRecord doesn't work for Motorola Milestone

    - by hcpl
    I'm having this problem only on Motorola Milestone. Code: // init recorder recordInstance = new AudioRecord(MediaRecorder.AudioSource.MIC, 8000, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT, 8000); recordInstance.startRecording(); //more code here recordInstance.stop(); The errorinformation I have (can't find more for the moment since I don't have a milestone myself for debugging): Uncaught handler: thread main exiting due to uncaught exception java.lang.IllegalStateException: stop() called on an uninitialized AudioRecord. at android.media.AudioRecord.stop(AudioRecord.java:51 6) Apparantly I'm not the only one with this problem. Some very similar threads I found (without solution): http://groups.google.com/group/android-developers/browse_thread/thread/6dd24aeb484b2e40 http://androidcommunity.com/forums/f2/problem-using-audiorecord-in-motorola-milestone-30935/ http://community.developer.motorola.com/t5/Android-App-Development-for/Problem-using-AudioRecord-on-Milestone-device/m-p/3889 http://www.fring.com/forums/showthread.php?t=16194

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  • javascript disabling a div or a link? (for a 5-star rating system)

    - by Cyprus106
    Basically, I've created a 5-star rating system. Pretty typical. It shows how many stars other people have given the item, and then when a user hovers over the stars, it lights up x number of stars based on how many they're over. It's all run by AJAX. They click 5 stars it automatically adds their 5-star rating to the group. The problem is that after they rate it I want to turn the system off, but I can't seem to be able to do that. I've tried everything I can think of. I've tried using element.disable for the a hrefs and for the div, but it still lets them vote away, over and over again, at least in firefox.... Can anyone help me out with a method to simply "freeze" the stars on what the user voted?? If I need to add code that's cool! I figured it probably wasn't necessary in this situation!

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  • Filter by virtual column?

    - by user329957
    I have the following database structure : [Order] OrderId Total [Payment] OrderId Amount Every Order can have X payment rows. I want to get only the list of orders where the sum of all the payments are < than the order Total. I have the following SQL but I will return all the orders paid and unpaid. SELECT o.OrderId, o.UserId, o.Total, o.DateCreated, COALESCE(SUM(p.Amount),0) AS Paid FROM [Order] o LEFT JOIN Payment p ON p.OrderId = o.OrderId GROUP BY o.OrderId, o.Total, o.UserId, o.DateCreated I have tried to add Where (Paid < o.Total) but it does not work, any idea? BTM I'm using SQL CE 3.5

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  • innerHTML of dynamically added element not updating in Chrome

    - by Sara Chipps
    I'm modifying a dynamically created input element by setting the innerHTML, when I view the element in the DOM Inspector I can see that the values I passed are in the input. However, I can't see it on the page? Is there a refresh() function that I should be calling after setting the value? I have tried innerText, and value and gotten the same results. Here is how I am setting it: $("input[name='group']")[0].innerHTML = groups; (as far as the JS set and the JQuery selector I have found chrome plugins to be fickle this way)

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  • Echoing a pseudo column value after a COUNT

    - by rob - not a robber
    Hi Gang... Please don't beat me if this is elementary. I searched and found disjointed stuff relating to pseudo columns. Nothing spot on about what I need. Anyway... I have a table with some rows. Each record has a unique ID, an ID that relates to another entity and finally a comment that relates to that last entity. So, I want to COUNT these rows to basically find what entity has the most comments. Instead of me explaining the query, I'll print it SELECT entity_id, COUNT(*) AS amount FROM comments GROUP BY entity_id ORDER BY amount DESC The query does just what I want, but I want to echo the values from that pseudo column, 'amount' Can it be done, or should I use another method like mysql_num_rows? Thank you!!!

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  • How to write a custom (odd) authentication plugins for Wordpress, Joomla and MediaWiki

    - by Bart van Heukelom
    On our network (a group of related websites - not a LAN) we have a common authentication system which works like this: On a network site ("consumer") the user clicks on a login link This redirects the user to a login page on our auth system ("RAS"). Upon successful login the user is directed back to the consumer site. Extra data is passed in the query string. This extra data does not include any information about the user yet. The consumer site's backend contacts RAS to get the information about the logged in user. So as you can see, the consumer site knows nothing about the authentication method. It doesn't know if it's by username/password, fingerprint, smartcard, or winning a game of poker. This is the main problem I'm encountering when trying to find out how I could write custom authentication plugins for these packages, acting as consumer sites: Wordpress Joomla MediaWiki For example Joomla offers a pretty simple auth plugin system, but it depends on a username/password entered on the Joomla site. Any hints on where to start?

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  • Mysql query - problem with order by

    - by Sergio
    I'm using two tables for selecting messages between users. Table "messages" for recording the messages and table "members" for checking users data (are they activ or deleted). This query working fine. What I need to do is list the received messsages order by last received. I tried to do with "ORDER BY messages.id DESC" at the end of this query but it didn't work. All messages are listed from first received. This is the mysql join table query that I'm using: sql = "select distinct messages.fromid, messages.readed, messages.fromid, messages.toid, members.id as pid From messages Inner Join members on members.id = messages.fromid Where messages.toid = ".$mid." AND members.status = 7 AND messages.kreaded !='1' AND messages.subject != 'readed' GROUP BY fromid" Is there any way to do this?

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  • How to change default font in netbeans platform?

    - by nathan
    I'd like to know how to change the default font used in netbeans platform. I'm not asking for changing the font in the Netbeans IDE but in the platform, then all my derived applications would use this default font. A netbeans application is a group of Jcomponent so i could easily set the font of each of those components but there is still things like notifications that i can't access directly to change the font, so i think the best would be to change the font by default. Programmaticaly or any other way... maybe editing one the jar?

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  • REGEX to extract word connected to nearest semicolon?

    - by John Kaybern
    I'm attempting to extract a series of data values from a text file. The values are in the format: <MODIFIER NAME1 VALUE; MODIFIER NAME2 VALUE;> For the purposes of the current task that I have, I only care about extracting the VALUE that is situated next to each semicolon. What would the REGEX command look like that would isolate each of these VALUES (preferably so that I backreference all values in the replacement part of my processing.) I believe that ^(.*?); is somehow used, but I'm not seeing how to isolate only the word that is attached to the semicolon in a group for backreference use. Thanks!

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  • How to force a WebPart to display in all pages of a portal?

    - by Mehdi
    Hi, I'm working on a portal/CMS project and (unfortunately) build the foundation on WebParts platform. However I need to provide an option for admin to choose whether a webpart should be display in all pages or not. Finally I've found a nice article from Damon Armstrong that describes a way to store all personalization data of a group of pages into one record. Thus every changes the admin made for a webpart, affect whole pages. But it doesn't seems to be a solution for me. May be it would be solved by writing a custom personalization provider, but I don't now how. Any Ideas about the problem? Thanks

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  • How do I obtain and use a CVSNT commit ID?

    - by skiphoppy
    I saw a reference on another question to a unique commit id auto-generated by CVSNT that marks each commit. I think most people in my department are using CVSNT or frontends to it. I found commit identifiers described in the CVSNT manual, but there is no explanation about how to determine what the CVSNT commit identifier is for a particular revision of a file. Is there a way to do this? I'd like to find out what commit identifiers are being generated for other people's checkins so I can group together the files involved in their commits.

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  • nHibernate Linq Projection

    - by Craig
    I am using the version 1.0 release of Linq for nHibernate. When I run the following linq statements I receive the error not a single-length projection: Surname I can find very few references to this on the web and looking into the source it says it should never occur! ClientID is a Int type and Surname is a string. When I comment out all the string fields in the projection and just leave ClientID it runs ok, but as soon as I add surname back it errors. var context = m_ClientRepository.Linq; var result = (from client in context from address in client.Addresses from contact in client.Contacts where client.Surname.StartsWith(surname) && client.GivenName.StartsWith(givenName) && contact.Value.StartsWith(phoneNumber) group client by new { client.ClientID, client.Surname, client.GivenName } into clientGroup select new ClientSearchDTO() { ClientID = clientGroup.Key.ClientID, Surname = clientGroup.Key.Surname, GivenName = clientGroup.Key.GivenName, Address = clientGroup.Max(x => x.Addresses.FirstOrDefault().Address), PhoneNumber = clientGroup.Max(x => x.Contacts.FirstOrDefault().Value) }) .Skip(Paging.FirstRecord(pageNumber)) .Take(5);

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  • Jquery binding event on selected class

    - by Andrew
    Is it achievable in jquery to bind an event to a group of control that has certain class? It seems to me, it can't. I google a bit and all that came up are nothing to do with events. Here's how my code looks - $('.numonly').bind('keypress',function(event){ if (event.which > 31 && (event.which < 48 || event.which > 57)) return false; });

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  • Need a Count, but Multiple other fields

    - by user3727752
    I have a table that looks like this: person trip_id date home destination joe 1 3/10 chicago new york joe 2 4/10 chicago l.a. joe 3 5/10 chicago boston luther 4 3/12 new york chicago luther 5 3/18 new york boston I want to get a result like person trips firstDate home joe 3 3/10 chicago luther 2 3/12 new york Currently I've got Select person, count(trip_id) as trips, min(date) as firstDate from [table] group by person order by firstDate I can't figure out how to get home in there as well. Home is always unique to the person. But my DBMS doesn't know that. Is there an easy way around this problem? Appreciate it.

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  • Java regex, need help with escape characters

    - by Blankman
    My HTML looks like: <td class="price" valign="top"><font color= "blue">&nbsp;&nbsp;$&nbsp; 5.93&nbsp;</font></td> I tried: String result = ""; Pattern p = Pattern.compile("\"blue\">&nbsp;&nbsp;$&nbsp;(.*)&nbsp;</font></td>"); Matcher m = p.matcher(text); if(m.find()) result = m.group(1).trim(); Doesn't seem to be matching. Am I missing an escape character?

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  • Rails/mysql SUM distinct records - optimization

    - by pepernik
    Hey. How would you optimize this SQL SELECT SUM(tmp.cost) FROM ( SELECT DISTINCT clients.id as client, countries.credits_cost AS cost FROM countries INNER JOIN clients ON clients.country_id = countries.id INNER JOIN clients_groups ON clients_groups.client_id=clients.id WHERE clients_groups.group_id IN (1,2,3,4,5,6,7,8,9) GROUP BY clients.id ) AS tmp; I'm using this example as part of my Ruby on Rails project. Note that my nested SQL (tmp) can have more then 10 milion records. You can split that in more SQLs if the performance is better. Should I add any indexes to make it quicker (i have it on IDs)?

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  • Why is there no .NET Community Process?

    - by michielvoo
    I was doing some research into general topics of software engineering and I came across the Java Community Process website: The JCP is the mechanism for developing standard technical specifications for Java technology. Anyone can register for the site and participate in reviewing and providing feedback for the Java Specification Requests (JSRs), and anyone can sign up to become a JCP Member and then participate on the Expert Group of a JSR or even submit their own JSR Proposal. Seems like a good idea to me, and there are lots of very well written specifications and reference implementations on the JCP website. So why is there no .NET Community Process? Is that something that Microsoft could or should start? Maybe they could install it on Codeplex.net and hand over the keys to the community.

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  • Algorithm design: can you provide a solution to the multiple knapsack problem?

    - by MalcomTucker
    I am looking for a pseudo-code solution to what is effectively the Multiple Knapsack Problem (optimisation statement is halfway down the page). I think this problem is NP Complete so the solution doesn't need to be optimal, rather if it is fairly efficient and easily implemented that would be good. The problem is this: I have many work items, with each taking a different (but fixed and known) amount of time to complete. I need to divide these work items into groups so as to have the smallest number of groups (ideally), with each group of work items taking no longer than a given total threshold - say 1 hour. I am flexible about the threshold - it doesnt need to be rigidly applied, though should be close. My idea was to allocate work items into bins where each bin represents 90% of the threshold, 80%, 70% and so on. I could then match items that take 90% to those that take 10%, and so on. Any better ideas?

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  • c++11 atomic ordering: extended total order memory_order_seq_cst for locks

    - by itaj
    There's this note in c++11 29.3-p3: [ Note: Although it is not explicitly required that S include locks, it can always be extended to an order that does include lock and unlock operations, since the ordering between those is already included in the "happens before" ordering. - end note ] What does it mean by "always"? I can understand that any certain implementation can be designed to support such an extended S. But in some general implementation that wasn't designed for it, I don't see that S can be extended so. I had sent this question to comp.std.c++ but got no answers there. http://groups.google.com/group/comp.std.c++/browse_frm/thread/5242fa70d0594d1b#

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