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• How can I put rows of MySQL data under the appropriate titles using PHP?

  - by sfarbota

  I have the following MySQL table structure: num field company phone website 1 Gas abcd 123456789 abcd.com 2 Water efgh 987654321 efgh.com 3 Water ijkl 321654987 ijkl.com 4 Heat mnop 987654321 mnop.com 5 Gas qrst 123789654 qrst.com ... Is it possible with PHP (maybe using some mixture of GROUP_BY and ORDER_BY) to echo the data to the screen in the following format: Gas: abcd qrst 123456789 123789654 abcd.com qrst.com Water: efgh ijkl 987654321 321654987 efgh.com ijkl.com Heat: mnop 321654987 mnop.com The exact format of it isn't important. I just need for the different rows of data to be listed under the appropriate field with none of the fields repeated. I've been trying to figure this out for a while now, but I'm new to PHP and I can't seem to figure out how to do this, if it's even possible, or if there's a better way to organize my data to make it easier.

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• Best Image Replacement Technique

  - by Josh Stodola

  What is the best (as in cross-browser) technique to do image replacement in CSS? I am using sprites to do my navigation, but I want the markup to remain SEO friendly. Given the following HTML structure... <div id="menu"> <ul> <li><a href="#">Test</a></li> <li><a href="#">Tester</a></li> <li><a href="#">Testing Testing</a></li> </ul> </div> What is the best way to replace the text with a background image using CSS only? I am currently using this... text-indent: -9999px; But, it fails with CSS on, and images off.

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• openssl ssl encryption

  - by deddihp

  Hello, I want to discuss about openssl write and read method. Assume I have an data structure like below: /-----------------------------------------------------\ | my_header | PAYLOAD | \-----------------------------------------------------/ | | \ / \ / not encrypted encrypted I think the proper algorithm would be like this : SEND: build my_header with my own header. encrypt PAYLOAD with encryption function attach my_header and PAYLOAD (encrypted) to one buffer send it using common POSIX function just like send or sendto RECV: using common POSIX function just like recv or recvfrom. extract my_header and PAYLOAD(encrypted) decrypt PAYLOAD with decryption function at last i got my_header and PAYLOAD(decrypted). How is your approach if you face a problem like above. Since openssl encrypt all of data that is sent to SSL_write function (CMIIW). Thanks

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• how to send JSON data with server error response code 500

  - by kapil.israni

  I wanted to know if theres a way to send a JSON data along with HTTP response code 500. Basically I want my rest client to know that there is some error on the backend and along with it send a JSON error data structure like this. {"error" : [ {"code": "1001", "desc": "Some error description"}, {"code": "1002", "desc": "Some other error description"} ] } This is using the following java stack = Java 6/JAX-RS/Jersey/Tomcat If not, then is there a way to send a custom response code along with JSON data. Basically looking from JAX-RS API it looks that you can only send JSON data along with 200 OK?? Any thoughts?? I am guessing RESTEasy would be the same, right??

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• C#: access a class property when the property identifier is known as a string

  - by Hans

  Hi, I'm using LINQ to Entities on a database which structure is not known in advance. I use reflection to retrieve the information, and now have a list of strings with all the table names. Because I use LINQ, I also have the datasource encapsulated in a C# class (linqContext), with each table being a property of that class. What I want to achieve is this: Assume one of the strings in the table names list is "Employees". This is known in code, I want to do the following: linqContext.Employees.DoSomethingHere(); Is this possible? I know that if all the propertie were just items in a list, I could use the string as indexer, linqContext["Employees"]. However, this is not the case :(

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• Artifical neural networks height-weight problem

  - by hammid1981

  i plan to use neurodotnet for my phd thesis, but before that i just want to build some small solutions to get used to the dll structure. the first problem that i want to model using backward propagation is height-weight ratio. I have some height and weight data, i want to train my NN so that if i put in some weight then i should get correct height as a output. i have 1 input 1 hidden and 1 output layer. Now here is first of many things i cant get around :) 1. my height data is in form of 1.422, 1.5422 ... etc and the corresponding weight data is 90 95, but the NN takes the input as 0/1 or -1/1 and given the output in the same range. how to address this problem

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• Easiest way to find the correct kademlia bucket

  - by Martin

  In the Kademlia protocol node IDs are 160 bit numbers. Nodes are stored in buckets, bucket 0 stores all the nodes which have the same ID as this node except for the very last bit, bucket 1 stores all the nodes which have the same ID as this node except for the last 2 bits, and so on for all 160 buckets. What's the fastest way to find which bucket I should put a new node into? I have my buckets simply stored in an array, and need a method like so: Bucket[] buckets; //array with 160 items public Bucket GetBucket(Int160 myId, Int160 otherId) { //some stuff goes here } The obvious approach is to work down from the most significant bit, comparing bit by bit until I find a difference, I'm hoping there is a better approach based around clever bit twiddling. Practical note: My Int160 is stored in a byte array with 20 items, solutions which work well with that kind of structure will be preferred.

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• How do I delete a file from depot, but leave local copy in tact?

  - by Gary

  I'm trying to learn Perforce and want to delete a file from the depot(easy to do with p4 delete, p4 submit), but that deletes it from the client machine dir structure as well. I want to keep my local file in my directory intact. The only way I can see to do this would be to move it out of the hierarchy that is under Perforce control before deleting. I was able to get my file back by syncing an earlier version. Maybe I set up my client workspace wrong? Or am I misunderstanding a fundamental concept of source control? The client workspace is /home/user and I did it this way so I could add any file under my home directory without getting an error about the file not being under client's root. FYI - Linux client and server running P4D/LINUX26X86/2009.1/222893 (2009/11/12) Any advice appreciated. Thanks.

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• Resources for how to design graph/charts well

  - by wesgarrison

  One of my projects needs to show users where they rank in certain calculations. I inherited the graph structure from the previous programmer and had to leave it alone while I worked on other parts of the site. It's time to make the graphs more meaningful, so I'm looking for books/websites/etc about graphs. (Not graph theory!) Charts that convey comparisons at a glance. Everyone suggests The Visual Display of Quantitative Information by Edward Tufte and that's spot on for what I'm looking for, so anything related to that would be great. Naturally, personal experience about what to do or not would be helpful as well.

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• How to parse an XML file using PHP?

  - by Jack

  Here I have a variable 'response' which is obtained by parsing an XML file. $url = 'http://xxxxx.xml'; $ch = curl_init($url); $response = curl_exec($ch); The url structure is as follows - <user> <id>734</id> <name>Peter Parker</name> - <status> <favorited>false</favorited> </status> </user> How to access each bit of info like id,name,favorited from response?

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• WindowsForms difference to simple Console App

  - by daemonfire300

  I currently started to "port" my console projects to WinForms, but it seems I am badly failing doing that. I am simply used to a console structure: I got my classes interacting with each other depending on the input coming from the console. A simple flow: Input -> ProcessInput -> Execute -> Output -> wait for input Now I got this big Form1.cs (etc.) and the "Application.Run(Form1);" But I really got no clue how my classes can interact with the form and create a flow like I described above. I mean, I just have these "...._Click(object sender....)" for each "item" inside the form. Now I do not know where to place / start my flow / loop, and how my classes can interact with the form.

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• How default assignment operator works in struct?

  - by skydoor

  Suppose I have a structure in C++ containing a name and a number, e.g. struct person { char name[20]; int ssn; }; Suppose I declare two person variables: person a; person b; where a.name = "George", a.ssn = 1, and b.name = "Fred" and b.ssn = 2. Suppose later in the code a = b; printf("%s %d\n",a.name, a.ssn);

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• Graph visualization code in javascript?

  - by Chris Farmer

  Hi. I have a data structure that represents a directed graph, and I want to render that dynamically on an HTML page. Does anyone know of any javascript code that can do a reasonable job with graph layout? These graphs will usually be just a few nodes, maybe ten at the very upper end, so my guess is that performance isn't going to be a big deal. Ideally, I'd like to be able to hook it in with jQuery so that users can tweak the layout manually by dragging the nodes around. Edit: Google's Visualization API seems to be more "graphs as charts" oriented than "graphs as nodes" oriented. I didn't see any node-oriented visualizations already built there, anyway. Do you know that one exists?

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• How to make linq master detail query for 0..n relationship?

  - by JK

  Given a classic DB structure of Orders has zero or more OrderLines and OrderLine has exactly one Product, how do I write a linq query to express this? The output would be OrderNumber - OrderLine - Product Name Order-1 null null // (this order has no lines) Order-2 1 Red widget I tried this query but is not getting the orders with no lines var model = (from po in Orders from line in po.OrderLines select new { OrderNumber = po.Id, OrderLine = line.LineNumber, ProductName = line.Product.ProductDescription, } ) I think that the 2nd from is limiting the query to only those that have OrderLines, but I dont know another way to express it. LINQ is very non-obvious if you ask me!

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• Licensing your code in Mono

  - by Jerry

  I'm working with some code in Visual Studio. My parter-in-crime fellow developer has suggested that the code also be available to work under Mono. I'm impresed witht he work that is already done in Mono, but I'm very new to Mono, so I don't know what it can/cannot do. I've already written a class in C# using the .NET LicenseManager object. It writes to the windows registry, so I know I'll have to modify it so that it will use some compiler flags like #if Win32 or #if MONO. My question is two-fold: 1) Does Mono implement the same LicenseManager class structure? 2) If so, how do you guys lock down your code using LicenseManager in Linux? (i.e. Write to files, use a hardware dongle, compare to hardware serials, etc??)

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• Error when trying to use PDO object

  - by Nate

  EDIT: I'm going to put my code in here due to comments below. So sit tight for a few minutes ;-) Thanks! I'm an inexperienced php programmer and only found out about PDO a few days ago. I'm now trying to port my website code over to using PDO, but I am getting an error when I try to use the PDO object that I create. I'm using a CMS on my website, and it makes building page output kind of complicated, but I've tried to draw the structure of what is being called below: index.php -class myClass defined --method myFunction defined (it gets called on pageload & returns the page output) ---include file1.php ----require_once('mysql_connect.php') (creates pdo object) ----*I can use the pdo object here successfully* ----require_once('file2.php') -----require_once('mysql_connect.php') -----function myFunction2 defined ------*trying to use the pdo object here results in the error* The error I'm getting is: Fatal error: Call to a member function prepare() on a non-object in /home/rgcpanel/public_html/account/account_functions.php on line 147 Any idea what's going on?

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• Sample source code for processing messages of a window created by an external program?

  - by David

  I know I have to use SetWindowLongPtr with GWLP_WNDPROC and create my own WndProc that handles the message I want (such as WM_GETMINMAXINFO and modify the MINMAXINFO structure). However, because I want to do this for a window created by another program (like notepad.exe), I can't do this from my C#/WinForms program, I have to create a native C/C++ DLL that I have to inject in the the process that created the window. Can you provide a link or the sample code to do this (the native C++ DLL and the way to call it from C# and inject it into the external process)? Thank you

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• Do minidump files contain the timestamp of the crash?

  - by Roger Lipscombe

  The MiscInfoStream in a minidump file contains the process create time. I'd like to find out how long the process has been running for before the crash. Does a minidump file contain the exception timestamp anywhere? WinDbg on this dump file displays the following, which implies that it's in there somewhere... Debug session time: Tue Dec 29 15:49:20.000 2009 (GMT+0) System Uptime: not available Process Uptime: 0 days 0:33:03.000 Note that today's Mar 15, so this is almost certainly the timestamp of the crash. I'd like a programmatic way to retrieve that value and the "Process Uptime" value. I found the MINIDUMP_MISC_INFO_3 structure, which contains some timezone information, but it doesn't seem to contain the exception time.

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• yiic webapp problem

  - by bgreen1989

  hi, i'm still new to yii framework. so, i want to try running yiic so that i could see the structure of the files created. but, i could not run it in console. Does anyone have a solution? thanks. I'm using wamp on win xp. i go to the directory of the yiic framework its in D:\wamp\www\framework\ and run yiic and any other variations per Larry Ullman's blog. but still got: "..." is not a recognizable internal/ external command... How should i be able to run yiic? thanks.

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• gwt compiling error

  - by Hoax

  Compiling module com.sem.Sem10 Finding entry point classes [ERROR] Unable to find type 'com.sem.client.Sem10' [ERROR] Hint: Previous compiler errors may have made this type unavailable [ERROR] Hint: Check the inheritance chain from your module; it may not be inheriting a required module or a module may not be adding its source path entries properly My package structure is com.sem com.sem.client com.sem.schema com.sem.server inherits name='com.google.gwt.user.User' inherits name='com.google.gwt.user.theme.standard.Standard' inherits name='com.google.gwt.maps.GoogleMaps' script src="http://maps.google.com/maps?gwt=1&file=api&amp.... entry-point class='com.sem.client.Sem10' source path='com.sem.schema' I have googled this thing for quite a while and could not find a solution...? any help appreciated

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• Eclipse antRunner command line build has wrong dependency build order

  - by Sam Jones

  My team's Eclipse RCP app builds fine from the Eclipse IDE. When I try to build it from the command line, using the antRunner application, it builds the plugins out of order -- a plugin builds before it's dependencies are built, and so can't resolve some of the needed classes. Where should I look to fix this? As far as I can tell, the dependencies are set up correctly (a feature that depends on a plugin that depends on another plugin). I have my build.properties and folder structure set up as specified here. Is there anything else I should look at?

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• Does XercesC contain an extensive logic of XMLSchema validation?

  - by seas

  Tried to implement a small XML validation tool with XercesC. For some reason I cannot use existing validators right from the box - I need some preprocessing and would like to combine it with validation in a single tool. I used DOM parser and specified DOMErrorHandler. Instead of a set of errors with detailed messages like I saw from xmllint for the same xml and xmlschema files, only one message appeared that document has a wrong structure without details. Probably, I did something wrong. But also assume XercesC doesn't contain xmllint functionality right from the box. Does anybody can give me a hint before I spent too much time? Thanks.

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• Some basic COM question...

  - by smwikipedia

  I have just finished my first COM server DLL. And it runs smoothly. So I'd like to show my understanding for now and hear your critics. 1- How COM simply works? COM - "The Call Chain" COM Lib methods - Traditional DLL exports - Classes encapsulated in the COM DLL 2- With C++, the benefits like "interface" in OOP can only be taken advantage of at the source level. With COM, these benefits can be used at a binary level. 3- Some illustration about interface &pInterface ------- pInterface ---------- Interface----------------- methods Ixx ** Ixx * (method table) (void **) A Interface is a data structure in memory. It's nothing but a memory area containg a method table. Is my understanding alright? Thanks for your revision.

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• How to do relative imports in Python?

  - by Joril

  Imagine this directory structure: app/ __init__.py sub1/ __init__.py mod1.py sub2/ __init__.py mod2.py I'm coding mod1, and I need to import something from mod2. How should I do it? I tried from ..sub2 import mod2 but I'm getting an "Attempted relative import in non-package". I googled around but found only "sys.path manipulation" hacks. Isn't there a clean way? Edit: all my __init__.py's are currently empty Edit2: I'm trying to do this because sub2 contains classes that are shared across sub packages (sub1, subX, etc.). Edit3: The behaviour I'm looking for is the same as described in PEP 366 (thanks John B)

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• CakePHP Bake association problem

  - by Apu

  I have only two tables in my database with a one-to-many relationship between them (user hasMany messages) and am trying to get basic CRUD functionality going. Bake detects the associations correctly and specifies them correctly inside the model classes, but in controllers and views it looks like Cake doesn't know anything about those associations -- I don't even get a select tag for user_id when I go add a new message. Has anyone come across this problem before? What can I be doing wrong? Table structure appears to be fine: CREATE TABLE users ( id int(11) NOT NULL AUTO_INCREMENT, username varchar(255) NOT NULL, `password` varchar(255) NOT NULL, email varchar(255) NOT NULL, created datetime NOT NULL, modified datetime NOT NULL, PRIMARY KEY (id) ) ENGINE=MyISAM DEFAULT CHARSET=utf8; CREATE TABLE IF NOT EXISTS `messages` ( `id` int(11) NOT NULL AUTO_INCREMENT, `user_id` int(11) NOT NULL, `content` varchar(255) NOT NULL, `created` datetime NOT NULL, `modified` datetime NOT NULL, PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=1 ;

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