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• Best way to install multiple versions of Apache, PHP and MySQL on a single FreeBSD host

  - by Mikael Roos

  I want a test- and development-environment for web using Apache, PHP and MySQL. I need to be able to test a single web-application with multiple versions of PHP (5.2, 5.3, etc) and multiple versions of MySQL (5.0, 5.1, 5.5, etc). It shall be hosted on a FreeBSD server. My idea is to compile each version into a directory structure and running them on separate portnumbers. For example: opt/apache2.2-php5.2-mysql-5.0 (httpd on port 8801, mysql on port 8802) (directory contains each software, compiled and linked towards eachother) opt/apache2.2-php5.3-mysql-5.1 (httpd on port 8803, mysql on port 8804) (and so on) Any thoughts or suggestions of the best way to setup this type of environment?

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• Mixing static and dynamic endpoints in app.yaml file

  - by Greg

  I'm trying to describe endpoints in my App Engine app and am having difficulty for directory structures that mix static and dynamic content. But my yaml rules are conflicting with one another. Before I change my directory structure, does anyone have a recommendation? The goal is to create a directory that contains both documentation (static html files) and implementations. /api - /v1 - getitdone.py - doc.html - index.html What I think I should be doing with my application yaml... - url: /api/v1/getitdone script: api/v1/getitdone.py - url: /api/ static_files: api/index.html upload: api/index.html - url: /api static_dir: api But this causes the dynamic endpoints to fail. I'm assuming the static_dir reference is breaking it. How can I do this without describing every script and static file reference (I have many more than are listed here)?

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• importing same module more than once

  - by wallacoloo

  So after a few hours, I discovered the cause of a bug in my application. My app's source is structure like: main/ __init__.py folderA/ __init__.py fileA.py fileB.py Really, there are about 50 more files. But that's not the point. In main/__init__.py, I have this code: from folderA.fileA import * in folderA/__init__.py I have this code: sys.path.append(pathToFolderA) in folderA/fileB.py I have this code: from fileA import * The problem is that fileA gets imported twice. However, I only want to import it once. The obvious way to fix this (to me atleast) is to change certain paths from path to folderA.path But I feel like Python should not even have this error in the first place. What other workarounds are there that don't require each file to know it's absolute location?

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• using check contraint in MySQL for controlling string length not working

  - by ptrn

  Dear stackoverflow, I'm tumbled with a problem! I've set up my first check constraint using MySQL, but unfortunately I'm having a problem. When inserting a row that should fail the test, the row is inserted anyway. The structure: CREATE TABLE user ( id INT UNSIGNED NOT NULL AUTO_INCREMENT, uname VARCHAR(10) NOT NULL, fname VARCHAR(50) NOT NULL, lname VARCHAR(50) NOT NULL, mail VARCHAR(50) NOT NULL, PRIMARY KEY (id), CHECK (LENGTH(fname) > 3) ); The insert statement: INSERT INTO user VALUES (null, 'user', 'Fname', 'Lname', '[email protected]'); I'm pretty sure I'm missing something basic here.

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• Appending Dataset in Core Data execution of Update through iTuneStore

  - by Yoon Lee

  So I have completed my code work. This is first time releasing the app through iTuneStore. Current state of reading Core Data (.sqlite) file is already prefetched (already has information like apple's 'Reciepie' program). Assuming I have successfully released through apple store, and decide to update my application to existing users. Say I have sqlite contents but it contains bit more information than previous SQLite file under same structure. Question 1. Every time update held to the existing user, does it removes previous ones and move new updated application? Question 2. if it is not, then HOW can I append the existing sql value?

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• JSF - 2 a4j:actionParam in one commandlink bug

  - by Yurish

  Hi! I have such structure in my jsp: <h:commandLink action=#{docbean.save}> <a4j:actionParam value="bill_all" assignTo="#{billdoc.billType}"/> <a4j:actionParam value="bill_document" assignTo="#{docbean.doctype}"/> </h:commandLink> While debugging i saw, that billdoc.billtype and docbean.doctype have the same values: "bill_document". Is it bug? If not, then how can i put value to my managed-bean?

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• Multipart question: Mapping between xml and Json using xpath

  - by scope-creep

  This is a JSON mapping question from a json newbie. Currently i'm reading xml using xpath in C#, and the xpath are returning either the element or attribute node values, as is the schema's want. I want to write out some of the returned values into a json formatted file. I know i can faneigle the xpath expression to return the element or attribute names, so I can built the appropriate name/value json structure before serialization, but I was I'm wondering if their was some way of doing a mapping between the xml and json. The xml schema is fairly big, so potentially the mapping will be big, meaning a ton of cumbersom coding to make it work. Is their any way to automap somehow? I was planning to use json.net, which seems flexible enough, although their may be a better approach. Any help would be appreciated. Bob.

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• .net 4.0 concurrent queue dictionary

  - by freddy smith

  I would like to use the new concurrent collections in .NET 4.0 to solve the following problem. The basic data structure I want to have is a producer consumer queue, there will be a single consumer and multiple producers. There are items of type A,B,C,D,E that will be added to this queue. Items of type A,B,C are added to the queue in the normal manner and processed in order. However items of type D or E can only exist in the queue zero or once. If one of these is to be added and there already exists another of the same type that has not yet been processed then this should update that other one in-place in the queue. The queue position would not change (i.e. would not go to the back of the queue) after the update. Which .NET 4.0 classes would be best for this?

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• When do you learn from your mistakes?

  - by smayers81

  When are you supposed to learn from your mistakes in coding / design? Is it something you take with you to the next project or do you learn in the middle of your current one, sacrificing consistency for cleaner, more well-informed code? For example, my application can be distinctly demarcated down two lines of business -- say one side is for sales and the other is for marketing. Both are somewhat tied together, but as far as the team structure, use cases, developers, etc. the app consists of the Sales code and the Marketing Code. Now, say the Sales code went in first and while good-intentioned, made some bad mistakes. Should the Marketing Code follow suit and make the same mistakes for the sake of consistency or should Marketing architects and designers instead learn from the mistakes that Sales made and developer a cleaner codebase, even though Sales and Marketing are in the exact same system? Basically, do you learn from your mistakes while in a project or do you continue to pile crap on top of crap?

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• Self documenting REST interface

  - by KandadaBoggu

  I have a Rails based server running several REST services and a Rails based web UI that interacts with the server using ActiveResource. Same server is being used by other clients( e.g: mobile). I have to generate documentation for the REST interface. I need to provide service URL, input/output and error document structure for each service. Ideally, I would like to use an interceptor at the server side that will document the service based on the existing traffic. I am wondering if there is a gem to do this.

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• Good reasons to migrate PHP libraries to namespaces

  - by Joseph Mastey

  I have a significant number of object libraries written for PHP 5.2.5, and I'm trying to weigh the benefits of retrofitting them for namespaces. I don't have any concerns about the server PHP version at the moment, since any relevant machines are under my control, so I'm not worried about backwards compatibility. As far as the structure of the libraries, I use the same convention as Zend Framework, (Library_Module_Class_Name e.g.) so I don't currently have any naming conflicts internal to the libraries. I'd anticipate moving the Library and Module parts of those classnames to namespaces. That said, if the code is already written, is there any good reason to move over to namespaces? Thanks, Joe

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• printing sequence number of a sniffed packet

  - by scatman

  i am using pcap to create a packet sniffer. i have this tcp structure: typedef struct TSP_header{ unsigned short int sport; unsigned short int dport; unsigned int seqnum; unsigned int acknum; unsigned char reserved:4, offset:4; unsigned int tcp_res1:4, //little-endian tcph_hlen:4, //length of tcp header in 32-bit words tcph_fin:1, //Finish flag "fin" tcph_syn:1, //Synchronize sequence numbers to start a connection tcph_rst:1, //Reset flag tcph_psh:1, //Push, sends data to the application tcph_ack:1, //acknowledge tcph_urg:1, //urgent pointer tcph_res2:2; unsigned short int tcph_win; unsigned short int tcph_chksum; unsigned short int tcph_urgptr; }TSP_header; how can i print the sequence number? shou i use htons(sequence_number)?? coz it isn't working this way!!

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• problem with asf writer

  - by hatham

  Im trying to encode raw data(both video frame and audio sample) into .asf file, using asf writer filter in directshow. my filter graph structure: raw_send_filter - asf writer filter raw_send_filter implements CBaseFilter and CBaseOutputPin. It plays a role as source filter which get raw data, then deliver them to ASF writer filter. The process follows these steps: Get deliver buffer (return into "sample") , using the function CBaseOutputPin::GetDeliveryBuffer sample-GetPointer(&buffer); Set time stamp (with frame rate = 30 fps) deliver sample The problem is after encode some raw data, I can not deliver any more. I can encode .avi file with this way, using Avi mux filter. Can u tell me why I can not deliver samples after encoding some? Thanks.

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• Key/Value pyqt QComboBox

  - by Danilo

  I want to use a QComboBox with the "keys" and "values" from a tuple similar to the ones used in a django models. For example I have the following structure for a person's sex. SEX_CHOICES = (('M', 'Male'), ('F', 'Female')) The first item of the tuple contains the code of the sex that is stored in the database, and the second one the text that I want to display in the QComboBox as an item. Is there a way in wich I could set the QComboBox value as M and it displays Male. An also when the user select the element Male I could get the selected value as M. Thanks

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• Creating XSD Dynamically in C Sharp

  - by Nave

  I have two inputs. I get as input one XML file. I have to create an XSD file for this XML file. This XML file has tags which depend on another input. But that XML file should have certain tags for sure. For example, the XML file has the following structure : <A <B <C...</C <D...</D <E <F...</F <G...</G </E </B </A Here, in this XML file, A,B and E tags should be present compulsarily. But the tags C and D inside the B tag and tags F and G inside the E tag depends on another input. So I shoud create an XSD dynamically(i know that A,B and E tags should be present and I do know about the other tags from the other input) and validate the input XML file against the XML Schema. Can someone temme how I can do this in C Sharp?

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• Creating XSD Dynamically in C Sharp

  - by Nave

  I have two inputs. I get as input one XML file. I have to create an XSD file for this XML file. This XML file has tags which depend on another input. But that XML file should have certain tags for sure. For example, the XML file has the following structure : <A <B <C...</C <D...</D <E <F...</F <G...</G </E </B </A Here, in this XML file, A,B and E tags should be present compulsarily. But the tags C and D inside the B tag and tags F and G inside the E tag depends on another input. So I shoud create an XSD dynamically(i know that A,B and E tags should be present and I do know about the other tags from the other input) and validate the input XML file against the XML Schema. Can someone temme how I can do this in C Sharp?

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• Convert data retrieved from MySQL database into JSON object using Python/Django

  - by rohanbk

  I have a MySQL database called People which contains the following schema <id,name,foodchoice1,foodchoice2>. The database contains a list of people and the two choices of food they wish to have at a party (for example). I want to create some kind of Python web-service that will output a JSON object. An example of output should be like: { "guestlist": [ {"id":1,"name":"Bob","choice1":"chicken","choice2":"pasta"},{"id":2,"name":"Alice","choice1":"pasta","choice2":"chicken"} ], "partyname": "My awesome party", "day": "1", "month": "June", "2010": "null" } Basically every guest is stored into a dictionary 'guestlist' along with their choices of food. At the end of the JSON object is just some additional information that only needs to be mentioned once. The question that I have is regarding the method that I need to utilize to grab the data from my database, and create the JSON object. Do I need to use a standard Model/View structure of Django or can I get away with something that is much simpler since what I need to do is really simple?

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• break dataframe into subsets by factor values, send to function that returns glm class, how to recom

  - by Alex Holcombe

  Thanks to Hadley's plyr package ddply function we can take a dataframe, break it down into subdataframes by factors, send each to a function, and then combine the function results for each subdataframe into a new dataframe. But what if the function returns an object of a class like glm or in my case, a c("glm", "lm"). Then, these can't be combined into a dataframe can they? I get this error instead Error in as.data.frame.default(x[[i]], optional = TRUE, stringsAsFactors = stringsAsFactors) : cannot coerce class 'c("glm", "lm")' into a data.frame Is there some more flexible data structure that will accommodate all the complex glm class results of my function calls, preserving the information regarding the dataframe subsets? Or should this be done in an entirely different way?

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• how to retrieve inserted checkbox values in checkbox on asp.net page load ?

  - by user522211

  i have 5 checkboxes in webform and textbox1... when i search the record using the date specified in textbox1 when i enter 11-Dec-2010 in Textbox1 and click on submit button then checkbox1, checkbox2, and checkbox3 will be disabled and unchecked ..... and after tat when i type 13-Dec-2010 in Textbox1 and click on submit button then checkbox1, checkbox4, and checkbox5 will be disabled and unchecked .....and all the checkbox of 11-Dec-2010 will be enabled for 13-Dec-2010 I M CURRENTLY WORKING IN ASP.NET (VB) My Datbase structure : ID Name Seats Date 1 Sumit 1,2,3 11-Dec-2010 2 Mili 1,4,5 13-Dec-2010 Example of this is that site have a look to know more : what i want : http://www.redbus.in/Booking/SeatSelection.aspx?rt=4034093&doj=28-Feb-2011&dep=05:00%20PM&showSpInst=false

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• How do I correctly model data in SQL-based databases that have some columns in common, but also have

  - by Brandon Weiss

  For instance, let's say I have a User model. Users have things like logins, passwords, e-mail addresses, avatars, etc. But there are two types of Users that will be using this site, let's say Parents and Businesses. I need to store some different information for the Parents (e.g. childrens' names, domestic partner, salaries, etc.) than for the Businesses (e.g. industry, number of employees, etc.), but also some of it is the same, like logins and passwords. How do I correctly structure this in a SQL-based database? Thanks!

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• Union on two tables with a where clause in the one

  - by Lostdrifter

  Currently I have 2 tables, both of the tables have the same structure and are going to be used in a web application. the two tables are production and temp. The temp table contains one additional column called [signed up]. Currently I generate a single list using two columns that are found in each table (recno and name). Using these two fields I'm able to support my web application search function. Now what I need to do is support limiting the amount of items that can be used in the search on the second table. the reason for this is become once a person is "signed up" a similar record is created in the production table and will have its own recno. doing: Select recno, name from production UNION ALL Select recno, name from temp ...will show me everyone. I have tried: Select recno, name from production UNION ALL Select recno, name from temp WHERE signup <> 'Y' But this returns nothing? Can anyone help?

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• Very simple, terse and easy GUI programming “frameworks”

  - by jetxee

  Please list GUI programming libraries, toolkits, frameworks which allow to write GUI apps quickly. I mean in such a way, that GUI is described entirely in a human-readable (and human-writable) plain text file (code) code is terse (1 or 2 lines of code per widget/event pair), suitable for scripting structure and operation of the GUI is evident from the code (nesting of widgets and flow of events) details about how to build the GUI are hidden (things like mainloop, attaching event listeners, etc.) auto-layouts are supported (vboxes, hboxes, etc.) As answers suggest, this may be defined as declarative GUI programming, but it is not necessarily such. Any approach is OK if it works, is easy to use and terse. There are some GUI libraries/toolkits like this. They are listed below. Please extend the list if you see a qualifying toolkit missing. Indicate if the project is crossplatform, mature, active, and give an example if possible. Please use this wiki to discuss only Open Source projects. This is the list so far (in alphabetical order): Fudgets Fudgets is a Haskell library. Platform: Unix. Status: Experimental, but still maintained. An example: import Fudgets main = fudlogue (shellF "Hello" (labelF "Hello, world!" >+< quitButtonF)) GNUstep Renaissance Renaissance allows to describe GUI in simple XML. Platforms: OSX/GNUstep. Status: part of GNUstep. An example below: <window title="Example"> <vbox> <label font="big"> Click the button below to quit the application </label> <button title="Quit" action="terminate:"/> </vbox> </window> HTML HTML-based GUI (HTML + JS). Crossplatform, mature. Can be used entirely on the client side. Looking for a nice “helloworld” example. JavaFX JavaFX is usable for standalone (desktop) apps as well as for web applications. Not completely crossplatform, not yet completely open source. Status: 1.0 release. An example: Frame { content: Button { text: "Press Me" action: operation() { System.out.println("You pressed me"); } } visible: true } Screenshot is needed. Phooey Phooey is another Haskell library. Crossplatform (wxWidgets), HTML+JS backend planned. Mature and active. An example (a little more than a helloworld): ui1 :: UI () ui1 = title "Shopping List" $ do a <- title "apples" $ islider (0,10) 3 b <- title "bananas" $ islider (0,10) 7 title "total" $ showDisplay (liftA2 (+) a b) PythonCard PythonCard describes GUI in a Python dictionary. Crossplatform (wxWidgets). Some apps use it, but the project seems stalled. There is an active fork. I skip PythonCard example because it is too verbose for the contest. Shoes Shoes for Ruby. Platforms: Win/OSX/GTK+. Status: Young but active. A minimal app looks like this: Shoes.app { @push = button "Push me" @note = para "Nothing pushed so far" @push.click { @note.replace "Aha! Click!" } } Tcl/Tk Tcl/Tk. Crossplatform (its own widget set). Mature (probably even dated) and active. An example: #!/usr/bin/env wish button .hello -text "Hello, World!" -command { exit } pack .hello tkwait window . tekUI tekUI for Lua (and C). Platforms: X11, DirectFB. Status: Alpha (usable, but API still evolves). An example: #/usr/bin/env lua ui = require "tek.ui" ui.Application:new { Children = { ui.Window:new { Title = "Hello", Children = { ui.Text:new { Text = "_Hello, World!", Style = "button", Mode = "button", }, }, }, }, }:run() Treethon Treethon for Python. It describes GUI in a YAML file (Python in a YAML tree). Platform: GTK+. Status: work in proress. A simple app looks like this: _import: gtk view: gtk.Window() add: - view: gtk.Button('Hello World') on clicked: print view.get_label() Yet unnamed Python library by Richard Jones: This one is not released yet. The idea is to use Python context managers (with keyword) to structure GUI code. See Richard Jones' blog for details. with gui.vertical: text = gui.label('hello!') items = gui.selection(['one', 'two', 'three']) with gui.button('click me!'): def on_click(): text.value = items.value text.foreground = red XUL XUL + Javascript may be used to create stand-alone desktop apps with XULRunner as well as Mozilla extensions. Mature, open source, crossplatform. <?xml version="1.0"?> <?xml-stylesheet href="chrome://global/skin/" type="text/css"?> <window id="main" title="My App" width="300" height="300" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"> <caption label="Hello World"/> </window> Thank your for contributions!

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• MySQL Volleyball Standings

  - by Torez

  I have a database table full of game by game results and want to know if I can calculate the following: GP (games played) Wins Loses Points (2 points for each win, 1 point for each lose) Here is my table structure: CREATE TABLE `results` ( `id` int(10) unsigned NOT NULL auto_increment, `home_team_id` int(10) unsigned NOT NULL, `home_score` int(3) unsigned NOT NULL, `visit_team_id` int(10) unsigned NOT NULL, `visit_score` int(3) unsigned NOT NULL, PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=7 ; And a few testing results: INSERT INTO `results` VALUES(1, 1, 21, 2, 25); INSERT INTO `results` VALUES(2, 3, 21, 4, 17); INSERT INTO `results` VALUES(3, 1, 25, 3, 9); INSERT INTO `results` VALUES(4, 2, 7, 4, 22); INSERT INTO `results` VALUES(5, 1, 19, 4, 20); INSERT INTO `results` VALUES(6, 2, 24, 3, 26); Here is what a final table would look like: +-------------------+----+------+-------+--------+ | Team Name | GP | Wins | Loses | Points | +-------------------+----+------+-------+--------+ | Spikers | 4 | 4 | 0 | 8 | | Leapers | 4 | 2 | 2 | 6 | | Ground Control | 4 | 1 | 3 | 5 | | Touch Guys | 4 | 0 | 4 | 4 | +-------------------+----+------+-------+--------+

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• Creating an installer with WPF forms, packaged files and custom setup actions in C#

  - by RodH257

  I'm trying to create a way of deploying a set of tools (which are add-ins to 3rd party software) to my users. I would like to do the following: User Enters Serial Dlls in their directory structure is extracted to program files a file is copied to a location in ProgramData (this registers my add-ins to the 3rd party application) Online activation for software is performed Can anyone point me into the right direction for this? I had a look at deployment projects in Visual Studio but I'm not sure if they are what I'm after. Main problem is they are ugly, I would like to have a nice WPF installer, and have a more custom experience. But I guess that can be traded off if its going to make things easier. I was thinking, I could just make my own C# project that extracts the files, but I have no idea how to package them up and extract them all as part of one download (like the MSI files that the deployment projects create). Can anyone point me in the right direction?

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• Apache .htaccess

  - by Peter

  Hi! I have a htaccess problem. My directory structure look like this: / HEADER.html README.html /stackoverflow/ /stackoverflow/.htaccess .htaccess ServerSignature Off Options +Indexes HeaderName /HEADER.html IndexIgnore HEADER.html ReadmeName /README.html IndexIgnore /README.html IndexOptions +FancyIndexing AddCharset UTF-8 .txt IndexIgnore *.xml IndexIgnore *.php My primary directory is /stackoverflow/, when I navigate to this directory via browser I have included HEADER.html and README.html on every site/directories under /stackoverflow/, this works fine. I added some php code to my HEADER.html (which is in the root directory / ), I am trying to add to htaccess: AddType application/x-httpd-php .html .php .htm This not working, I think because the HEADER.html is in the root. If I try add the AddType... to the /.htaccess (and not to the /stackoverflow/.htaccess) it is overwriting my /stackoverflow/.htaccess rules. Why? How I can add AddType rule to my /stackoverflow/.htaccess to Apache parse html file as php file?

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