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  • Default or fink python and lxml under 10.6.8

    - by songdogtech
    Ah, confusion. I'm trying to install a python library called lxml as needed by a python script. I've been through numerous SU quesitons and answers. I haven't been able to make much progress. I run easy_install lxml and get: Processing lxml-3.0.1-py2.6-macosx-10.6-universal.egg lxml 3.0.1 is already the active version in easy-install.pth Using /Library/Python/2.6/site-packages/lxml-3.0.1-py2.6-macosx-10.6-universal.egg Processing dependencies for lxml Finished processing dependencies for lxml but when I run my script, I get: File "scraper.py", line 3, in import lxml.html File "/Library/Python/2.6/site-packages/lxml-3.0.1-py2.6-macosx-10.6-universal.egg/lxml/html/init.py", line 42, in from lxml import etree ImportError: dlopen(/Library/Python/2.6/site-packages/lxml-3.0.1-py2.6-macosx-10.6-universal.egg/lxml/etree.so, 2): Symbol not found: _htmlParseChunk Referenced from: /Library/Python/2.6/site-packages/lxml-3.0.1-py2.6-macosx-10.6-universal.egg/lxml/etree.so Expected in: flat namespace in /Library/Python/2.6/site-packages/lxml-3.0.1-py2.6-macosx-10.6-universal.egg/lxml/etree.so I think that maybe I'm not using the correct python install? I've installed python with fink, but should I use OS X's python? This is in my .profile: test -r /sw/bin/init.sh && . /sw/bin/init.sh which points to the fink install. echo $PATH gives me: /sw/bin:/sw/sbin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin:/usr/X11R6/bin Should I change that to point to snow leopard's python? (Which is 2.6.1) In Library/, there is: which are the lxml libaries I need, it appears, as well as requests. And whereis python gives me /usr/bin/python What do I do? How do I get python to use these libraries. And which python?

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  • Java error: Bad version number in .class file error when trying to run Cassandra on OS X

    - by Sam Lee
    I am trying to get Cassandra to work on OS X. When I run bin/cassandra, I get the following error: ~/apache-cassandra-incubating-0.4.1-src > bin/cassandra -f Listening for transport dt_socket at address: 8888 Exception in thread "main" java.lang.UnsupportedClassVersionError: Bad version number in .class file at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:675) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124) at java.net.URLClassLoader.defineClass(URLClassLoader.java:260) at java.net.URLClassLoader.access$100(URLClassLoader.java:56) at java.net.URLClassLoader$1.run(URLClassLoader.java:195) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:316) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:280) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:374) From what I could determine by searching, this error is related to incompatible versions of Java. However, as far as I can tell, I have the latest version of Java: ~/apache-cassandra-incubating-0.4.1-src > java -version java version "1.6.0_13" Java(TM) SE Runtime Environment (build 1.6.0_13-b03-211) Java HotSpot(TM) 64-Bit Server VM (build 11.3-b02-83, mixed mode) ~/apache-cassandra-incubating-0.4.1-src > javac -version javac 1.6.0_13 ~/Downloads/apache-cassandra-incubating-0.4.1-src > echo $JAVA_HOME /System/Library/Frameworks/JavaVM.framework/Versions/1.6/Home Any ideas on what I'm doing wrong?

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  • Cannot assign - must be a "UserProfile" instance

    - by webvulture
    I have a class UserProfile defined which takes the default user as a foreign key. Now another class A has a foreign key to UserProfile. So for saving any instance in class A, how do i give it the userprofile object. Also, does making a class UserProfile mean that class user is still used and class UserProfile is just some other table? I need to know this as I have to take care of the user profile creation, so I should know what gets stored where? -- Confused

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  • What is in scala-android.jar?

    - by synic
    I've been trying to experiment with developing Android applications with Scala. I've gotten to the point where I can get the app to compile, but there are no helper functions for things like: button.setOnClickListener( () => { text.setText("test") }) (I'm talking about the closure there) I see lots of references to scala-android.jar, and have this file in my project, but I'm not sure what it does, or how to use it. I get the feeling it has these helper conversion functions, but I'm not sure. Running jar -tvf scala-android.jar on the file gives me this: 401 Sun Jun 06 10:06:02 MDT 2010 scala/Function0$class.class 431 Sun Jun 06 10:06:02 MDT 2010 scala/Function0.class 572 Sun Jun 06 10:06:02 MDT 2010 scala/Function1.class 282 Sun Jun 06 10:06:02 MDT 2010 scala/ScalaObject$class.class 271 Sun Jun 06 10:06:02 MDT 2010 scala/ScalaObject.class 458 Sun Jun 06 10:06:02 MDT 2010 scala/runtime/BoxedUnit.class If this isn't what I'm looking for, is there a simple library that'll do conversions for this kind of stuff?

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  • how to determine which of the installed chrome extensions are showing text-enhanced ads or are injecting new CSS class names?

    - by syedrakib
    I have three google users [personal, work, work] in my chrome on Mac OS X. The chrome for my personal account [not the other two chromes] has text-enhanced ads in every site i go to. It double-underlines some keywords on every page. On mouse hover I get an ad overlay from http[colon][slash][slash]intext.nav-links.com[slash] Upon right-clicking one of the text-enhanced keywords and going to 'inspect element', i see that the text has been wrapped around with a CSS classname called adtext. It even shows the .adtext CSS descriptions on the right. How do i determine from WHICH particular extension is this CSS classname being injected into my pages?

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  • How do I track down the source of a KVC exception: this class is not key value coding-compliant for

    - by sam
    I get this error when I try to run my app: 2010-04-29 13:49:01.355 MyApp[56123:207] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<MyViewController 0x5112b10> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key toolbar.' MyViewController used to have an IBOutlet called 'toolbar' that connected to a UIToolbar object in a nib. I decided I no longer needed the toolbar or the nib so I removed them from the project. But Xcode seems to still want to refer to 'toolbar'. Where might the reference to toolbar be if I no longer use a nib? I can synthesize a dummy 'toolbar' property to appease Xcode, but I want to avoid this kind of ugly hack.

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  • Can I use boost::make_shared with a private constructor?

    - by Billy ONeal
    Consider the following: class DirectoryIterator; namespace detail { class FileDataProxy; class DirectoryIteratorImpl { friend class DirectoryIterator; friend class FileDataProxy; WIN32_FIND_DATAW currentData; HANDLE hFind; std::wstring root; DirectoryIteratorImpl(); explicit DirectoryIteratorImpl(const std::wstring& pathSpec); void increment(); public: ~DirectoryIteratorImpl() {}; }; class FileDataProxy //Serves as a proxy to the WIN32_FIND_DATA struture inside the iterator. { friend class DirectoryIterator; boost::shared_ptr<DirectoryIteratorImpl> iteratorSource; FileDataProxy(boost::shared_ptr<DirectoryIteratorImpl> parent) : iteratorSource(parent) {}; public: std::wstring GetFolderPath() const { return iteratorSource->root; } }; } class DirectoryIterator : public boost::iterator_facade<DirectoryIterator, detail::FileDataProxy, std::input_iterator_tag> { friend class boost::iterator_core_access; boost::shared_ptr<detail::DirectoryIteratorImpl> impl; void increment() { impl->increment(); }; detail::FileDataProxy dereference() const { return detail::FileDataProxy(impl); }; public: DirectoryIterator() { impl = boost::make_shared<detail::DirectoryIteratorImpl>(); }; }; It seems like DirectoryIterator should be able to call boost::make_shared<DirectoryIteratorImpl>, because it is a friend of DirectoryIteratorImpl. However, this code fails to compile because the constructor for DirectoryIteratorImpl is private. Since this class is an internal implementation detail that clients of DirectoryIterator should never touch, it would be nice if I could keep the constructor private. Is this my fundamental misunderstanding around make_shared or do I need to mark some sort of boost piece as friend in order for the call to compile?

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  • Java-Maven: How to add manually a library to the maven repository?

    - by Aaron
    I'm trying to generate a jasperReport, but I receive this: net.sf.jasperreports.engine.util.JRFontNotFoundException: Font 'Times New Roman' is not available to the JVM. See the Javadoc for more details. After searching on the net, I found that I need to add a jar to the classpath with the font. So, I create a jar file with the ttf files and now I want to add this as a dependency to my pom file. So: I installed the file : mvn install:install-file -Dfile=tf.jar -DgroupId=tf -DartifactId=tf -Dversion=1.0.0 -Dpackaging=jar and in my pom, I added these lines: <dependency> <groupId>tf</groupId> <artifactId>tf</artifactId> <version>1.0.0</version> </dependency> but I receive this: Dependency 'tf:tf:1.0.0' not found less I checked the repository folder and the jar file is there, in ... tf\tf\1.0.0\ What I'm doing wrong?

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  • HTMLAgilitypack getting <P> and <STRONG> text

    - by StealthRT
    Hey all i am looking for a way to get this HTML code: <DIV class=channel_row><SPAN class=channel> <DIV class=logo><IMG src='/images/channel_logos/WGNAMER.png'></DIV> <P><STRONG>2</STRONG><BR>WGNAMER </P></SPAN> using the HtmlAgilityPack. I have been trying this: With channel info!Logo = .SelectSingleNode(".//img").Attributes("src").Value info!Channel = .SelectSingleNode(".//span[@class='channel']").ChildNodes(1).ChildNodes(0).InnerText info!Station = .SelectSingleNode(".//span[@class='channel']").ChildNodes(1).ChildNodes(2).InnerText End With I can get the Logo but it comes up with a blank string for the Channel and for the Station it says Index was out of range. Must be non-negative and less than the size of the collection. I've tried all types of combinations: info!Station = .SelectSingleNode(".//span[@class='channel']").ChildNodes(1).ChildNodes(1).InnerText info!Station = .SelectSingleNode(".//span[@class='channel']").ChildNodes(1).ChildNodes(3).InnerText info!Station = .SelectSingleNode(".//span[@class='channel']").ChildNodes(0).ChildNodes(1).InnerText info!Station = .SelectSingleNode(".//span[@class='channel']").ChildNodes(0).ChildNodes(2).InnerText info!Station = .SelectSingleNode(".//span[@class='channel']").ChildNodes(0).ChildNodes(3).InnerText What do i need to do in order to correct this?

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  • jQuery UI Accordion CSS

    - by ScG
    I am planning to use the jQuery UI Accordion and also the default theme provided I see that the jQuery UI Accordion uses the following classes from this url link text <div class="ui-accordion ui-widget ui-helper-reset"> <h3 class="ui-accordion-header ui-helper-reset ui-state-active ui-corner-top"> <span class="ui-icon ui-icon-triangle-1-s"/> <a href="#">Section 1</a> </h3> <div class="ui-accordion-content ui-helper-reset ui-widget-content ui-corner-bottom ui-accordion-content-active"> Section 1 content </div> <h3 class="ui-accordion-header ui-helper-reset ui-state-default ui-corner-all"> <span class="ui-icon ui-icon-triangle-1-e"/> <a href="#">Section 2</a> </h3> <div class="ui-accordion-content ui-helper-reset ui-widget-content ui-corner-bottom"> Section 2 content </div> <h3 class="ui-accordion-header ui-helper-reset ui-state-default ui-corner-all"> <span class="ui-icon ui-icon-triangle-1-e"/> <a href="#">Section 3</a> </h3> <div class="ui-accordion-content ui-helper-reset ui-widget-content ui-corner-bottom"> Section 3 content </div> </div> I do not want to use the entire CSS from the theme file, just the ones required for the UI Accordion. However I am not able to create the same effect. Anyone can help?

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  • Does there exist a jQuery plugin or JavaScript library that allows Venn Diagram presentation?

    - by knowncitizen
    I'm writing a jQuery application to allow analysis of data with the help of visual cues. My data is retrieved via XMLHttpRequest in the form of JSON. The visual cues include histograms, spark lines, and various other graph types. The idea is that the user is able to narrow their data via these various visual views. My question is thus - aside from the Google Charts API, does there exist a JavaScript way of presenting a Venn Diagram? Requirement: no Flash. Canvas is acceptable.

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  • REST API Help in Rails

    - by dannymcc
    Hi Everyone, I am trying to get some information posted using our accountancy package (FreeAgentCentral) using their API via a GEM. http://github.com/aaronrussell/freeagent_api/ I have the following code to get it working (supposedly): Kase Controller def create @kase = Kase.new(params[:kase]) @company = Company.find(params[:kase][:company_id]) @kase = @company.kases.create!(params[:kase]) respond_to do |format| if @kase.save UserMailer.deliver_makeakase("[email protected]", "Highrise", @kase) @kase.create_freeagent_project(current_user) #flash[:notice] = 'Case was successfully created.' flash[:notice] = fading_flash_message("Case was successfully created & sent to Highrise.", 5) format.html { redirect_to(@kase) } format.xml { render :xml => @kase, :status => :created, :location => @kase } else format.html { render :action => "new" } format.xml { render :xml => @kase.errors, :status => :unprocessable_entity } end end end To save you looking through, the important part is: @kase.create_freeagent_project(current_user) Kase Model # FreeAgent API Project Create # Required attribues # :contact_id # :name # :payment_term_in_days # :billing_basis # must be 1, 7, 7.5, or 8 # :budget_units # must be Hours, Days, or Monetary # :status # must be Active or Completed def create_freeagent_project(current_user) p = Freeagent::Project.create( :contact_id => 0, :name => "#{jobno} - #{highrisesubject}", :payment_terms_in_days => 5, :billing_basis => 1, :budget_units => 'Hours', :status => 'Active' ) user = Freeagent::User.find_by_email(current_user.email) Freeagent::Timeslip.create( :project_id => p.id, :user_id => user.id, :hours => 1, :new_task => 'Setup', :dated_on => Time.now ) end lib/freeagent_api.rb require 'rubygems' gem 'activeresource', '< 3.0.0.beta1' require 'active_resource' module Freeagent class << self def authenticate(options) Base.authenticate(options) end end class Error < StandardError; end class Base < ActiveResource::Base def self.authenticate(options) self.site = "https://#{options[:domain]}" self.user = options[:username] self.password = options[:password] end end # Company class Company def self.invoice_timeline InvoiceTimeline.find :all, :from => '/company/invoice_timeline.xml' end def self.tax_timeline TaxTimeline.find :all, :from => '/company/tax_timeline.xml' end end class InvoiceTimeline < Base self.prefix = '/company/' end class TaxTimeline < Base self.prefix = '/company/' end # Contacts class Contact < Base end # Projects class Project < Base def invoices Invoice.find :all, :from => "/projects/#{id}/invoices.xml" end def timeslips Timeslip.find :all, :from => "/projects/#{id}/timeslips.xml" end end # Tasks - Complete class Task < Base self.prefix = '/projects/:project_id/' end # Invoices - Complete class Invoice < Base def mark_as_draft connection.put("/invoices/#{id}/mark_as_draft.xml", encode, self.class.headers).tap do |response| load_attributes_from_response(response) end end def mark_as_sent connection.put("/invoices/#{id}/mark_as_sent.xml", encode, self.class.headers).tap do |response| load_attributes_from_response(response) end end def mark_as_cancelled connection.put("/invoices/#{id}/mark_as_cancelled.xml", encode, self.class.headers).tap do |response| load_attributes_from_response(response) end end end # Invoice items - Complete class InvoiceItem < Base self.prefix = '/invoices/:invoice_id/' end # Timeslips class Timeslip < Base def self.find(*arguments) scope = arguments.slice!(0) options = arguments.slice!(0) || {} if options[:params] && options[:params][:from] && options[:params][:to] options[:params][:view] = options[:params][:from]+'_'+options[:params][:to] options[:params].delete(:from) options[:params].delete(:to) end case scope when :all then find_every(options) when :first then find_every(options).first when :last then find_every(options).last when :one then find_one(options) else find_single(scope, options) end end end # Users class User < Base self.prefix = '/company/' def self.find_by_email(email) users = User.find :all users.each do |u| u.email == email ? (return u) : next end raise Error, "No user matches that email!" end end end config/initializers/freeagent.rb Freeagent.authenticate({ :domain => 'XXXXX.freeagentcentral.com', :username => '[email protected]', :password => 'XXXXXX' }) The above render the following error when trying to create a new Case and send the details to FreeAgent: ActiveResource::ResourceNotFound in KasesController#create Failed with 404 Not Found and ActiveResource::ResourceNotFound (Failed with 404 Not Found): app/models/kase.rb:56:in `create_freeagent_project' app/controllers/kases_controller.rb:96:in `create' app/controllers/kases_controller.rb:93:in `create' Rendered rescues/_trace (176.5ms) Rendered rescues/_request_and_response (1.1ms) Rendering rescues/layout (internal_server_error) If anyone can shed any light on this problem it would be greatly appreciated! Thanks, Danny

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  • jquery question - addclass to element depending on active image in rotating banner

    - by whitman6732
    I have a banner that rotates a series of three images. The active one has a display:block, while the inactive have display:none. I'm trying to match the class for the active image with an tag so that I can add an "active" class to the a tag. Having some trouble writing that function. It's adding all of the classes for each of the img elements, regardless of whether they're being displayed or not... The html markup looks like this: <div id="banner-area"> <div class="clearfix" id="promo-boxes-nav"> <ul id="banner-tabs"> <li> <ul id="page-tabs"> <li><a class="t39" href="#">1</a></li> <li><a class="t42" href="#">2</a></li> <li><a class="t49" href="#">3</a></li> </ul> </li> <li class="last">&nbsp;</li> </ul> </div> <div id="banner-content"> <img class="t39" src="http://localhost:8888/1.png" style="position: absolute; top: 0px; left: 0px; display: none; opacity: 0;"> <img class="t42" src="http://localhost:8888/2.png" style="position: absolute; top: 0px; left: 0px; display: block; opacity: 1;"> <img class="t49" src="http://localhost:8888/3.png" style="position: absolute; top: 0px; left: 0px; display: none;opacity: 0;"> </div> </div> The function in its current form looks like this: $j(document).ready(function() { $j('#banner-content') .cycle({ fx: 'fade', speed: 300, timeout: 3000, next: '.t1', pause: 1 }); if($j('#page-tabs a').attr('class')) { $j('#banner-content img').each(function() { if($j(this).attr('display','block')) { var bcClass = $j(this).attr('class'); } $j('#page-tabs li a').each(function() { if($j('#page-tabs li a').hasClass(bcClass)) { $j(this).addClass(bcClass); } }); }); } })

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  • Namespaced Backbone.js Views not firing events

    - by Stasio
    I'm currently getting started with Backbone.js. I've wrote some examples with Backbone and they are working fine. But now I need to use Backbone.js with Rails 3.1 and CoffeeScript. I took my well-working examples and rewrote on CoffeeScript using backbone-rails gem. And got the following problem. I've simplyfied code, but the problem is still remaining I've got the following files: Here I'm starting my Backbone app at main.js.coffee file according to my main_controller in rails app: $ = jQuery $-> CsfTaskManager.init() Here is backbone app description: #= require_self #= require_tree ./templates #= require_tree ./models #= require_tree ./views #= require_tree ./routers window.CsfTaskManager = Models: {} Collections: {} Routers: {} Views: {} init: -> new CsfTaskManager.Routers.AppRouter() Backbone.history.start() This is my apps' router: class CsfTaskManager.Routers.AppRouter extends Backbone.Router initialize: (options) -> goalsBlock = new CsfTaskManager.Views.goalsView() routes: "!/": "root", some other routes... And finally view: class CsfTaskManager.Views.goalsView extends Backbone.View initialize: -> this.goals = new CsfTaskManager.Collections.GoalsCollection() el: $('div#app'), events: "click .add-btn": "addGoal" addGoal: -> alert('ji') HTML page has such code: <div id="app"> <div class="app-screen hidden" id="goal-form" style="display: block; "> <button class="btn" id="load"> Load </button> <h3> New Goal </h3> <div class="form-stacked"> <form accept-charset="UTF-8" action="/goals" class="new_goal" id="new_goal" method="post"><div style="margin:0;padding:0;display:inline"><input name="utf8" type="hidden" value="?"><input name="authenticity_token" type="hidden" value="Pnt+V/tS1/b079M/1ZIRdw2ss1D6bvJKVh868DXRjUg="></div> <label for="goal_title">Title</label> <p></p> <input class="goal-title" id="goal_title" name="goal[title]" size="30" type="text"> <p></p> <label for="goal_note">Note</label> <p></p> <input class="goal-note" id="goal_note" name="goal[note]" size="30" type="text"> </form> </div> <p> <button class="add-btn btn"> Add </button> </p> <ul id="goals-list"></ul> </div> <table class="app-screen bordered-table" id="calendar-grid" style="display: none; "> <tbody><tr> <td colspan="2"> week </td> </tr> <tr> <td> day </td> <td> <div id="calendar"></div> </td> </tr> </tbody></table> <div class="app-screen hidden" id="role-form" style="display: none; "> <h3> New User Role </h3> <div class="form-stacked"> <form accept-charset="UTF-8" action="/roles" class="new_role" id="new_role" method="post"><div style="margin:0;padding:0;display:inline"><input name="utf8" type="hidden" value="?"><input name="authenticity_token" type="hidden" value="Pnt+V/tS1/b079M/1ZIRdw2ss1D6bvJKVh868DXRjUg="></div> <label for="role_title">Title</label> <p></p> <input class="role-title" id="role_name" name="role[name]" size="30" type="text"> <p></p> <label for="role_note">Note</label> <p></p> <input class="role-note" id="role_description" name="role[description]" size="30" type="text"> </form> </div> <p> <button class="add-btn btn"> Add </button> </p> </div> </div> So .add-btn element is nested in #app, but click on this button doesn't fire event. Where can be a trouble? Before, when I had the same app in one .js file, without of coffeescript, namespacing and backbone-rails gem, everything was allright. Bytheway, appRouter works fine, goalsView object is created successfully too, but events don't fire for some reasons. Please give me some hint, because I'm really got stuck...

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  • Properties in partial class not appearing in Data Sources window!

    - by Tim Murphy
    Entity Framework has created the required partial classes. I can add these partial classes to the Data Sources window and the properties display as expected. However, if I extend any of the classes in a separate source file these properties do not appear in the Data Sources window even after a build and refresh. All properties in partial classes across source files work as expected in the Data Sources window except when the partial class has been created with EF. EDIT: After removing the offending table for edm designer, adding back in it all works are expected. Hardly a long term solution. Anyone else come across a similar problem?

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  • Superfish: How to keep sub menu open after it has been clicked

    - by Roland
    I'm having the following scenario. I have a menu and if one hovers over the menu a sub menu appears and if mouse moves out the sub menu disappears, now I want the following if I click on the on a item in the sub menu, I want the sub-menu to remain open, when the new page has been loaded. I'm using superfish Jquery plugin for this. Is this possible and if how. my code in html <div id="nav"> <div id="nav2"> <ul class="sf-menu sf-navbar "> <li> <a title="HOME" class="sf-with-ul " href="/index.php?r=site/index&amp;sid=1">HOME</a> </li> </ul> <ul class="sf-menu sf-navbar"> <li> <a href="?sid=2" id="gallery" class="sf-with-ul selected_main">GALLERY</a> <ul class="subs" id="sub1"><li class="arrow"><img src="images/arrow.gif" /></li><li><a title="Kitchens" href="/index.php?r=images/sddsd&amp;id=1">Kitchens</a></li><li><a title="Vanities" href="/index.php?r=images/sddsd&amp;id=2">Vanities</a></li></ul> </li> </ul> <ul class="sf-menu sf-navbar "> <li> <a href="?sid=3" class="sf-with-ul " >ACCESSORIES</a> <ul class="subs" id=""><li class="arrow"><img src="images/arrow.gif" /></li><li><a title="Door Handles" href="/index.php?r=images/sddsd&amp;id=2">Door Handles</a></li><li><a title="Spanners" href="/index.php?r=images/sddsd&amp;id=1">Spanners</a></li></ul> </li> </ul> <ul class="sf-menu sf-navbar "> <li> <a title="CONTACT US" class="sf-with-ul " href="/index.php?r=site/contact&amp;sid=4">CONTACT US</a> </li> </ul> </div> </div> and then the superfish code $(function(){ $("ul.sf-menu").superfish({ delay: 0, speed: 'fast', autoArrows: false, dropShadows: false }); }); I've also noticed that the following css code is used to display the item left: 0; top: 2.5em; z-index: 99;

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  • Unresolved External Symbol? error lnk2019

    - by jay
    Hello, I was wondering if anyone knew what this error meant. Thanks error LNK2019: unresolved external symbol "public: void __thiscall LinkedList,class std::allocator ::LocItem *::decreasekey(class PriorityList,class std::allocator ::LocItem * const &)" (?decreasekey@?$LinkedList@HPAVLocItem@?$PriorityList@HV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@@@QAEXABQAVLocItem@?$PriorityList@HV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@@Z) referenced in function "public: void __thiscall PriorityList,class std::allocator ::decreasekey(class PriorityList,class std::allocator ::Locator)" (?decreasekey@?$PriorityList@HV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@QAEXVLocator@1@@Z)

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  • Adding Functions to an Implementation of Vector

    - by Meursault
    I have this implementation of vector that I've been working on for a few days using examples from a textbook: #include <iostream> #include <string> #include <cassert> #include <algorithm> #include <cstring> // Vector.h using namespace std; template <class T> class Vector { public: typedef T * iterator; Vector(); Vector(unsigned int size); Vector(unsigned int size, const T & initial); Vector(const Vector<T> & v); // copy constructor ~Vector(); unsigned int capacity() const; // return capacity of vector (in elements) unsigned int size() const; // return the number of elements in the vector bool empty() const; iterator begin(); // return an iterator pointing to the first element iterator end(); // return an iterator pointing to one past the last element T & front(); // return a reference to the first element T & back(); // return a reference to the last element void push_back(const T & value); // add a new element void pop_back(); // remove the last element void reserve(unsigned int capacity); // adjust capacity void resize(unsigned int size); // adjust size void erase(unsigned int size); // deletes an element from the vector T & operator[](unsigned int index); // return reference to numbered element Vector<T> & operator=(const Vector<T> &); private: unsigned int my_size; unsigned int my_capacity; T * buffer; }; template<class T>// Vector<T>::Vector() { my_capacity = 0; my_size = 0; buffer = 0; } template<class T> Vector<T>::Vector(const Vector<T> & v) { my_size = v.my_size; my_capacity = v.my_capacity; buffer = new T[my_size]; for (int i = 0; i < my_size; i++) buffer[i] = v.buffer[i]; } template<class T>// Vector<T>::Vector(unsigned int size) { my_capacity = size; my_size = size; buffer = new T[size]; } template<class T>// Vector<T>::Vector(unsigned int size, const T & initial) { my_size = size; //added = size my_capacity = size; buffer = new T [size]; for (int i = 0; i < size; i++) buffer[i] = initial; } template<class T>// Vector<T> & Vector<T>::operator = (const Vector<T> & v) { delete[ ] buffer; my_size = v.my_size; my_capacity = v.my_capacity; buffer = new T [my_size]; for (int i = 0; i < my_size; i++) buffer[i] = v.buffer[i]; return *this; } template<class T>// typename Vector<T>::iterator Vector<T>::begin() { return buffer; } template<class T>// typename Vector<T>::iterator Vector<T>::end() { return buffer + size(); } template<class T>// T& Vector<T>::Vector<T>::front() { return buffer[0]; } template<class T>// T& Vector<T>::Vector<T>::back() { return buffer[size - 1]; } template<class T> void Vector<T>::push_back(const T & v) { if (my_size >= my_capacity) reserve(my_capacity +5); buffer [my_size++] = v; } template<class T>// void Vector<T>::pop_back() { my_size--; } template<class T>// void Vector<T>::reserve(unsigned int capacity) { if(buffer == 0) { my_size = 0; my_capacity = 0; } if (capacity <= my_capacity) return; T * new_buffer = new T [capacity]; assert(new_buffer); copy (buffer, buffer + my_size, new_buffer); my_capacity = capacity; delete[] buffer; buffer = new_buffer; } template<class T>// unsigned int Vector<T>::size()const { return my_size; } template<class T>// void Vector<T>::resize(unsigned int size) { reserve(size); my_size = size; } template<class T>// T& Vector<T>::operator[](unsigned int index) { return buffer[index]; } template<class T>// unsigned int Vector<T>::capacity()const { return my_capacity; } template<class T>// Vector<T>::~Vector() { delete[]buffer; } template<class T> void Vector<T>::erase(unsigned int size) { } int main() { Vector<int> v; v.reserve(2); assert(v.capacity() == 2); Vector<string> v1(2); assert(v1.capacity() == 2); assert(v1.size() == 2); assert(v1[0] == ""); assert(v1[1] == ""); v1[0] = "hi"; assert(v1[0] == "hi"); Vector<int> v2(2, 7); assert(v2[1] == 7); Vector<int> v10(v2); assert(v10[1] == 7); Vector<string> v3(2, "hello"); assert(v3.size() == 2); assert(v3.capacity() == 2); assert(v3[0] == "hello"); assert(v3[1] == "hello"); v3.resize(1); assert(v3.size() == 1); assert(v3[0] == "hello"); Vector<string> v4 = v3; assert(v4.size() == 1); assert(v4[0] == v3[0]); v3[0] = "test"; assert(v4[0] != v3[0]); assert(v4[0] == "hello"); v3.pop_back(); assert(v3.size() == 0); Vector<int> v5(7, 9); Vector<int>::iterator it = v5.begin(); while (it != v5.end()) { assert(*it == 9); ++it; } Vector<int> v6; v6.push_back(100); assert(v6.size() == 1); assert(v6[0] == 100); v6.push_back(101); assert(v6.size() == 2); assert(v6[0] == 100); v6.push_back(101); cout << "SUCCESS\n"; } So far it works pretty well, but I want to add a couple of functions to it that I can't find examples for, a SWAP function that would look at two elements of the vector and switch their values and and an ERASE function that would delete a specific value or range of values in the vector. How should I begin implementing the two extra functions?

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  • Fluent | Nhibernate multiple inheritance mapping?

    - by Broken Pipe
    I'm trying to map this classes: public interface IBusinessObject { Guid Id { get; set; } } public class Product { public virtual Guid Id { get; set; } public virtual int ProductTypeId { get; set; } } public class ProductWeSell : Product, IBusinessObject { } public class ProductWeDontSell : Product { } Using this Fluent mapping code: public class IBusinessObjectMap : ClassMap<IBusinessObject> { public IBusinessObjectMap() { Id(t => t.Id).GeneratedBy.Guid(); Table("BusinessObject"); } } public class ProductMap : ClassMap<Product> { public ProductMap() { Id(t => t.Id); DiscriminateSubClassesOnColumn("ProductTypeId", "null").Nullable(); } } public class ProductWeSellMap : SubclassMap<ProductWeSell> { public ProductWeSellMap() { DiscriminatorValue(1); KeyColumn("Id"); } } public class ProductWeDontSellMap : SubclassMap<ProductWeDontSell> { public ProductWeDontSellMap() { DiscriminatorValue(2); KeyColumn("Id"); } } But I get {"Duplicate class/entity mapping ProductWeSell"} error. And if we take a look at generated HBM, indeed it's duplicated, but i have no idea how to write this mapping without duplicating it if it's possible at all. Produced hbm: <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"> <class xmlns="urn:nhibernate-mapping-2.2" name="IBusinessObject" table="BusinessObject"> <joined-subclass name="ProductWeSell" table="ProductWeSell"/> </class> </hibernate-mapping> <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"> <class xmlns="urn:nhibernate-mapping-2.2" discriminator-value="null" name="Product" table="Product"> <discriminator type="String"> <column name="ProductTypeId" not-null="false" /> </discriminator> <subclass name="ProductWeDontSell" discriminator-value="2" /> <subclass name="ProductWeSell" discriminator-value="1" /> </class> </hibernate-mapping> So far I was unable to figure out how to map this using fluent Nhibernate (i haven't tried mapping this using hmb files). Any help appreciated Fluent or HBM files. The thing I'm trying to solve look identical to this topic: NHibernate inheritance mapping question

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  • multiple-inheritance substitution

    - by Luigi
    I want to write a module (framework specific), that would wrap and extend Facebook PHP-sdk (https://github.com/facebook/php-sdk/). My problem is - how to organize classes, in a nice way. So getting into details - Facebook PHP-sdk consists of two classes: BaseFacebook - abstract class with all the stuff sdk does Facebook - extends BaseFacebook, and implements parent abstract persistance-related methods with default session usage Now I have some functionality to add: Facebook class substitution, integrated with framework session class shorthand methods, that run api calls, I use mostly (through BaseFacebook::api()), authorization methods, so i don't have to rewrite this logic every time, configuration, sucked up from framework classes, insted of passed as params caching, integrated with framework cache module I know something has gone very wrong, because I have too much inheritance that doesn't look very normal.Wrapping everything in one "complex extension" class also seems too much. I think I should have few working togheter classes - but i get into problems like: if cache class doesn't really extend and override BaseFacebook::api() method - shorthand and authentication classes won't be able to use the caching. Maybe some kind of a pattern would be right in here? How would you organize these classes and their dependencies? EDIT 04.07.2012 Bits of code, related to the topic: This is how the base class of Facebook PHP-sdk: abstract class BaseFacebook { // ... some methods public function api(/* polymorphic */) { // ... method, that makes api calls } public function getUser() { // ... tries to get user id from session } // ... other methods abstract protected function setPersistentData($key, $value); abstract protected function getPersistentData($key, $default = false); // ... few more abstract methods } Normaly Facebook class extends it, and impelements those abstract methods. I replaced it with my substitude - Facebook_Session class: class Facebook_Session extends BaseFacebook { protected function setPersistentData($key, $value) { // ... method body } protected function getPersistentData($key, $default = false) { // ... method body } // ... implementation of other abstract functions from BaseFacebook } Ok, then I extend this more with shorthand methods and configuration variables: class Facebook_Custom extends Facebook_Session { public funtion __construct() { // ... call parent's constructor with parameters from framework config } public function api_batch() { // ... a wrapper for parent's api() method return $this->api('/?batch=' . json_encode($calls), 'POST'); } public function redirect_to_auth_dialog() { // method body } // ... more methods like this, for common queries / authorization } I'm not sure, if this isn't too much for a single class ( authorization / shorthand methods / configuration). Then there comes another extending layer - cache: class Facebook_Cache extends Facebook_Custom { public function api() { $cache_file_identifier = $this->getUser(); if(/* cache_file_identifier is not null and found a valid file with cached query result */) { // return the result } else { try { // call Facebook_Custom::api, cache and return the result } catch(FacebookApiException $e) { // if Access Token is expired force refreshing it parent::redirect_to_auth_dialog(); } } } // .. some other stuff related to caching } Now this pretty much works. New instance of Facebook_Cache gives me all the functionality. Shorthand methods from Facebook_Custom use caching, because Facebook_Cache overwrited api() method. But here is what is bothering me: I think it's too much inheritance. It's all very tight coupled - like look how i had to specify 'Facebook_Custom::api' instead of 'parent:api', to avoid api() method loop on Facebook_Cache class extending. Overall mess and ugliness. So again, this works but I'm just asking about patterns / ways of doing this in a cleaner and smarter way.

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  • Tabular (X)HTML forms

    - by detly
    I have a set of items that can be in various states. I want to allow a user to use an (X)HTML form to change the state, and easily view the state of a group of objects ...so to this end, I'd like a layout like: | item1 | radio button for state 1 | radio for state 2 | ... | [update button] | | item2 | radio button for state 1 | radio for state 2 | ... | [update button] | etc. I prefer the radio buttons to list boxes so that it's easy for a user to visually scan for things in a certain state. It seemed like perfectly tabular data to me. The only problem is, you can't have forms inside a table that cross table cells (ie. <tr> <form> <td> ... is invalid). I thought, "hey, I could have one giant form wrapping a table, and make the [update button] value contain the IDs for each row!" Turns out certain versions of IE send ALL THE SUBMIT BUTTON VALUES on any single form. So I thought perhaps to to lay it out with <div>s and place the forms inside a single <td>. But then they break a line on each <div>. So I fixed their width and made them float: left. But then they wrap inside the table cells if the table row is wider than the page, and the radio controls don't line up with the headings. Is it possible to lay this out as I intend? The XHTML below shows the intended structure. Observe what happens if you resize the browser window below the width of the table (ideally, the name would break or the table would show a scroll bar). <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head><title>Test</title> <style type="text/css"> .state-select, .thing-state-name, .update { float: left; width: 8em; } .state-select { text-align: center; } </style> </head> <body> <table> <thead> <tr> <th class="thing-name-header">Thing</th> <th> <div class="thing-state-name">Present</div> <div class="thing-state-name">Absent</div> <div class="thing-state-name">Haven't looked</div> </th> </tr> </thead> <tbody> <tr> <td>Apple</td> <td> <form action="something" method="post"> <input type="hidden" name="id" value="1" /> <div class="state-select"><input type="radio" name="presence" value="present" checked="checked" /></div> <div class="state-select"><input type="radio" name="presence" value="absent" /></div> <div class="state-select"><input type="radio" name="presence" value="unknown" /></div> <div class="update"><input type="submit" value="Update" /></div> </form> </td></tr> <tr> <td>Orange</td> <td> <form action="something" method="post"> <input type="hidden" name="id" value="2" /> <div class="state-select"><input type="radio" name="presence" value="present" /></div> <div class="state-select"><input type="radio" name="presence" value="absent" checked="checked" /></div> <div class="state-select"><input type="radio" name="presence" value="unknown" /></div> <div class="update"><input type="submit" value="Update" /></div> </form> </td></tr> <tr> <td>David Bowie</td> <td> <form action="something" method="post"> <input type="hidden" name="id" value="3" /> <div class="state-select"><input type="radio" name="presence" value="present" /></div> <div class="state-select"><input type="radio" name="presence" value="absent" /></div> <div class="state-select"><input type="radio" name="presence" value="unknown" checked="checked" /></div> <div class="update"><input type="submit" value="Update" /></div> </form> </td></tr> </tbody> </table> </body> </html>

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  • java servlet programming errror

    - by abson
    C:\Tomcat5.5\webapps\WEB-INF\classes>javac MyServlet.java MyServlet.java:2: package javax.servlet does not exist import javax.servlet.*; ^ MyServlet.java:3: package javax.servlet.http does not exist import javax.servlet.http.*; ^ MyServlet.java:5: cannot find symbol symbol: class HttpServlet public class MyServlet extends HttpServlet ^ MyServlet.java:7: cannot find symbol symbol : class HttpServletRequest location: class MyServlet public void doGet(HttpServletRequest req, HttpServletResponse res) throws Serv letException,IOException ^ MyServlet.java:7: cannot find symbol symbol : class HttpServletResponse location: class MyServlet public void doGet(HttpServletRequest req, HttpServletResponse res) throws Serv letException,IOException ^ MyServlet.java:7: cannot find symbol symbol : class ServletException location: class MyServlet public void doGet(HttpServletRequest req, HttpServletResponse res) throws Serv letException,IOException ^ 6 errors

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