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  • Dimensions of a collection, and how to traverse it in an efficient, elegant manner

    - by Bruce Ferguson
    I'm trying to find an elegant way to deal with multi-dimensional collections in Scala. My understanding is that I can have up to a 5 dimensional collection using tabulate, such as in the case of the following 2-Dimensional array: val test = Array.tabulate[Double](row,col)(_+_) and that I can access the elements of the array using for(i<-0 until row) { for(j<-0 until col) { test(i)(j) = 0.0 } } If I don't know a priori what I'm going to be handling, what might be a succinct way of determining the structure of the collection, and spanning it, without doing something like: case(Array(x)) => for(i<-1 until dim1) { test(i) = 0.0 } case(Array(x,y)) => for(i<-1 until dim1) { for(j<-1 until dim2) { test(i)(j) = 0.0 } } case(Array(x,y,z)) => ... The dimensional values n1, n2, n3, etc... are private, right? Also, would one use the same trick of unwrapping a 2-D array into a 1-D vector when dealing with n-Dimensional objects if I want a single case to handle the traversal? Thanks in advance Bruce

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  • restrict duplicate rows in specific columns in mysql

    - by JPro
    I have a query like this : select testset, count(distinct results.TestCase) as runs, Sum(case when Verdict = "PASS" then 1 else 0 end) as pass, Sum(case when Verdict <> "PASS" then 1 else 0 end) as fails, Sum(case when latest_issue <> "NULL" then 1 else 0 end) as issues, Sum(case when latest_issue <> "NULL" and issue_type = "TC" then 1 else 0 end) as TC_issues from results join testcases on results.TestCase = testcases.TestCase where platform = "T1_PLATFORM" AND testcases.CaseType = "M2" and testcases.dummy <> "flag_1" group by testset order by results.TestCase The result set I get is : testset runs pass fails issues TC_issues T1 66 125 73 38 33 T2 18 19 16 16 15 T3 57 58 55 55 29 T4 52 43 12 0 0 T5 193 223 265 130 22 T6 23 12 11 0 0 My problem is, this is a result table which has testcases running multiple times. So, I am able to restrict the runs using the distinct TestCases but when I want the pass and fails, since I am using case I am unable to eliminate the duplicates. Is there any way to achieve what I want? any help please? thanks.

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  • C# - LINQ Including headache...

    - by ebb
    Case can have many Replies and one User, Replies can have one Case and one User, One User can have many Replies and many Cases. ObjectSet <= Case Object (IDbSet) ObjectSet.Include(x => x.User).Include(x => x.Replies).FirstOrDefault(x => x.Id == caseId); But the User Object for each Reply are not included? Only the User object for Case is Included? How would I include the User objects for the Replies too? Thanks in advance!

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  • Trying to move files with specific file names from root directory to a subfolder

    - by Justin Reagan
    Hi I'm still pretty new to powershell so I apologize if I ask something that extremely basic. I have a root directory on a tftp server that pulls down config files from routers and other equipment every night. The files are like this IPaddress_YYYYMMDD_TA5000. There is a limitation in the equipment where the files can't be set to move into the root directory on their own. What I want to do is make a powershell script that will only move the files with the TA5000 part in the filename to the sub directory and only keep the 5 most recent files. I looked but I couldn't seem to find what I would need to do to parse the file for that specific string. I already have the portion of the script to delete the files based on age that was simple. Any help on getting started would be appreciated. Edit: I forgot to post the code I was trying. Move-Item c:\tftptransferfiles c:\tftptransferfiles\sca | Where-Object {_.name -like "*TA5000*"} I keep getting a error saying that the item at C:\tftptransferfiles is in use.

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  • Why is my rspec test failing?

    - by Justin Meltzer
    Here's the test: describe "admin attribute" do before(:each) do @user = User.create!(@attr) end it "should respond to admin" do @user.should respond_to(:admin) end it "should not be an admin by default" do @user.should_not be_admin end it "should be convertible to an admin" do @user.toggle!(:admin) @user.should be_admin end end Here's the error: 1) User password encryption admin attribute should respond to admin Failure/Error: @user = User.create!(@attr) ActiveRecord::RecordInvalid: Validation failed: Email has already been taken # ./spec/models/user_spec.rb:128 I'm thinking the error might be somewhere in my data populator code: require 'faker' namespace :db do desc "Fill database with sample data" task :populate => :environment do Rake::Task['db:reset'].invoke admin = User.create!(:name => "Example User", :email => "[email protected]", :password => "foobar", :password_confirmation => "foobar") admin.toggle!(:admin) 99.times do |n| name = Faker::Name.name email = "example-#{n+1}@railstutorial.org" password = "password" User.create!(:name => name, :email => email, :password => password, :password_confirmation => password) end end end Please let me know if I should reproduce any more of my code. UPDATE: Here's where @attr is defined, at the top of the user_spec.rb file: require 'spec_helper' describe User do before(:each) do @attr = { :name => "Example User", :email => "[email protected]", :password => "foobar", :password_confirmation => "foobar" } end

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  • Client validate non-model bound checkbox while using MVC 2 jQuery Validation

    - by Justin Saraceno
    Have: Using ASP.NET MVC 2, DataAnnotationsModel based server validation, and client validation with jQuery. Anything in my model is validated perfectly on the client with jQuery based validation (jQuery.validate and MicrosoftMvcJQueryValidation.js). Need: Adding an additional HTML <input type="checkbox" id="terms" /> to my form. I need jQuery validation to require that this checkbox is checked AND somehow hook it in with whatever jQuery client script MVC is automagically controlling. Yes, I know it won't validate on the server side, but I don't need or want it to. Seems like it should be simple but I'm new to MVC, a total beginner at jQuery, and my searches have been coming up blank. Any help would be appreciated!

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  • Refactoring if/else logic

    - by David
    I have a java class with a thousand line method of if/else logic like this: if (userType == "admin") { if (age > 12) { if (location == "USA") { // do stuff } else if (location == "Mexico") { // do something slightly different than the US case } } else if (age < 12 && age > 4) { if (location == "USA") { // do something slightly different than the age > 12 US case } else if (location == "Mexico") { // do something slightly different } } } else if (userType == "student") { if (age > 12) { if (location == "USA") { // do stuff } else if (location == "Mexico") { // do something slightly different than the US case } } else if (age < 12 && age > 4) { if (location == "USA") { // do something slightly different than the age > 12 US case } else if (location == "Mexico") { // do something slightly different } } How should I refactor this into something more managable?

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  • Spring noHandlerFound

    - by Justin
    I am trying to set up my Spring MVC testing environment. But I always get this noHandlerFound error: Aug 21, 2014 4:43:25 PM org.springframework.web.servlet.DispatcherServlet noHandlerFound WARNING: No mapping found for HTTP request with URI [/restful/firstPage] in DispatcherServlet with name 'spring' Aug 21, 2014 4:47:21 PM org.springframework.web.servlet.DispatcherServlet noHandlerFound WARNING: No mapping found for HTTP request with URI [/restful/firstPage2] in DispatcherServlet with name 'spring' Aug 21, 2014 5:10:27 PM org.springframework.web.servlet.DispatcherServlet noHandlerFound WARNING: No mapping found for HTTP request with URI [/restful/index.html] in DispatcherServlet with name 'spring' I already searched for solution, but none can fix my problem. My spring mvc version: 3.1.3.RELEASE This is my web.xml: <servlet> <servlet-name>spring</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <context-param> <param-name>contextConfigLocation</param-name> <param-value> /WEB-INF/applicationContext.xml </param-value> </context-param> this is my spring-servlet.xml: <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/WEB-INF/jsp/" p:suffix=".jsp" /> this is my applicationContext.xml: <context:annotation-config /> <context:component-scan base-package="test.spring" /> <mvc:annotation-driven /> <mvc:resources mapping="/index.html" location="/index.html" /> <mvc:view-controller path="/firstPage" /> This is my Controller: package test.spring; .... @Controller @RequestMapping("/") public class FirstController { @RequestMapping(value = "firstPage2", method = RequestMethod.GET) public String showFirstPage(Map<String,Object> model){ return "firstPage"; } } My server is tomcat 7, there is no error and warning when it is deployed. I also tried this with no luck: <mvc:default-servlet-handler/> Before I start Spring MVC, I can access index.html

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  • Dynamic External Program in debug tab vs2008

    - by Justin Holbrook
    I am playing with NServiceBus using the generic host; specifically I'm working on having 2 different configurations, a debug configuration that logs to the console and a release version that logs to metabase (I'm using VS2008). I had just made some code changes (commented out a logging statement), but it was still showing in the log when I ran my solution. I eventually figured out that I had switched configuration to release, made my change, then built. I think the change isn’t being picked up because in the debug tab of my project properties I have the following (abbreviated) path to the generic host: C:...\Inventory\bin\Debug\NServiceBus.Host.exe Notice it specifically points to the debug directory. So basically even though I’m in release config it’s firing up the host in the debug directory which I think is then using the dll's in the debug directory (which is why my changes didn't get picked up). I tried to come up with a workaround, but have been unsuccessful. VS Macros (like $(Configuration)) and relative pathing are not allowed here. http://connect.microsoft.com/VisualStudio/feedback/details/422223/relative-path-not-allowed-in-c-project-debug-properties-window Any ideas? I hope this doesn’t require a custom build task.

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  • facebook and twitter buttons doesn't work

    - by Justin
    I am building a website in dreamweaver cs5. for some reason, the facebook like button and twitter share as well as follow button doesn't work. facebook like button shows nothing. (in the area, chrome says page cannot be found), twitter buttons show the hyperlink tweet and it tweets but the icon doesn't show up. The code for both are generated from facebook and twitter itself. I haven't hosted the site yet. I and coding and previewing it. Is that the reason for them not to work? I also tried addthis.com widget. It didn't show up as it should have. Please help! Many thanks.

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  • Avoiding sub-type selection in view code

    - by John Donoghue
    Hi, I have some code where the model contains some classes like (vb.net pseudocode, but could be any OO language): Enum AttributeType Boolean Date String End Enum MustInherit Class Attibute Must Override Function Type As AttributeType End Class Class BooleanAttribute: Attribute Function Type As AttributeType Return AttributeType.Boolean End Function End Class And the view contains some code like: Select Case AttributeType Case Boolean //Display checkbox control Case Date //Display date picker control Case String //Display textbox control End Select I don't really like the code in the view, for the hopefully obvious reasons (what happens when I get a new attribute type etc). My question is, how should I replace it? I could easily add a method to the concrete classes, but that pollutes the model with UI stuff so that's a horrible idea. I could move the select into a factory, but that seems to be just hiding the problem. Can anybody advise a better approach?

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  • Importing data and keeping ids and relationships

    - by Justin Hamade
    I am working on cleaning up a mess that another programmer started. The created 2 identical databases for different locations but that obviously caused major issues. They are using cakePHP and there are quite a few relationships. I am pretty sure I will have to write a script to import that data from on DB to the other and keep all the relationships but was wondering if there is an easier way to do it.

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  • How can I pass a type as a parameter in scala?

    - by rsan
    I'm having a really hard time trying to figure out how can I store or pass a type in scala. What I want to achive is something like this: abstract class Foo( val theType : type ) object Foo{ case object Foo1 extends Foo(String) case object Foo2 extends Foo(Long) } So at some point I can do this: theFoo match{ case String => "Is a string" case Long => "Is a long" } and when obtaining the object being able to cast it: theFoo.asInstanceOf[Foo1.theType] Is this possible? If is possible, is a good aproach? What I'm trying to achieve ultimately is writing a pseudo schema for byte stream treatment. E.g if I have an schema Array(Foo1,Foo1,Foo2,Foo3,Foo1) I could parse Arrays of bytes that complain with that schema, if at some point I have a different stream of bytes I could just write a new schema Array(Foo3, Foo4, Foo5) without having to reimplement parsing logic. Regards,

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  • stick button to bottom of element

    - by dzona
    Is there any way to stick child button element to bottom of parent element when number of child elements vary? Parent element is fixed height, and could be scrolled vertically in case of child overflow. In that case, button should be at the end of child list, but in case there is no children, or children size don't push parent element to overflow, it should be at bottom of parent element. Is there pure css solution for this? Thanks

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  • WPF TextBox - don't hide the selection

    - by Justin R
    WPF's TextBox (System.Windows.Controls.TextBox) appears to highlight selected text only when it has the focus. I need to make a TextBox continue to show the selection when focus is lost. In a standard Win32 EDIT control I could achieve this with ES_NOHIDESEL. How can I get the equivalent in WPF?

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  • Please help me get my content div to get an auto height from absolutely positioned element

    - by Justin Hollender
    I need some help with a CSS layout. It is set up like this: +--------------------+ | | | header | |-| |--------------| | |nav| content | | | | | | | | | | | | | | footer | +--------------------+ So, the nav is supposed to be floating above all the main page content. That's why I have it set to be absolutely positioned. The issue is that the nav items are dynamic, without a set height. Right now, the nav expands past the content. How can I fix it so that the content will have an auto height based off the nav? Thanks in advance.

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  • Querying for a unique value based on the aggregate of another value while grouping on a third value

    - by Justin Swartsel
    So I know this problem isn't a new one, but I'm trying to wrap my head around it and understand the best way to deal with scenarios like this. Say I have a hypothetical table 'X' that looks like this: GroupID ID (identity) SomeDateTime -------------------------------------------- 1 1000 1/1/01 1 1001 2/2/02 1 1002 3/3/03 2 1003 4/4/04 2 1004 5/5/05 I want to query it so the result set looks like this: ---------------------------------------- 1 1002 3/3/03 2 1004 5/5/05 Basically what I want is the MAX SomeDateTime value grouped by my GroupID column. The kicker is that I DON'T want to group by the ID column, I just want to know the 'ID' that corresponds to the MAX SomeDateTime. I know one pseudo-solution would be: ;WITH X1 as ( SELECT MAX(SomeDateTime) as SomeDateTime, GroupID FROM X GROUP BY GroupID ) SELECT X1.SomeDateTime, X1.GroupID, X2.ID FROM X1 INNER JOIN X as X2 ON X.DateTime = X2.DateTime But this doesn't solve the fact that a DateTime might not be unique. And it seems sloppy to join on a DateTime like that. Another pseudo-solution could be: SELECT X.GroupID, MAX(X.ID) as ID, MAX(X.SomeDateTime) as SomeDateTime FROM X GROUP BY X.GroupID But there are no guarantees that ID will actually match the row that SomeDateTime comes from. A third less useful option might be: SELECT TOP 1 X.GroupID, X.ID, X.SomeDateTime FROM X WHERE X.GroupID = 1 ORDER BY X.SomeDateTime DESC But obviously that only works with a single, known, GroupID. I want to be able to join this result set on GroupID and/or ID. Does anyone know of any clever solutions? Any good uses of windowing functions? Thanks!

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  • iPhone to Java EE remoting

    - by Justin Simonelis
    Hi there! I was looking for some opinions on the best remote method invocation practices when developing iPhone applications that communicate with Java (java EE) servers. Many iphone applications these days typically talk to a server back end. I typically prefer to write my servers in java using some Spring libraries. So far I have not found or stuck to a definitive practice for iphone-java server communication. What are some technical solutions and libraries that you have used to implement this kind of client-server communication? One thing I always keep in mind is that I want the communication protocols to be simple so that multiple platforms can be added for example, in future adding Android and possibly Blackberry clients, that can use the same protocol to talk to the server.

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  • In Maven 2, Is it possible to specify a mirror for everything, but allow for failover to direct repo

    - by Justin Searls
    I understand that part of the appeal of setting up a Maven mirror, such as the following: <mirror> <id>nexus</id> <name>Maven Repository</name> <mirrorOf>*</mirrorOf> <url>http://server:8081/nexus/content/groups/public</url> </mirror> ... is that the documentation states, "You can force Maven to use a single repository by having it mirror all repository requests." However, is this also an indication that by having a * mirror set up each workstation [b]must[/b] be forced to go through the mirror? I ask because I would like each workstation to failover and connect directly to whatever public repositories it knows about in the event that Nexus can't resolve a dependency or plugin. (In a perfect world, each developer has the access necessary to add additional proxy repositories as needed. However, sometimes that access isn't available; sometimes the Nexus server goes down; sometimes it suffers a Java heap error.) Is this "mirror but go ahead and connect directly to public repos" failover configuration possible in Maven 2? Will it be in Maven 3?

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