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  • remove contact's photo

    - by Varand Tin
    Hey guys, in order to remove contact's photo, which way is correct? 1) to update and set Photo.PHOTO to ""/"NULL" , or 2) to update and set Photo.MIMETYPE to ""/"NULL" or 3) to update and set Data.MIMETYPE to ""/"NULL" ? I wanted to mention also that I insert photos from my app by the following way: cr.insert(ContactsContract.Data.CONTENT_URI, photoValues); Please also tell me "" is better or null? (in updating case) Thanks a lot.

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  • How to prove worst-case number of inversions in a heap is O(nlogn)?

    - by Jacques
    I am busy preparing for exams, just doing some old exam papers. The question below is the only one I can't seem to do (I don't really know where to start). Any help would be appreciated greatly. Use the O(nlogn) comparison sort bound, the theta(n) bound for bottom-up heap construction, and the order complexity if insertion sort to show that the worst-case number of inversions in a heap is O(nlogn).

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  • Include Obj-C++ header from C++ source file

    - by Schwitzgabel
    Consider the followng situation: MacFont.h struct MacFont : Font { // ... NSFont* font; }; MacFont will be implemented in MacFont.mm FontEngine.cpp: #if defined(OS_MAC) #include "MacFont.h" #elif // ... #endif //... In order to make it compiling, I should rename FontEngine.cpp to FontEngine.mm but I'm not allowed to. So what now?

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  • Sql query number of occurance

    - by phenevo
    Hi, I wanna to have query: Select cars.* from cars where cars.code in ( select carCode from articles where numberofrecords with this car (it is not a column) >1 and Accepted=1 order by date ) How to write it?

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  • date in future for Rails

    - by Adnan
    Hello, I am trying to make a validation that will validate that the entered date is in future and that the selected date is in the next 7 days. In order to validate if the date is in future I use; valid_until.future? and this one works fine, but to make a validation to check if the date selected is withing 7 days from now?

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  • how do I instrospect appengine's datastore models?

    - by python for ever
    in order to dynamically create a form, i have to find the property types of a model's properties at runtime. appengine docs says that Model.properties() will return a dictionary of properties name and their class type. when i use this method in my code, only the name is returned and the classtype value is always empty.

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  • Best way to update record X when Y is inserted

    - by Saif Bechan
    I have a huge table that is mainly used for backup and administrative purposes. The only records that matters is the last inserted record. On every hit to order by time inserted is just too slow. I want keep a separate table with the last inserted id. In PHP I now insert, get last inserted id, and update the other table. Is there a more efficient way to do this.

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  • How to make c# form mirrored?

    - by pakita883
    Hello, I have some text in a web browser on my form in visual studio, this form is going to be displayed on a big screen and it's content need to be mirrored(flipped) in order to be seen on the other place through mirror. It is not rotation actually. I know it is possible to do it with images, but it is not applicable in my case, because browser's document is scrolling. Any help will be greatly appreciated!

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  • acts_as_list with has_and_belongs_to_many relationship

    - by mculp
    I've found an old plugin called acts_as_habtm_list - but it's for Rails 1.0.0. Is this functionality built in acts_as_list now? I can't seem to find any information on it. Basically, I have an artists_events table - no model. The relationship is handled through those two models specifying :has_and_belongs_to_many How can I specify order in this situation?

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  • Information not getting into the controller from the view. (authologic model)

    - by Gotjosh
    Right now I'm building a project management app in rails, here is some background info: Right now i have 2 models, one is User and the other one is Client. Clients and Users have a one-to-one relationship (client - has_one and user - belongs_to which means that the foreign key it's in the users table) So what I'm trying to do it's once you add a client you can actually add credentials (add an user) to that client, in order to do so all the clients are being displayed with a link next to that client's name meaning that you can actually create credentials for that client. So in order to do that I'm using a helper the link to helper like this. <%= link_to "Credentials", {:controller => 'user', :action => 'new', :client_id => client.id} %> Meaning that he url will be constructed like this: http://localhost:3000/clients/2/user/new By creating the user for the client with he ID of 2. And then capturing the info into the controller like this: @user = User.new(:client_id => params[:client_id]) The weird thing is that EVERY other information BUT the client id it's getting passed and the client ID should be passed with the params[:client_id]. Any ideas? Perhaps it may have something to do with the fact that model User has "acts_as_authentic" because I'm using authologic for it? Model: class User < ActiveRecord::Base acts_as_authentic belongs_to :client end Controller: def create @user = User.new(:client_id => params[:client_id]) if @user.save flash[:notice] = "Credentials created" else flash[:error] = "Credentials failed" end end View: <% form_for @user do |f| % <p> <%= f.label :login, "Username" %> <%= f.text_field :login %> </p> <p> <%= f.label :password, "Password" %> <%= f.password_field :password %> </p> <p> <%= f.label :password_confirmation, "Password Confirmation" %> <%= f.password_field :password_confirmation %> </p> Let me know if this is sufficient or need more. <%= f.submit "Create", :disable_with => 'Please Wait...' %> <% end %>

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  • SQL Join Statement Issue

    - by coffeeaddict
    I'm tring to grab all fields from the latest Cash record, and then all fields from the related TransactionInfo record. I can't quite get this to work yet: select t.*, top 1 c.* from Cash c inner join TransactionInfo t on c.TransactionID = t.id order by createdOn desc

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  • Do I need JDK or only JRE?

    - by Camran
    I use Solr in my website, and now I am about to configure my VPS account. I am at the stage where I need to install java in order to make Solr work. Now, I only plan on running solr, and using it as it is (I have no java programming skills at all), so my Q is, do I need the entire JDK which includes JRE, or is JRE enough? Thanks BTW: My server OS is Linux (ubuntu 9.10). Thanks

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  • How is the result of openssl_sign() encoded?

    - by Bozho
    The docs about openssl_sign() say that the signature is returned in the passed string argument. My question is - how is it encoded? Base64, Hex-string, anything else? I don't have php installed and I have to use this PHP code I was given simply in order to verify whether my Java implementation is correct, so don't ask me "have you tried it" ;)

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  • Users and roles in context

    - by Eric W.
    I'm trying to get a sense of how to implement the user/role relationships for an application I'm writing. The persistence layer is Google App Engine's datastore, which places some interesting (but generally beneficial) constraints on what can be done. Any thoughts are appreciated. It might be helpful to keep things very concrete. I would like there to be organizations, users, test content and test administrations (records of tests that have been taken). A user can have the role of participant (test-taker), contributor of test material or both. A user can also be a member of zero or more organizations. In the role of participant, the user can see the previous administrations of tests he or she has taken. The user can also see a test administration of another participant if that participant has given the user authorization. The user can see test material that has been made public, and he or she can see restricted content as a participant during a specific administration of a test for which that user has been authorized by an organization. As a member of an organization, the user can see restricted content in the role of contributor, and he or she might or might not also be able to edit the content. Each organization should have one or more administrators that can determine whether a member can see and edit content and determine who has admin privileges. There should also be one or more application-wide superusers that can troubleshoot and solve problems. Members of organizations can see the administrations of tests that the participants concerned have authorized them to see, and they can see anonymous data if no authorization has been given. A user cannot see the test results of another user in any other circumstances. Since there are no joins in the App Engine datastore, it might be necessary to have things less normalized than usual for the typical SQL database in order to ensure that queries that check permissions are fast (e.g., ones that determine whether a link is to be displayed). My questions are: How do I move forward on this? Should I spend a lot of time up front in order to get the model right, or can I iterate several times and gradually roll in additional complexity? Does anyone have some general ideas about how to break things up in this instance? Are there any GAE libraries that handle roles in a way that is compatible with this arrangement?

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  • Changing what song is being played in a player (Flash), based on other buttons on the page (help!)

    - by janoChen
    I want to place a player (flash) in the top-right corner of a page and that player will change it songs based on what play button is clicked (they are in the center of the page). Do I have to use ActionScript in order to accomplish that? If I have to, how? I want something like hits: Each time the user clicks one of the 10 buttons the song playing in the player in the top-right should change into the selected song. Thanks in advance!

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  • Count of Sums possibly using group_by

    - by Daniel Johnson
    Say you have a user table and an order table which references user (user has_many orders) and contains an item count field. How could you efficiently ask "how many uses ordered how many items?" That is, to generate something along the lines of: Number of users | sum of items ------------------------------- 5 users | 1 item 4 users | 5 items 1 user | 7 items Thanks in advance.

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  • While remote deubgging how are the pdb located (VS 2008)

    - by Saar
    When the deubgger is attached to a process on remote server - What locations are searched for the pdb? In what order? (e.g. is it searched on the remote server (debuggee) or on the local client (deubger)) When I use the deubgger to manually load pdb file from specific location - is the deubbger looking for the file locally or is it the remote debugger monitor looking for the file on the? Is there any article that describes that process?

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  • How do I access the array submit() calls in the dom?

    - by Alex
    I want to grab all the inputs inside a form, in order to submit them. The point of this is to use jquery's ajax to submit a dynamically sized form. Surely there must be an array inside the dom somewhere which i can just do something like... docment.forms['form'].elements which only lists inputs for that form, meaning I can loop through them and grab their values to play around with?

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  • How to compare two vectors, in C++

    - by Vincenzo
    This is my code: #include <algorithm> void f() { int[] a = {1, 2, 3, 4}; int[] b = {1, 2, 100, 101}; // I want to do something like this: // int* found = compare(a[0], a[3], b[0]); // in order to get a pointer to a[2] } Maybe I missed this algorithm in the manual… Please help :)

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