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  • How to map LINQ EntitySet to List property in property setter?

    - by jlp
    In my model I have these entities: public interface IOrder { string Name {get;set;} List<IProduct> OrderedProducts {get;set;} } public interface IProduct {} In partial class generated by linq-to-sql I map these properties on my entity properties: public partial class Order : IOrder { List<IProduct> OrderedProducts { get { return this.L2SQLProducts.Cast<IProduct>.ToList(); } set { this.L2SQLProducts = ??? } } } How should setter look like?

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  • HQL 'parsename' equivalent

    - by jaume
    I've discovered PARSENAME function as a good choice to order IP address stored in Database. Here there is an example. My issue is I'm using Hibernate with named queries in a xml mapping file and I am trying to avoid the use of session.createSQLQuery(..) function. I'm wondering if exists any PARSENAME equivalent function for HQL queries. I'm searching for it and cannot find anything. Many thanks.

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  • Sybase ASA 8.0 trigger how to determine whether to insert ,update,delete operate.

    - by guaike
    Follow is my trigger of Sybase ASA 8.0 script: Create trigger dba.test after insert,delete,update order 1 on DBA.tb_press referencing old as _old new as _new for each row begin --How to detect deleteOperate,updateOperate? if deleteOperate then insert into syncLog(tableName,keyId,version,operate) select tb_press,_old.id,1,'delete' end if; end how to determine whether to insert ,update,delete operate.

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  • Best Format for a Software Engineer's Resume

    - by Adam Haile
    I am looking for good, objective ideas and examples of a resume for a Software Engineer. By all means, post a link to your own resume if you are comfortable with doing so. Mostly I am looking at how it should be formatted and what kind of information should be included (and in what order on the resume.)

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  • Which is the best pick?

    - by Daniel
    Hi, considering I have experience with Java SE: which language should I learn(and is best for that purpose) in order to build web applications some day with it? I have been contemplating PHP and Java EE. The latter does indeed seems as an obvious choice given my Java SE knowledge. But how does it fares in comparison with PHP and how good is it for the aforementioned purpose? If there is a better language for this purpose, feel free to recommend it. Thank you.

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  • A quick way to map unordered list of longs to buffer location ?

    - by alhazen
    I have a large number of points (indexed by long) that are processed by multiple threads and I'm using a buffer to hold the output results in order. As the number of points processed is huge, what would be an efficient way to map the indexes of the points to the corresponding ordered position in the buffer ? Example: long bufferIndex bufferIndex index (if BufferSize = 2) (if BufferSize = 4) ---------------------------------------------- 2938 0 0 2939 1 1 2941 1 3 2940 0 2 Thanks.

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  • Issues with rake after installing FreeImage on Mac OS X 10.6

    - by Das Ist Nicht
    I am trying to setup my dev environment on my Mac (running Mac OS X 10.6) for my work's rails application. It requires FreeImage and now that I have installed that, I run rake db:migrate and receive the following error: dyld: lazy symbol binding failed: Symbol not found: _FreeImage_SetOutputMessage Referenced from: /Users/username/.ruby_inline/Inline_ImageScience_cdab.bundle Expected in: flat namespace dyld: Symbol not found: _FreeImage_SetOutputMessage Referenced from: /Users/username/.ruby_inline/Inline_ImageScience_cdab.bundle Expected in: flat namespace Trace/BPT trap I have tried searching around for the error but am at a complete loss as to where to go or what to try in order to resolve this issue.

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  • Rails: three most recent records by unique belongs_to associated record

    - by Dennis Collective
    class User has_many :comments end class Comment belongs_to :user named_scope :recent, :order => 'comments.created_at DESC' named_scope :limit, lambda { |limit| {:limit => limit}} named_scope :by_unique_users end what would I put in the :by_unique_users so that I can do Comment.recent.by_unique_users.limit(3), and only get one comment per user on sqlite named_scope :by_unique_user, :group = "user_id" works, but makes it freak out on postgres, which is deployed on production PGError: ERROR: column "comments.id" must appear in the GROUP BY clause or be used in an aggregate function

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  • Resort (reorder) table data

    - by Dave Jarvis
    What is the fastest way to reorder (resort) a table? In MySQL, you can do: CREATE TABLE table2 LIKE table1; INSERT INTO table2 SELECT * FROM table1 ORDER BY by name; DROP TABLE table1; RENAME TABLE table2 TO table1; What about PostgreSQL? Is there a faster way?

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  • What is wrong with this attempt of sending a break-signal?

    - by Jook
    I have quite a headache about this seemingly easy task: send a break signal to my device, like the wxTerm (or any similar Terminal application) does. This signal has to be 125ms long, according to my tests and the devices specification. It should result in a specific response, but what I get is a longer response than expected, and the transmitted date is false. e.g.: what it should respond 08 00 81 00 00 01 07 00 what it does respond 08 01 0A 0C 10 40 40 07 00 7F What really boggles me is, that after I have used wxTerm to look at my available com-ports (without connecting or sending anything), my code starts to work! I can send then as many breaks as I like, I get my response right from then on. I have to reset my PC in order to try it again. What the heck is going on here?! Here is my code for a reset through a break-signal: minicom_client(boost::asio::io_service& io_service, unsigned int baud, const string& device) : active_(true), io_service_(io_service), serialPort(io_service, device) { if (!serialPort.is_open()) { cerr << "Failed to open serial port\n"; return; } boost::asio::serial_port_base::flow_control FLOW( boost::asio::serial_port_base::flow_control::hardware ); boost::asio::serial_port_base::baud_rate baud_option(baud); serialPort.set_option(FLOW); serialPort.set_option(baud_option); read_start(); std::cout << SetCommBreak(serialPort.native_handle()) << std::endl; std::cout << GetLastError() << std::endl; boost::posix_time::ptime mst1 = boost::posix_time::microsec_clock::local_time(); boost::this_thread::sleep(boost::posix_time::millisec(125)); boost::posix_time::ptime mst2 = boost::posix_time::microsec_clock::local_time(); std::cout << ClearCommBreak(serialPort.native_handle()) << std::endl; std::cout << GetLastError() << std::endl; boost::posix_time::time_duration msdiff = mst2 - mst1; std::cout << msdiff.total_milliseconds() << std::endl; } Edit: It was only necessary to look at the combo-box selection of com-ports of wxTerm - no active connection was needed to be established in order to make my code work. I am guessing, that there is some sort of initialisation missing, which is done, when wxTerm is creating the list for the serial-port combo-box.

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  • Is there a common practice how to make freeing memory for Garbage Collector easier in .NET?

    - by MartyIX
    I've been thinking if there's a way how to speed up freeing memory in .NET. I'm creating a game in .NET (only managed code) where no significant graphics is needed but still I would like to write it properly in order to not to lose performance for nothing. For example is it useful to assign null value to objects that are not longer needed? I see this in a few samples over Internet. Thanks for answers!

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  • Web Service Authentication in C# Web Application i.e Details on Digest and Basic Authentication

    - by NSK
    Details on all Web Service Authentication methods and How to apply those?? i.e Way to apply Basic and Digest Authentication in C# Web Application. More: I'm creating a Web Service and want to deploy it on IIS 5.0. In order to authenticate user I want to use Digest Authentication. How this is done? The authentication should contain some through which the user is checked inside database for authentication and then if valid user then return success or else failure...

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  • Find a regular expression that matches a string?

    - by Mirai
    I need a model for finding all of the regular expressions that would match a particular string. Basically, I need an algorithm for doing what I do to generate a regex search string from some pattern. My purpose for this to create a list of potential regular expressions from a selection of text and order that list from least specific (i.e. string of characters with abitrary length) to most specific (i.e. the string itself) to be used in text editor.

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  • Filtering python string through external program

    - by Peter
    What's the cleanest way of filtering a Python string through an external program? In particular, how do you write the following function? def filter_through(s, ext_cmd): # Filters string s through ext_cmd, and returns the result. # Example usage: # filter a multiline string through tac to reverse the order. filter_through("one\ntwo\nthree\n", "tac") # => returns "three\ntwo\none\n" Note: the example is only that - I realize there are much better ways of reversing lines in python.

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  • Groovy list.sort by first, second then third elements

    - by Ying
    Hi, I have a groovy list of lists i.e. list = [[2, 0, 1], [1, 5, 2], [1, 0, 3]] I would like sort it by order of the first element, then second, then third. Expected assert list == [[1, 0, 3], [1, 5, 2], [2, 0, 1]] I started with list = list.sort{ a,b -> a[0] <=> b[0] } but that only sorts the first element. How do you finish? Thanks

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  • Arrange points in sequence.

    - by Himadri
    I have some points in 3D which are in a single plane. I want to arrange them in clock wise or counter clockwise order. The points can create a concave or convex polygon in a single plane. Can any body give any suggestions?

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  • Junit run not picking file src/test/resources. For file required by some dependency jar

    - by saddy-dj
    Hi, I m facing a issue where test/resource is not picked,but instead jar's main/resource is picked Scenario is like : Myproject src/test/resources--- have config.xml w which should be needed by abc.jar which is a dependecy in Myproject. When running test case for Myproject its loading config.xml of abc.jar instead of Myproject test/resources. - I need to know order in which maven pick resources. - Or wat im trying is not possible. Thanks.

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  • Help with XML SerializableDictionary in C#

    - by psilos
    Hi I am using the class public class SerializableDictionary : Dictionary, IXmlSerializable in order to serialize a dictionary. However it doesnt work when as values I have collelctions (eg List) or tyes other than the primitive types (eg. int, double, string....). My question is which types the TKey, TValue imply or can hold, and if there is way to have a serializable dictionary which collections as values.

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  • What are the books about Open-Source that everyone interested in should read?

    - by Edu Zamora
    Currently I am working and running my first Open-Source project and though I am quite happy how things are working so far, I have the feeling that a lot of things could be done better. So, what books about Open-Source would you recommend me in order to help filling this gap and making things better every day? What are the books that influenced you the most? I am especially interested in: - How to organize and run an Open-Source project - Best practices - Manage and involve users and developers - How to announce and do the releases - Legal issues

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