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  • KVM vs Hyper-V. Which hypervisor is best for windows guests?

    - by user198851
    I am currently testing openstack for windows guests (XP and 7). I have deployed openstack "all in one" on system with following specs Processor corei5. (4 physical cores and 8 Threads with HT Technology) RAM 8 GB. HD 500 GB. I have created 4 windows xp guests with 512MB RAM and 1VCPU. On each windows guest i have installed visual studio 2008 only. In nova.conf CPU Over-Commit ratio is 2 for better performance (as mentioned in openstack operation guide). Using KVM as hyerpvisor. I have observed poor performance when simultaneously using visual studio in four windows instances. How i can improve performance ? Should i use KVM or Hyper-V ? or any other suggestion ?

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  • C# Dictionary<> and mutable keys

    - by Pierreten
    I was told that one of the many reasons strings were made immutable in the C# spec was to avoid the issue of HashTables having keys changed when references to the string keys altered their content. The Dictionary< type allows reference types to be used as a key. How does the dictionary avoid the issue of altered keys that lead to "misplaced" values? Is there a memberwise clone made of an object when used as a key?

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  • Refresh SWC in FlexBuilder after publishing

    I am using a SWC that was published from Flash CS3 in an Actionscript project in FlexBuider. The problem is that every time I make a change and re-publish the SWC the changes I made are not immediately recognized back in FlexBuilder. In order to have newly published SWC recognized I have to remove the reference to the SWC from the library path and then add it back again. This is tedious. Is there a better way?

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  • accessing id property via javascript

    - by webzide
    Dear experts Is there a way to access the ID of an dom element? I don't mean using the getElementById attribute to find out a array of objects. Bascially I already know the DOM element and that object reference is at hand. All I need is to access the ID property. I know something like if(element.id==value) won't work. Thanks in advance.

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  • Accessing custom user profile fields in CCK

    - by Nick Lowman
    I'm probably going about this the wrong way but... I’ve added a field to the User Profile called profile_real_name which is required by the user. Is there a way to access the details in CCK? For example in CCK when creating a new field I can access the user’s username with the ‘User reference’ Field type and setting the ‘Widget type’ to ‘Autocomplete text field’. Can I do the same with my real name field? Many thanks

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  • Oracle for the SQL Server books?

    - by MattK
    I am looking for a reference for a SQL Server DBA who has to come up to speed on basic Oracle 11 DBA tasks: backup, recovery, user administration, etc. There seems to be some material on the web for the reverse: Oracle - SQL Server, but the only potentially useful resource I have found in a few searches is yet to be published: http://www.amazon.com/Oracle-Database-Administration-Microsoft-Osborne/dp/0071744312 Can anyone provide references to something currently available?

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  • Appengine Model SelfReferenceProperty and parent child relationship

    - by GeekTantra
    I have a scenario in which I need a self reference property as follow: class Post(db.Model): creator = db.UserProperty() post_title = db.StringProperty(required=True) post_status = db.StringProperty(required=True, choices=['draft', 'published']) post_parent = db.SelfReferenceProperty() Now, I want ensure that an entity shouldn't be its own parent and a child of an entity cannot be its parent. How can I ensure this kind of a relationship in the PostForm model form and the Post model.

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  • .net 4.0 GAC can't refer

    - by santose
    I have installed VS 2010 and builded a project and added the assembly in GAC 4.0. But How to refer this assembly in a application. I have created new application and going to add - reference I couldn't find the assembly which i was installed. But its their if we seen thro' the physical path of the GAC.

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  • Install Mozilla Thunderbird on NAS [on hold]

    - by user2295350
    I have a small office with 3 computers running Linux Ubuntu. All the data are stored in a NAS drive (WD MyBook Live). I would like to - somehow - be able to access the email archives as well from each of these computers. For now, I don't really care if it would be possible for each user to access the email archives simultaneously (although that would be ideal). I have read about Portable Thunderbird over Wine as well as installing IMAP on the NAS drive. However, not only I haven't found a complete guide on how to do that but I am also not sure whether either of these solutions would work for me anyway.

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  • Anyone heard about Sharpkit?

    - by Shimmy
    Has anyone heard about SharpKit? I am about to start a new web project, and I am doubting whether to use sharpkit. From my browsing around the site and the documentation there, it looks really so seducing, does anyone have experience with it? I even played with it a little bit on their amazing online-IDE website (there are built-in templates that reference it), and I found it awsome. I would want to hear any of yours long-range experience.

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  • empty sharepoint user profile property throw an exception

    - by James123
    I have a user profile property. user not assigned any value that property. If I use below code. It is thorwing exception " object reference not set to an instance of an object " userprof["OptOut"].ToString() I tried all types like if (userprof["OptOut"] != null) OR if(userprof["OptOut"].Value != null) nothing worked out for me. Here userProf object has value. userprof["OptOut"].Value is null How to handle this?

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  • SQL: Is there a more efficient way to calculate elapsed hours, minutes, seconds?

    - by hamlin11
    I'm using Computed Columns to provide me with the following information: Hours, Minutes, and Seconds between a Start DateTime and Finish DateTime (Where Minutes and Seconds are between 0 and 59 and Hours can be any value 0 or greater) Computed Column for Seconds: datediff(second,[Start],[Finish]) % 60 Computed Column for Minutes: floor(datediff(second,[Start],[Finish]) / 60.0) % 60 Computed Column for Hours: floor(datediff(second,[Start],[Finish]) / 3600.0) Here's the table for reference Note: I'm also calculating TotalElapsedSeconds, TotalElapsedMinutes, and TotalElapsedHours in other computed columns, but those are easy. I just feel like I might be missing out on a nice built in function in SQL.

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  • Javascript: How to detect if a word is highlighted

    - by fterh
    I'm writing a Firefox addon that is triggered whenever a word is highlighted. However I need a script that detects when a word is highlighted, and I'm stuck. An example would be nytimes.com (when you're reading an article and you highlight a word, the reference icon pops up). However the nytimes.com script is super complex. I'm 16 and not much of a programmer, so that is definitely way out of my league.

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  • Reading a file from an alternate location

    - by Highstaker
    I have a certain file (data.abc) located in, say, my home folder. I make a copy of it to another location (for example, "/mnt/ramtemp/"). Whenever the file in my home folder is accessed by any process, I want it to be read not from home folder, but from "/mnt/ramtemp/". As you might have guessed from the path of the latter, it is where I mount the ramfs. So, basically, I want a process to access not the file on my HDD (which is slower), but its copy on ramfs (which is way faster). At the same time, I want the file data.abc to remain in my home folder under that name, I don't want to rename or delete it. Is there any way I could guide the system to redirect the processes to read the file from alternative location whenever they try to read it from home folder?

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  • ASP.NET app on Apache Mono Ubuntu compiler error as log4net is unable to be found

    - by Jingo
    I'm trying to get a vulnerable practice ASP.NET web application (WebGoat.NET) installed on Apache Mono on Ubuntu. I've followed this guide and it all went smoothly; however, whenever I try to run the app I get this error: The type or namespace name `log4net' could not be found. Are you missing a using directive or an assembly reference? Log4net.dll is in the lib folder of the application directory. It's also in the /usr/lib/mono/gac directory. I'm not sure where else it needs to be. Any suggestions? Thanks!

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  • JQuery UI: is it possible to know where an object has been dropped?

    - by Jack Duluoz
    Hi, what I want to do is to know where (not in terms of position (x, y), but a reference to the DOM element) an object was dropped. I have a grid made up with divs where you can drop various items and I need to know which div on the grid was the item dropped on (getting its id would be fine). The callback function function(event, ui) { //code here } has just that ui object who doesn't apparently contain any information about this, but only about the draggable item or its helper.

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  • Derived template override return type of member function C++

    - by Ruud v A
    I am writing matrix classes. Take a look at this definition: template <typename T, unsigned int dimension_x, unsigned int dimension_y> class generic_matrix { ... generic_matrix<T, dimension_x - 1, dimension_y - 1> minor(unsigned int x, unsigned int y) const { ... } ... } template <typename T, unsigned int dimension> class generic_square_matrix : public generic_matrix<T, dimension, dimension> { ... generic_square_matrix(const generic_matrix<T, dimension, dimension>& other) { ... } ... void foo(); } The generic_square_matrix class provides additional functions like matrix multiplication. Doing this is no problem: generic_square_matrix<T, 4> m = generic_matrix<T, 4, 4>(); It is possible to assign any square matrix to M, even though the type is not generic_square_matrix, due to the constructor. This is possible because the data does not change across children, only the supported functions. This is also possible: generic_square_matrix<T, 4> m = generic_square_matrix<T, 5>().minor(1,1); Same conversion applies here. But now comes the problem: generic_square_matrix<T, 4>().minor(1,1).foo(); //problem, foo is not in generic_matrix<T, 3, 3> To solve this I would like generic_square_matrix::minor to return a generic_square_matrix instead of a generic_matrix. The only possible way to do this, I think is to use template specialisation. But since a specialisation is basically treated like a separate class, I have to redefine all functions. I cannot call the function of the non-specialised class as you would do with a derived class, so I have to copy the entire function. This is not a very nice generic-programming solution, and a lot of work. C++ almost has a solution for my problem: a virtual function of a derived class, can return a pointer or reference to a different class than the base class returns, if this class is derived from the class that the base class returns. generic_square_matrix is derived from generic_matrix, but the function does not return a pointer nor reference, so this doesn't apply here. Is there a solution to this problem (possibly involving an entirely other structure; my only requirements are that the dimensions are a template parameter and that square matrices can have additional functionality). Thanks in advance, Ruud

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  • How to refer to enum constants in c# xml docs

    - by Bruno Martinez
    I want to document the default value of an enum typed field: /// <summary> /// The default value is <see cref="Orientation.Horizontal" />. /// </summary> public Orientation BoxOrientation; The compiler warns that it couldn't resolve the reference. Prefixing F: or M: silences the compiler, but E: also does, so I'm unsure what prefix is correct.

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  • join 03 table in the database codeIgniter

    - by python
    with my table. person_id serial NOT NULL, firstname character varying(30) NOT NULL, lastname character varying(30), email character varying(50), username character varying(20) NOT NULL, "password" character varying(100) NOT NULL, gender character varying(10), dob date, accesslevel smallint NOT NULL, company_id integer NOT NULL,//Reference to table company position_id integer NOT NULL,//Reference to table position company_id serial NOT NULL, company_name character varying(80) NOT NULL, description character varying(255), address character varying(100) NOT NULL, In my controller ........................ // load data $persons = $this->person_model->get_paged_list(10,0); // generate table data $this->load->library('table'); $this->table->set_empty("&nbsp;"); $this->table->set_heading('No', 'FirstName', 'LastName','E-mail','Company''Gender', 'Date of Birth', 'Actions'); foreach ($persons as $person){ $this->table->add_row(++$i, $person->firstname, $person->lastname, $person->email, $person->company_name, //HOW CAN I GOT THE POSITION TITLE ?, strtoupper($person->gender)=='M'? 'Male':'Female', date('d-m-Y',strtotime($person->dob)), } My model <?php class Person_Model extends Model { private $person= 'person'; function Person(){ parent::Model(); } function list_all(){ $this->db->order_by('person_id','asc'); return $this->db->get($person); } function count_all(){ return $this->db->count_all($this->person); } function get_paged_list($limit = 0, $offset = 0) { $this->db->limit($limit, $offset); $this->db->select("person.*, company.company_name as company"); $this->db->from('person'); $this->db->join('company','person.company_id = company.company_id','left'); //MY QUESTION:? CAN I JOIN MORE WITH TABLE POSITION? $query = $this->db->get(); return $query->result(); } function get_by_id($id){ $this->db->where('person_id', $id); return $this->db->get($this->person); } function save($person){ $this->db->insert($this->person, $person); return $this->db->insert_id(); } function update($id, $person){ $this->db->where('person_id', $id); $this->db->update($this->person, $person); } function delete($id){ $this->db->where('person_id', $id); $this->db->delete($this->person); } } ?>

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