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  • Haskell compile time function calculation

    - by egon
    I would like to precalculate values for a function at compile-time. Example (real function is more complex, didn't try compiling): base = 10 mymodulus n = n `mod` base -- or substitute with a function that takes -- too much to compute at runtime printmodules 0 = [mymodulus 0] printmodules z = (mymodulus z):(printmodules (z-1)) main = printmodules 64 I know that mymodulus n will be called only with n < 64 and I would like to precalculate mymodulus for n values of 0..64 at compile time. The reason is that mymodulus would be really expensive and will be reused multiple times.

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  • Creating an expandable, cross-platform compatible program "core".

    - by Thomas Clayson
    Hi there. Basically the brief is relatively simple. We need to create a program core. An engine that will power all sorts of programs with a large number of distinct potential applications and deployments. The core will be an analytics and algorithmic processor which will essentially take user-specific input and output scenarios based on the information it gets, whilst recording this information for reporting. It needs to be cross platform compatible. Something that can have platform specific layers put on top which can interface with the core. It also needs to be able to be expandable, for instance, modular with developers being able to write "add-ons" or "extensions" which can alter the function of the end program and can use the core to its full extent. (For instance, a good example of what I'm looking to create is a browser. It has its main core, the web-kit engine, for instance, and then on top of this is has a platform-specific GUI and can also have add-ons and extensions which can change the behavior of the program.) Our problem is that the extensions need to interface directly with the main core and expand/alter that functionality rather than the platform specific "layer". So, given that I have no experience in this whatsoever (I have a PHP background and recently objective-c), where should I start, and is there any knowledge/wisdom you can impart on me please? Thanks for all the help and advice you can give me. :) If you need any more explanation just ask. At the moment its in the very early stages of development, so we're just researching all possible routes of development. Thanks a lot

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  • using property file along with config file to be used with mxmlc

    - by whoopy_whale
    Hi, I'm trying to run mxmlc in the following manner. mxmlc -load-config+=mycfg.xml C:\\projects\\src\\main.mxml -output myswf.swf In the config file, I want to keep some values configurable, for example the paths of the external libraries. Is it possible to include a property file into the config file and use it as {property_name} in the config file? Or is it possible to pass certain arguments from the command line itself that will override/replace the corresponding values in the config file, like the -D option in the ant command? Please provide your suggestions.

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  • How to use ORDER BY, LOWER .. in SQL SERVER 2008 with non-unicode languages

    - by hgulyan
    Hi, The question is about Armenian. I'm using sql server 2005, collation SQL_Latin1_General_CP1_CI_AS, data mostly is in Armenian and we can't use unicode. I tested on ms sql 2008 with a windows collation for armenian language ( Cyrillic_General_100_ ), I have found here, ( http://msdn.microsoft.com/en-us/library/ms188046.aspx ) but it didn't help. I have a function, that orders hex values and lower function, which takes each char in string and covnerts it to it's lower form, but it's not acceptable solution, it works really slow, calling that functions on every column of a huge table. Is there any solution for this issue not using unicode and working with hex values manually?

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  • Programming advice - Which Loops?

    - by GaxZE
    Theres no easy way to say this so ill just say it in the form of a story. Im looking for advice on which loops and where. Here goes: out of 200-odd fields in the database, i need to run the following against each field. extract allowed values using extract function place allowed values into an array loop the array to be inserted into a db table first check records dont already exist. if they dont exist insert into table. ive found myself playing with this for the past two days and getting tangled and tangled in loops. wondering if anybody can guide.

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  • Android Stream Data Over Wifi?

    - by Neb
    Im trying to make an app for android that will stream the data of the accelerometer to be used as a game controller on my pc over a local wifi connection. Is it possible to make some kind of wifi stream of the accelerometer values in the android app and then make the pc somehow 'read' this stream? Or would it just be better for the pc to make endless calls to the phone getting the newest accelerometer values from a local android server? It would also have to send commands from the phone such as 'button1 pressed', 'button1 released'.

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  • Dependency Injection and Unit of Work pattern

    - by sunwukung
    I have a dilemma. I've used DI (read: factory) to provide core components for a homebrew ORM. The container provides database connections, DAO's,Mappers and their resultant Domain Objects on request. Here's a basic outline of the Mappers and Domain Object classes class Mapper{ public function __constructor($DAO){ $this->DAO = $DAO; } public function load($id){ if(isset(Monitor::members[$id]){ return Monitor::members[$id]; $values = $this->DAO->selectStmt($id); //field mapping process omitted for brevity $Object = new Object($values); return $Object; } } class User(){ public function setName($string){ $this->name = $string; //mark modified by means fair or foul } } The ORM also contains a class (Monitor) based on the Unit of Work pattern i.e. class Monitor(){ private static array modified; private static array dirty; public function markClean($class); public function markModified($class); } The ORM class itself simply co-ordinates resources extracted from the DI container. So, to instantiate a new User object: $Container = new DI_Container; $ORM = new ORM($Container); $User = $ORM->load('user',1); //at this point the container instantiates a mapper class //and passes a database connection to it via the constructor //the mapper then takes the second argument and loads the user with that id $User->setName('Rumpelstiltskin');//at this point, User must mark itself as "modified" My question is this. At the point when a user sets values on a Domain Object class, I need to mark the class as "dirty" in the Monitor class. I have one of three options as I can see it 1: Pass an instance of the Monitor class to the Domain Object. I noticed this gets marked as recursive in FirePHP - i.e. $this-Monitor-markModified($this) 2: Instantiate the Monitor directly in the Domain Object - does this break DI? 3: Make the Monitor methods static, and call them from inside the Domain Object - this breaks DI too doesn't it? What would be your recommended course of action (other than use an existing ORM, I'm doing this for fun...)

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  • How Can I Populate Default Form Data with a ManyToMany Field?

    - by b14ck
    Ok, I've been crawling google and Django documentation for over 2 hours now (as well as the IRC channel on freenode), and haven't been able to figure this one out. Basically, I have a model called Room, which is displayed below: class Room(models.Model): """ A `Partyline` room. Rooms on the `Partyline`s are like mini-chatrooms. Each room has a variable amount of `Caller`s, and usually a moderator of some sort. Each `Partyline` has many rooms, and it is common for `Caller`s to join multiple rooms over the duration of their call. """ LIVE = 0 PRIVATE = 1 ONE_ON_ONE = 2 UNCENSORED = 3 BULLETIN_BOARD = 4 CHILL = 5 PHONE_BOOTH = 6 TYPE_CHOICES = ( ('LR', 'Live Room'), ('PR', 'Private Room'), ('UR', 'Uncensored Room'), ) type = models.CharField('Room Type', max_length=2, choices=TYPE_CHOICES) number = models.IntegerField('Room Number') partyline = models.ForeignKey(Partyline) owner = models.ForeignKey(User, blank=True, null=True) bans = models.ManyToManyField(Caller, blank=True, null=True) def __unicode__(self): return "%s - %s %d" % (self.partyline.name, self.type, self.number) I've also got a forms.py which has the following ModelForm to represent my Room model: from django.forms import ModelForm from partyline_portal.rooms.models import Room class RoomForm(ModelForm): class Meta: model = Room I'm creating a view which allows administrators to edit a given Room object. Here's my view (so far): def edit_room(request, id=None): """ Edit various attributes of a specific `Room`. Room owners do not have access to this page. They cannot edit the attributes of the `Room`(s) that they control. """ room = get_object_or_404(Room, id=id) if not room.is_owner(request.user): return HttpResponseForbidden('Forbidden.') if is_user_type(request.user, ['admin']): form_type = RoomForm elif is_user_type(request.user, ['lm']): form_type = LineManagerEditRoomForm elif is_user_type(request.user, ['lo']): form_type = LineOwnerEditRoomForm if request.method == 'POST': form = form_type(request.POST, instance=room) if form.is_valid(): if 'owner' in form.cleaned_data: room.owner = form.cleaned_data['owner'] room.save() else: defaults = {'type': room.type, 'number': room.number, 'partyline': room.partyline.id} if room.owner: defaults['owner'] = room.owner.id if room.bans: defaults['bans'] = room.bans.all() ### this does not work properly! form = form_type(defaults, instance=room) variables = RequestContext(request, {'form': form, 'room': room}) return render_to_response('portal/rooms/edit.html', variables) Now, this view works fine when I view the page. It shows all of the form attributes, and all of the default values are filled in (when users do a GET)... EXCEPT for the default values for the ManyToMany field 'bans'. Basically, if an admins clicks on a Room object to edit, the page they go to will show all of the Rooms default values except for the 'bans'. No matter what I do, I can't find a way to get Django to display the currently 'banned users' for the Room object. Here is the line of code that needs to be changed (from the view): defaults = {'type': room.type, 'number': room.number, 'partyline': room.partyline.id} if room.owner: defaults['owner'] = room.owner.id if room.bans: defaults['bans'] = room.bans.all() ### this does not work properly! There must be some other syntax I have to use to specify the default value for the 'bans' field. I've really been pulling my hair out on this one, and would definitely appreciate some help. Thanks!

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  • mysql retrieve duplicate entry

    - by Cypher
    I have a huge text file that I'm importing into a mysql database. The four important tables that I'm using are -- schools (id,name) variables (id, name) var_entries (id, var_id, data) with unique( var_id, data) data (id, school_id, var_ent_id) I have a file that I'm importing into this database. I want every variable to have a unique set of values (hence the unique call) but I also then want to associate the appropriate var_entrie with a school in data. So my question is is there a way to get the appropriate var_ent_id when you a duplicate var_entry is added? I know I can do this with storing the values and using a strcmp but it'd be messy.

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  • java.util.Map with HtmlDataTable

    - by gerry
    Hi, I'm developing an application on GlassFish v3 which uses Suns-RI of JavaEE6 and JSF2.0, etc. And the bad thing is, that no changes/switches away from Suns RI can be made (to use MyFaces or something like that). Now, the problem is, that I want to build HtmlDatatable by hand ( in Java code). The datatable should represent a java.util.Map where the first column should display the key and the second the values of the map. I've build successfully a PanelGrid from a java.util.List and used every time the "setExpressionValue" methods of UIComponent to bind the UI to the underlying List. But now, this doesn't work with the Map. Here is a snippet of my code: public HtmlDataTable getEntityDetailsDataTable() { ... Application app = FacesContext.getCurrentInstance().getApplication(); HtmlDataTable component = (HtmlDataTable)app.createComponent(HtmlDataTable.COMPONENT_TYPE); component.setValueExpression("value", ExpressionUtil.createValueExpression("#{entityTree.entity."+fieldName+".entrySet()}", Map.class)); component.setVar("param"); UIColumn column = new UIColumn(); UIOutput label1 = DynamicHtmlComponentCreator.createHtmlOutputText("#{param[key]}", String.class); column.getChildren().add(label1); UIOutput label2 = DynamicHtmlComponentCreator.createHtmlOutputText("#{param[value]}", String.class); column.getChildren().add(label2); component.getChildren().add(column); ... return component; } component.getChildren().add(column); ... return component; } So, further the problem is, that this code only prints out the content of the Map, on another page I need the values displayed in HtmlInputText elements and the whole map updated if the user clicks a i.e. "Save" button. So, further the problem is, that this code only prints out the content of the Map, on another page I need the values displayed in HtmlInputText elements and the whole map updated if the user clicks a i.e. "Save" button. If there is a workaround, to represent the Map as to Lists...please help me, because for this (map as 2 lists) I've no idea how the underlying map/database model can be updated again. Hopefully, someone can help me....

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  • how to check whether for each value in array is a numeric, alphabetical or alphanumeric (Perl)

    - by dexter
    i have array which values are user input like: aa df rrr5 4323 54 hjy 10 gj @fgf %d would be that array, now i want to check each value in array whether its numeric or alphabetic (a-zA-Z) or alphanumeric and save them in other respective arrays i have done: my @num; my @char; my @alphanum; my $str =<>; my @temp = split(" ",$str); foreach (@temp) { print "input : $_ \n"; if ($_ =~/^(\d+\.?\d*|\.\d+)$/) { push(@num,$_); } } this works, similarly i want to check for alphabet, and alphanumeric values note: alphanumeric ex. fr43 6t$ $eed5 *jh

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  • Converting HTML special characters into their value using Python

    - by tipu
    I have a file that's littered with these: http://www.utexas.edu/learn/html/spchar.html That link just displays all sorts of HTML entities, such as – &ndash; — &mdash; ¡ &iexcl; and so on. Is it possible in Python to natively convert these characters back into their values so any occurrences of &ndash; will appear as – instead? My current approach was just to make a dict of key html entities and their utf-8 values and do search and replace, but I was wondering if there are any libraries that can take care of this for me.

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  • Spring 3 MVC - how to turn a form into a query string?

    - by caerphilly
    I have a simple Spring form that gets bound to a form object on post. The http POST handler does some work, and then needs to redirect to a new URL, passing the form data as querystring parameters. So, assuming I have a form backing object with properties "param1" and "param2", I want to build a string that looks something like this: redirect:/app/new/page?param1=value;param2=value Now, Spring will automatically bind values FROM a querystring or a form post into my form object, but I want to GENERATE a querystring with values taken from the form object. Obviously it's trivial to do this manually but since I'm going to have lots of different form backing objects, is there some built-in facility in Spring to generate a query string from a form object, suitable for building into a URL? Thanks.

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  • "From Russia with Love" - My Oracle Russian Experience

    - by cwarticki
    Two weeks ago, I traveled to Moscow, Russia. I had the pleasure of meeting with many of our Oracle Partners and Customers in the region.  I also worked with our Oracle Russia team throughout the week building many new friendships. The showcase for the week was an Oracle Support Strategy event for our Oracle Partners and Customers.  It was held at the Kateria-City Hotel, Moscow.  The Oracle Marketing team did an amazing job registering 100+ for the event, and nearly 100 were in attendance.           During the event, I spoke about many different topics. Part was a hands-on workshop to personalize your MOS Dashboard and configure Hot-Topics Email alerts.  Customers learned how to subscribe to newsletters and other Oracle information.  It covered a mulitude of Support Best Practices.  Additionally, I presented Platinum Services to the audience and my colleague Kristophe Hermans, from Oracle Belgium spoke on Proactive Support. In addition, I had the distinct privilege to meet one-on-one with our customers representing OJSC VimpelCom, MTC-Rus and Sberbank.  Pictured with me is Valery Yourinsky, Director of Technology Consulting Dept, FORS Distribution (Oracle Platinum Partner) Finally, I spent 2.5 days with my Oracle colleagues from Oracle Russia. They are super, hard-working, dedicated, customer-service professionals. All of them! I owe them all a debt of gratitude. Next time, we meet in Florida - ok? I am very appreciative to all our Oracle partners, customers and colleagues.  Thanks for hosting me and showing me a wonderful time in your country.  I look forward to my return. Sincerely,Chris WartickiGlobal Customer Management

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  • how to consume .net webservices

    - by Rajesh Rolen- DotNet Developer
    please tell that can we consume .net web services in php or not. if yes then please tell me how can we do it. i am to create a web service which takes values and save it in database also it will take values and reply some data as a standard xml format. i know how to create web service and how to use it in asp.net but don't know how to use/call it from php. thing is that i will not be writing code in php to consume but wants to know that do i need to take care of any special thing or need to do some extra code to make it available and use by php developers. i am to create web service in .net framework 2.0 Thanks

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  • Ten Classic Electronic Toys and Their Modern Equivalents

    - by Jason Fitzpatrick
    Whether you’re looking to relive the toy exploits of your youth or pass your love of tinkering and electronics onto the younger generation, this list highlights ten great electronic toys of yesteryear and their modern equivalents. Courtesy of Wired’s Geek Dad, the description for the all-in-one electronics kit seen here: What is was: Arthur C. Clarke has said that any sufficiently advanced technology is indistinguishable from magic. As a kid in the midst of an increasing technological revolution, electronics were at the heart of that. Learning electronics was made easy through the Science Fair Electronic Project Kits found at Radioshack. Through the project guides, kids could construct various ‘experiments’ by attaching wires to terminal springs that make circuits. The terminal springs would wire in components such as LED segment lights, photo sensors, resistors, diodes, etc. While it was fun getting the projects to work, the manuals lacked in depth explanation as to what was happening in the circuit to produce the project’s result. Why it was awesome: First, it was a simple buy for parents. Everything you needed to get your child interested in electronics was right in the kit. You didn’t need to breadboard or solder. I remember a distinct feeling of accomplishment making a high-water alarm or a light-sensor game with the realization that the bundles of wires springing up from the kit were actually doing something! Modern equivalent: You can still pick up variations of the 100-in-1 kits, but their popular replacement seem to be Snap Circuits by Elenco. All of the components are mounted on a plastic base with a contact on either end which interconnect with each other and the plastic base that projects can be mounted to. Each component also has the electrical diagram symbol for that component drawn on it so it can help you read schematics. For that reason alone, I like these better. HTG Explains: Why You Only Have to Wipe a Disk Once to Erase It HTG Explains: Learn How Websites Are Tracking You Online Here’s How to Download Windows 8 Release Preview Right Now

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  • create new inbox folder and save emails

    - by kasunmit
    i am trying http://www.c-sharpcorner.com/uploadfile/rambab/outlookintegration10282006032802am/outlookintegration.aspx[^] this code for create inbox personal folder and save same mails at the datagrid view (outlook 2007 and vsto 2008) i am able to create inbox folder according to above example but couldn't wire code for save e-mails at that example to save contect they r using following code if (chkVerify.Checked) { OutLook._Application outlookObj = new OutLook.Application(); MyContact cntact = new MyContact(); cntact.CustomProperty = txtProp1.Text.Trim().ToString(); //CREATING CONTACT ITEM OBJECT AND FINDING THE CONTACT ITEM OutLook.ContactItem newContact = (OutLook.ContactItem)FindContactItem(cntact, CustomFolder); //THE VALUES WE CAN GET FROM WEB SERVICES OR DATA BASE OR CLASS. WE HAVE TO ASSIGN THE VALUES //TO OUTLOOK CONTACT ITEM OBJECT . if (newContact != null) { newContact.FirstName = txtFirstName.Text.Trim().ToString(); newContact.LastName = txtLastName.Text.Trim().ToString(); newContact.Email1Address = txtEmail.Text.Trim().ToString(); newContact.Business2TelephoneNumber = txtPhone.Text.Trim().ToString(); newContact.BusinessAddress = txtAddress.Text.Trim().ToString(); if (chkAdd.Checked) { //HERE WE CAN CREATE OUR OWN CUSTOM PROPERTY TO IDENTIFY OUR APPLICATION. if(string.IsNullOrEmpty(txtProp1.Text.Trim().ToString())) { MessageBox.Show("please add value to Your Custom Property"); return; } newContact.UserProperties.Add("myPetName", OutLook.OlUserPropertyType.olText, true, OutLook.OlUserPropertyType.olText); newContact.UserProperties["myPetName"].Value = txtProp1.Text.Trim().ToString(); } newContact.Save(); this.Close(); } else { //IF THE CONTACT DOES NOT EXIST WITH SAME CUSTOM PROPERTY CREATES THE CONTACT. newContact = (OutLook.ContactItem)CustomFolder.Items.Add(OutLook.OlItemType.olContactItem); newContact.FirstName = txtFirstName.Text.Trim().ToString(); newContact.LastName = txtLastName.Text.Trim().ToString(); newContact.Email1Address = txtEmail.Text.Trim().ToString(); newContact.Business2TelephoneNumber = txtPhone.Text.Trim().ToString(); newContact.BusinessAddress = txtAddress.Text.Trim().ToString(); if (chkAdd.Checked) { //HERE WE CAN CREATE OUR OWN CUSTOM PROPERTY TO IDENTIFY OUR APPLICATION. if (string.IsNullOrEmpty(txtProp1.Text.Trim().ToString())) { MessageBox.Show("please add value to Your Custom Property"); return; } newContact.UserProperties.Add("myPetName", OutLook.OlUserPropertyType.olText, true, OutLook.OlUserPropertyType.olText); newContact.UserProperties["myPetName"].Value = txtProp1.Text.Trim().ToString(); } newContact.Save(); this.Close(); } } else { OutLook._Application outlookObj = new OutLook.Application(); OutLook.ContactItem newContact = (OutLook.ContactItem)CustomFolder.Items.Add(OutLook.OlItemType.olContactItem); newContact.FirstName = txtFirstName.Text.Trim().ToString(); newContact.LastName = txtLastName.Text.Trim().ToString(); newContact.Email1Address = txtEmail.Text.Trim().ToString(); newContact.Business2TelephoneNumber = txtPhone.Text.Trim().ToString(); newContact.BusinessAddress = txtAddress.Text.Trim().ToString(); if (chkAdd.Checked) { //HERE WE CAN CREATE OUR OWN CUSTOM PROPERTY TO IDENTIFY OUR APPLICATION. if (string.IsNullOrEmpty(txtProp1.Text.Trim().ToString())) { MessageBox.Show("please add value to Your Custom Property"); return; } newContact.UserProperties.Add("myPetName", OutLook.OlUserPropertyType.olText, true, OutLook.OlUserPropertyType.olText); newContact.UserProperties["myPetName"].Value = txtProp1.Text.Trim().ToString(); } newContact.Save(); this.Close(); } } else { //CREATES THE OUTLOOK CONTACT IN DEFAULT CONTACTS FOLDER. OutLook._Application outlookObj = new OutLook.Application(); OutLook.MAPIFolder fldContacts = (OutLook.MAPIFolder)outlookObj.Session.GetDefaultFolder(OutLook.OlDefaultFolders.olFolderContacts); OutLook.ContactItem newContact = (OutLook.ContactItem)fldContacts.Items.Add(OutLook.OlItemType.olContactItem); //THE VALUES WE CAN GET FROM WEB SERVICES OR DATA BASE OR CLASS. WE HAVE TO ASSIGN THE VALUES //TO OUTLOOK CONTACT ITEM OBJECT . newContact.FirstName = txtFirstName.Text.Trim().ToString(); newContact.LastName = txtLastName.Text.Trim().ToString(); newContact.Email1Address = txtEmail.Text.Trim().ToString(); newContact.Business2TelephoneNumber = txtPhone.Text.Trim().ToString(); newContact.BusinessAddress = txtAddress.Text.Trim().ToString(); newContact.Save(); this.Close(); } } /// /// ENABLING AND DISABLING THE CUSTOM FOLDER AND PROPERY OPTIONS. /// /// /// private void rdoCustom_CheckedChanged(object sender, EventArgs e) { if (rdoCustom.Checked) { txFolder.Enabled = true; chkAdd.Enabled = true; chkVerify.Enabled = true; txtProp1.Enabled = true; } else { txFolder.Enabled = false; chkAdd.Enabled = false; chkVerify.Enabled = false; txtProp1.Enabled = false; } } i don t have idea to convert it to save e-mails in the datagrid view the data gride view i am mentioning here is containing details (sender address, subject etc.) of unread mails and the i i am did was perform some filter for that mails as follows string senderMailAddress = txtMailAddress.Text.ToLower(); List list = (List)dgvUnreadMails.DataSource; List myUnreadMailList; List filteredList = (List)(from ci in list where ci.SenderAddress.StartsWith(senderMailAddress) select ci).ToList(); dgvUnreadMails.DataSource = filteredList; it was done successfully then i need to save those filtered e-mails to that personal inbox folder i created already for that pls give me some help my issue is that how can i assign outlook object just like they assign it to contacts (name, address, e-mail etc.) because in the e-mails we couldn't find it ..

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  • Audit Table using Triggers

    - by Jose
    DROP TABLE IF EXISTS `actividades`.`act_actividad_audit`; CREATE TABLE `actividades`.`act_actividad_audit` ( `fe_creacion` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, `usr_digitador` char(10) NOT NULL, `ip_digitador` char(15) NOT NULL, `id_act_actividad` int(10) unsigned NOT NULL, `titulo` char(64) NOT NULL, `act_prioridad_id` int(10) unsigned NOT NULL, `act_motivo_id` int(10) unsigned NOT NULL, `detalle` text, `detalle_tecnico` text, `hostname_id` int(10) unsigned NOT NULL, `hostname_nombre` char(50) NOT NULL, `es_SMOP` tinyint(1) NOT NULL, `url_SMOP` text, `es_tecnico` tinyint(1) NOT NULL ) ENGINE=InnoDB DEFAULT CHARSET=latin1 COMMENT='Auditoria Actividad General'; I want to populate that audit table with a trigger but how can i send or fill the values for usr_digitador or ip_digitador if that values are on client side.? please help

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  • T-SQL out of order insert

    - by tearman
    Basically I have a User-Defined Table Type (for use as a table-valued variable) which I'm referencing in a stored procedure that effectively just calls two other stored procedures, then inserts those values into the table type. Id est INSERT INTO @tableValuedVariable (var1, var2, var3, var4, var5) EXEC [dbo].StoredProcedure1; INSERT INTO @tableValuedVariable (var1, var2, var5) EXEC [dbo].StoredProcedure2; You can probably already tell what I'm going to ask. Basically StoredProcedure2 only returns a few of the values the table is set to hold, and I'd like those other variables to just be null (as defined as default). Only SQL is complaining that I'm not specifying all the variables available to that table. The return datasets can be quite sizable so I'd like to avoid loops and such for obvious reasons. Thanks for any help.

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  • How to insert bulk data into mysql table from asp.net at once.

    - by kranthi
    Hi, I have a requirement that I need to read an excel sheet using asp.net/C# and insert all the records into mysql table.The excel sheet consists of around 2000 rows and 50 columns. Currently,upon reading the excel records ,I am inserting the records one by one using a prepare statement into mysql table.But its taking around 70 secs to do so because of the huge data. I've also thought of creating a new datarow, assigning values to each cell,adding the resulting datarow to datatable and finally calling dataadapter.update(...).But it seems to be complex because I got around 50 columns and hence I'll have to assign 50 values to the datarow. Could someone please suggest if there is an alternate to improve the performance of the insertion? Thanks

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  • Looking for PCA snippet/source code in C++

    - by jihchuan
    Hi, I'm currently developing a software to compare 2 images. I start with extract the image's RGB values, form a matrix of array and then attempt to compress the values using PCA, and then match/recognize it with a pre-set data to find its similarity. But I can't proceed with the PCA part. (I'm using C++, C also can) If there any library/source code/snippet for it please let me know, or if there're any recommendation on my case also very welcomed!! I'd appreciate your helps!! Thanks! JC, [email protected]

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  • SQLite.Net Issue With BeginTransaction

    - by cam
    I'm trying to use System.Data.Sqlite library, and I'm following the documentation about optimizing inserts so I copied this code directly out of the documentation: using (SQLiteTransaction mytransaction = myconnection.BeginTransaction()) { using (SQLiteCommand mycommand = new SQLiteCommand(myconnection)) { SQLiteParameter myparam = new SQLiteParameter(); int n; mycommand.CommandText = "INSERT INTO [MyTable] ([MyId]) VALUES(?)"; mycommand.Parameters.Add(myparam); for (n = 0; n < 100000; n ++) { myparam.Value = n + 1; mycommand.ExecuteNonQuery(); } } mytransaction.Commit(); } Now, I initialize I connection right before that by using SqlConnection myconnection = new SqlConnection("Data Source=blah"); I have a Database named blah, with the correct tables and values. The problem is when I run this code, it says "Operation is not valid due to the current state of the object" I've tried changing the code around several times, and it still points to BeginTransaction. What gives?

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  • Creating an Excel file using .NET (C#) - Problems with columns headers!

    - by tsocks
    Hello, I want to create & fill a .xls file using ADO.NET or LINQ, but I do not want to have the columns names in the first row. I just want to insert rows starting in row no. 1. I know I have to insert colums first, but... is there a way to 'hide' those columns headers? The problem is that, in first row of my spreadsheet, I must have only two values (one in A1 and the other in B1), but in the remaining rows I'll be inserting more than just two values (maximum 15 columns). I'm open to suggestions/hacks/tricks even if that's not the best way of doing this. Thanks!

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