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• Insert problem using ADO with classic ASP

  - by Kemal Akcali

  ' Setting variables Dim con, sql_insert, data_source data_source = "project_db" sql_insert = "insert into cart ( UserID,Count,ProductName,ProductDescription,ProductPrice) values ('"&user_id&"','"&count&"','"&product_name&"','"&product_description&"','"&product_price&"')" ' Creating the Connection Object and opening the database Set con = Server.CreateObject("ADODB.Connection") con.Open data_source ' Executing the sql insertion code con.Execute sql_insert ' Done. Now Close the connection con.Close Set con = Nothing AS you can see , it is a simple code . and it worked in my local host for 5 or 6 times. but now it didn't work. What's the problem ? I think , it's about my database or memory. i setup 2 different iis in 2 different computer and they behave same... please help.. Thanks

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• stop cript debug error dialogs occur in ie8 ?

  - by Haroldo

  I get this, clicking 'no' means the page displays flawlessly. it's refering to this part of jquery1.4.2.js: // Get the Nth element in the matched element set OR // Get the whole matched element set as a clean array get: function( num ) { return num == null ? // Return a 'clean' array this.toArray() : // Return just the object ( num < 0 ? this.slice(num)[ 0 ] : this[ num ] ); }, I assume i'm calling something in the wrong context somewhere in one of my js files (which would be a real mission to find). Will standard IE8 users get this error? (i imagine ms make it pretty difficult to reinstall ie!)

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• Beginner Design pattern question (Web Services involved)

  - by zombie

  Hi all ! I am a noob to web services world. I need to develop a login validator module and expose it as a service. I want it to be service independent, i.e I should have the option of exposing it as a SOAP service or REST service in the future. What pattern should I follow ? Sorry if I am unclear in my requirements, I can clarify as per need. Thanks !! Edit : I am using Eclipse as an IDE and Jersey libraries. I am not into any framework, simply using the MVC pattern. I find a lot of difference between SOAP ann REST methods, so I want my methods to be implementation independent - i.e I should be easily able to use my method through a SOAP or REST service call as per need. What should I do for maximum flexibility ?

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• Declaring and creating an object then adding to collection VS Adding object to collection using new

  - by ZeeMan

  Ok so the title may have been confusing so i have posted 2 code snippets to illustrate what i mean. NOTE: allUsers is just a collection. RegularUser regUser = new RegularUser(userName, password, name, emailAddress); allUsers.Add(regUser); VS allUsers.Add(new RegularUser(userName, password, name, emailAddress)); Which snippet A or B is better and why? What are the advantages or disadvantages? The example i wrote was C# but does the language (C#, Java etc) make a difference?

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• Can't store Data URI to database without stripping + characters

  - by citizencane

  I am trying to grab a reference to images with src's in URI scheme. An example would be the images on google.com/news. if I alert(escape(saveObj.image)); I get something like below: data%3Aimage/jpeg%3Bbase64%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 I pass that from the js file and am using django to get that into a mysql table of type utf8_unicode_ci using modelform.save, but when i examine what's in the database, I see: data:image/jpeg;base64,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 nXF/pZFKuffViGPW5ximQUEz1cNdPNKms6g8TlWBufDcHyxsdLUmqoYqhiWZ1BYtsSe The key difference is that in my database all of the '+' characters from the original have been stripped and replaced with spaces. Any ideas? I'm going blind trying to figure this out! :P

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• How can I avoid setting some columns if others haven't changed, when working with Linq To SQL?

  - by Patrick Szalapski

  In LINQ to SQL, I want to avoid setting some columns if others haven't changed? Say I have dim row = (From c in dataContext.Customers Where c.Id = 1234 Select c).Single() row.Name = "Example" ' line 3 dataContext.SubmitChanges() ' line 4 Great, so LINQ to SQL fetches a row, sets the name to "Example" in memory, and generates an update SQL query only when necessary--that is, no SQL will be generated if the customer's name was already "Example". So suppose on line 3, I want to detect if row has changed, and if so, set row.UpdateDate = DateTime.Now. If row has not changed, I don't want to set row.UpdateDate so that no SQL is generated. Is there any good way to do this?

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• Why do I have to explicitly cast sometimes for varargs?

  - by Daniel Lew

  I've got a Class that uses reflection a lot, so I wrote a method to help out: private <T> T callMethod(String methodName, Class[] parameterTypes, Object[] args) { try { Class c = mVar.getClass(); Method m = c.getMethod(methodName, (Class[]) parameterTypes); return (T) m.invoke(mVar, args); } // Insert exception catching here [...] } This worked well for any method that had parameters, however I had to explicitly cast parameterTypes to Class[] in order for this to work for methods with no parameters (e.g., callMethod('funName', null, null);). I've been trying to figure out why this is the case. It seems to me that if parameterTypes, when null, had no concept of what type it is (Class[]), then I'd need to cast it for getMethod(). But if that's the case, why is getMethod() able to tell the difference between null, and (Class[]) null when the method is invoked?

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• How to use Mysql variables with Hibernate ?

  - by Jerome C.

  Hello, I need to use a native sql query in Hibernate with use of variable. But hibernate throws an error saying: Space is not allowed after parameter prefix So there is a conflict with the := mysql variable assignment and hibernate variable assignment. Here is my sql query: SET @rank:=0; UPDATE Rank SET rank_Level=@rank:=@rank+1 ORDER BY Level; I can't use a stored procedure because my sql query is dynamically generated ('Level' can be 'int' or 'force'...) How can I do this ? thanks

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• How to change the app name in OSX menubar in a pure-Python application bundle?

  - by gyim

  I am trying to create a pure-Python application bundle for a wxPython app. I created the .app directory with the files described in Apple docs, with an Info.plist file etc. The only difference between a "normal" app and this bundle is that the entry point (CFBundleExecutable) is a script which starts with the following line: #!/usr/bin/env python2.5 Everything works fine except that the application name in the OSX menubar is still "Python" although I have set the CFBundleName in Info.plist (I copied the result of py2app, actually). The full Info.plist can be viewed here: http://tinyurl.com/32qgpjt How can I change this? I have read everywhere that the menubar name is only determined by CFBundleName. How is it possible that the Python interpreter can change this in runtime? Note: I was using py2app before, but the result was too large (50 MB instead of the current 100KB) and it was not even portable between Leopard and Snow Leopard... so it seems to be much easier to create a pure-Python app bundle "by hand" than transforming the output of py2app.

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• android.permission.CALL_PHONE: making single apk for phones and tablets:

  - by Eugene Chumak

  I want my app to be available for both phones and tablets. The only difference between phone and tablet versions is: in "phone" version my app has buttons, which allow to make a phone call to a certain number. What is my problem: to be able to make phone call I need to add a permission to manifest file - <uses-permission android:name="android.permission.CALL_PHONE" /> This permission makes application incompatible with tablets. If I remove the permission, app cant make calls being launched on phone. How to make an app, that supports both phones and tablets and allow to make calls from phones?

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• Java Swing - Problem in JSpinner

  - by Yatendra Goel

  I am developing a Java Desktop Application and designing the GUI with the help of Netbeans Swing GUI builder. I want to use a JSpinner in my app. I have dragged and dropped it to a JPanel. Now, I want to set its two properties: First, It should display numbers in the range of 1 to 50. Neither less than 1 nor greater than 50. How can I set that range? Second, when I try to get the value of it by spinner.getValue() it returns an Object. As my spinner's data type is Integer, would it be better to downcast the Object into Integer or Is there any other way to get that numeric value?

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• Setting up separate ctags db's for C/C++ standard libs, boost, and third party libs

  - by Robert S. Barnes

  I want to set up separate ctags databases for various libraries in /usr/include/ for use with OmniCppComplete. The idea is to be able to pull in only the libraries needed for a particular project in the target language - C or C++. For example, I'd like to have one database for the standard C libraries, one for system libraries that might be used by either C or C++ programs ( sockets / networking comes to mind ) one for the standard C++ libs / STL / Boost, and then other databases for various third party libraries such as QT or glib. Then I could pull something in simply by typing set tags+= ~/.vim/somelib.tags in vim. I assume that everything related to the C++ stdlib and STL are in the /usr/include/c++ and that Boost is all in /usr/include/boost. Unfortunately it seems that the standard C libs and system libs are just kind of dumped directly into /usr/include/ with a variety of other stuff. How can I get a list of which files and directories belong to which libs? I'm on Ubuntu 8.04.

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• Getting 0x80131902 when calling COM+ component

  - by Kyle W

  I created a COM+ component in .Net. It needs to use a configuration file, so I've created a directory with an application.manifest and application.config file and set that as the Application Root Directory. Now when I try to create an instance of that object, I get the following HRESULT: 0x80131902. I can't seem to find exactly what this means, except that there is a problem loading the app-domain. If I don't set the Application Root Directory, it loads just fine (but doesn't have access to the config).

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• Java Sql Udate error, data type missmatch

  - by codo

  I have created a table in ms access. I have set the data type of ID to Auto Number in MS-access. In java when I try to update a record. the netBeans IDE gives me the error of " data type missmatch in criteria expression". But when I changed the ID number that was not in the table already it works well. The code is below. String sql = "Update table1 set price ='" + txtPrice.getText() + "', quantity='" + txtQuantity.getText() + "', description='" + txtDescription.getText() + "' where id= " + txtid.getText() + ""; try { pst = conn.prepareStatement(sql); pst.executeUpdate(); JOptionPane.showMessageDialog(null, "Updated"); UpdateJTable(); } catch (Exception e) { JOptionPane.showMessageDialog(null, e); }

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• Any way to avoid a filesort when order by is different to where clause?

  - by Julian

  I have an incredibly simple query (table type InnoDb) and EXPLAIN says that MySQL must do an extra pass to find out how to retrieve the rows in sorted order. SELECT * FROM `comments` WHERE (commentable_id = 1976) ORDER BY created_at desc LIMIT 0, 5 exact explain output: table select_type type extra possible_keys key key length ref rows comments simple ref using where; using filesort common_lookups common_lookups 5 const 89 commentable_id is indexed. Comments has nothing trick in it, just a content field. The manual suggests that if the order by is different to the where, there is no way filesort can be avoided. http://dev.mysql.com/doc/refman/5.0/en/order-by-optimization.html I also tried order by id as well as it's equivalent but makes no difference, even if I add id as an index (which I understand is not required as id is indexed implicitly in MySQL). thanks in advance for any ideas!

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• Java - Thread safety of ArrayList constructors

  - by andy boot

  I am looking at this piece of code. This constructor delegates to the native method "System.arraycopy" Is it Thread safe? And by that I mean can it ever throw a ConcurrentModificationException? public Collection<Object> getConnections(Collection<Object> someCollection) { return new ArrayList<Object>(someCollection); } Does it make any difference if the collection being copied is ThreadSafe eg a CopyOnWriteArrayList? public Collection<Object> getConnections(CopyOnWriteArrayList<Object> someCollection) { return new ArrayList<Object>(someCollection); }

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• WCF returning custom types

  - by Gena Verdel

  Hi. I'm a newbie to WCF, trying to perform relatively simple task. I'm trying to return list of objects read from the database but cannot overcome some really annoying exceptions. The question is very simple? What's wrong with the picture? [ServiceContract] public interface IDBService { [OperationContract] string Ping(string name); [OperationContract] InitBDResult InitBD(); } public InitBDResult InitBD() { _dc = new CentralDC(); InitBDResult result = new InitBDResult(); result.ord = _dc.Orders.First(); return result; } [DataContract] public class InitBDResult { //[DataMember] //public List<Order> Orders { get; set; } [DataMember] public Order ord { get; set; } }

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• how to query list in powershell

  - by Varyanica

  add-type -Language CSharpVersion3 -TypeDefinition @" public class pack_code { public pack_code() {} public string code { get; set; } public string type { get; set; } } "@ $a = New-Object pack_code $a.code = "3" $a.type = "5" $b = New-Object pack_code $b.code = "2" $b.type = "5" $c = New-Object pack_code $c.code = "2" $c.type = "5" $d = New-Object pack_code $d.code = "1" $d.type = "1" $codes = New-Object 'System.Collections.Generic.List[object]' $codes.add($a) $codes.add($b) $codes.add($c) $codes.add($d) is there a way to select distinct from $codes and select the objects where type equals 1? How can i use linq with PowerShell?

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• Giving Users an Option Between UDP & TCP?

  - by cam

  After studying TCP/UDP difference all week, I just can't decide which to use. I have to send a large amount of constant sensor data, while at the same time sending important data that can't be lost. This made a perfect split for me to use both, then I read a paper (http://www.isoc.org/INET97/proceedings/F3/F3_1.HTM) that says using both causes packet/performance loss in the other. Is there any issue presented if I allow the user to choose which protocol to use (if I program both server side) instead of choosing myself? Are there any disadvantages to this? The only other solution I came up with is to use UDP, and if there seems to be too great of loss of packets, switch to TCP (client-side).

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• Silverlight Bind to TextBlock from RIA Services

  - by DaRKoN_

  I've a TextBlock that looks like so: <TextBlock Text="{Binding Name}" /> This is inside a <Canvas> with the DataContext set to MyClient which is in the ViewModel: public Client MyClient { get; private set; } // This is a RIA Entity, hence supports INotifyPropertyChanged public ViewModel() { MyClient = new Client(); LoadOperation<Client> loadClient = RiaContext.Load<Client>(RiaContext.GetClientsQuery()); loadClient.Completed += new EventHandler(loadClient_Completed); } void loadClient_Completed(object sender, EventArgs e) { MyClient = DB.Clients.Single(); } Setting MyClient like the above does not raise the PropertyChanged event. As such the UI is never updated.

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• Time diff calculations where date and time are in seperate columns

  - by pedalpete

  I've got a query where I'm trying to get the hours in duration (eg 6.5 hours) between two different times. In my database, time and date are held in different fields so I can efficiently query on just a startDate, or endDate as I never query specifically on time. My query looks like this SELECT COUNT(*), IFNULL(SUM(TIMEDIFF(endTime,startTime)),0) FROM events WHERE user=18 Sometimes an event will go overnight, so the difference between times needs to take into account the differences between the dates as well. I've been trying SELECT COUNT(*), IFNULL(SUM(TIMEDIFF(CONCAT(endDate,' ',endTime),CONCAT(startDate,' ',startTime))),0) FROM events WHERE user=18 Unfortunately I only get errors when I do this, and I can't seem to combine the two fields into a single timestamp.

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• How to push to git on EC2

  - by zengr

  I am trying to follow this instruction. I have a local git repo and when I do a git push, I need the repo to be pushed to my EC2 instance. But, in the above tutorial, when I do a git push origin master, I get Permission denied (publickey) error because I did not specify the identity file. Say, I login to EC2 like this: ssh -i my_key.pem [email protected] So, can I do something similar here to: git -i my_key.pem push origin master or set the identity file in .git/config So, how can I set it up?

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• t-sql - find differences for pk's in a single table (Self join?)

  - by Pace

  Hi Experts, My situation is this. I have a table of products with a pk "Parent" which has "Components" The data looks something like this Parent(PK) Component Car1 Wheel Car1 Tyre Car1 Roof Car2 Alloy Car2 Tyre Car2 Roof Car3 Alloy Car3 Tyre Car3 Roof Car3 Leather Seats Now what I want to do is some query that I can feed two codes in and see the differences... IE If I feed in "Car1", "Car2" it would return something like; Parent Component Car1 Wheel Car2 Alloy As this is the difference between the two. If I said "Car1", "Car3" I would expect; Parent Component Car1 Wheel Car3 Alloy Car3 Leather Seats Your help with this matter would be greatly appreciated.

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• Why use constants in programming?

  - by Adam N

  I've just been going back over a bit of C studying using Ivor Horton's Beginning C book. I got to the bit about declaring constants which seems to get mixed up with variables in the same sentence. Just to clarify, what is the difference in specifying constants and variables in C, and really, when do you need to use a constant instead of a variable? I know folks say to use a constant when the information doesn't change during program execution but I can't really think of a time when a variable couldn't be used instead. Thanks

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• Need some help in understanding SSL concepts

  - by user1115256

  I am new to SSL programming and finding some difficulties in understanding SSL concepts. I tried to get it through openssl site,but it is not much informative. Here is my doubts. What is difference between SSL Buffer and BIO buffer..? I mean layerwise detail will be very helpful. Can I use SSL_Write and SSL_Read without setting any BIO object to SSL object..? What exactly BIO_flush will do... I mean is it going to flush all the data to network buffer from BIO buffer.. ? If it is possible to do write and read data from SSL directly without using any BIO object then is it possible to flush the data from SSL buffer to network buffer by any means.. ? It would be very helpful if any body explain these things or giving any links where I can find answers to my questions.

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