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• Is it poor design to create objects that only execute code during the constructor?

  - by Curtix

  In my design I am using objects that evaluate a data record. The constructor is called with the data record and type of evaluation as parameters and then the constructor calls all of the object's code necessary to evaluate the record. This includes using the type of evaluation to find additional parameter-like data in a text file. There are in the neighborhood of 250 unique evaluation types that use the same or similar code and unique parameters coming from the text file. Some of these evaluations use different code so I benefit a lot from this model because I can use inheritance and polymorphism. Once the object is created there isn't any need to execute additional code on the object (at least for now) and it is used more like a struct; its kept on a list and 3 properties are used later. I think this design is the easiest to understand, code, and read. A logical alternative I guess would be using functions that return score structs, but you can't inherit from methods so it would make it kind of sloppy imo. I am using vb.net and these classes will be used in an asp.net web app as well as in a distributed app. thanks for your input

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• PHP access data of an object

  - by sea_1987

  I have an object of which I am looking to get a piece of data from, the object looks like this, Product Object ( [name] => Simon Test Cup [code] => 123456789 [category_id] => 3 [range_id] => 26 [price] => 10.00 [price_logo_add] => 0.25 [image_id] => 846 [rank] => [special_offer] => N [cartProps] => Array ( ) [section] => [vatPercentage] => 17.5 [id] => 551 [date_created] => 2010-05-25 12:46:57 [last_updated] => 2010-05-25 14:10:48 [user_id_updated] => 0 [_aliases] => Array ( [id] => 551 [date_created] => 2010-05-25 12:46:57 [date_updated] => 2010-05-25 14:10:48 [user_id_updated] => 0 [name] => Simon Test Cup [code] => 123456789 [category_id] => 3 [range_id] => 26 [price] => 10.00 [price_logo_add] => 0.25 [image_id] => 846 [range_image_id] => 848 [main_image_id] => 847 [rank] => [special_offer] => N ) [_default] => Array ( [special_offer] => N ) [_related] => Array ( [_related] => Array ( [range] => stdClass Object ( [key] => range [group] => _related [foreignKey] => range_id [indexName] => id [tableName] => cc_range [objectName] => Range [userFieldlyColName] => name [criteria] => id='{%range_id%}' [sqlPostfix] => [populateOnLoad] => [objects] => Array ( [26] => Range Object ( [name] => Shot glasses [url_name] => shot-glasses [description] => Personalized shot glasses make great commemorative gifts, souvenirs and wedding favours. Just select your favourite shape and send us a customization form with your logo. See our glassware sale page for info on free logo origination. [leader] => Customized shot glasses make great commemorative gifts, promotional items and wedding favours. Individual gift boxes are available so you can give the glasses away easily. [category_id] => 3 [site_id_csv] => [image_id_main] => 565 [image_id_thumb] => 566 [rank] => [site] => main [id] => 26 [date_created] => 2008-05-18 21:39:52 [last_updated] => 2009-02-03 13:49:10 [user_id_updated] => 0 [_aliases] => Array I am wanting to get the id from the [range] = stdClass Object

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• Returning Identity Value in SQL Server: @@IDENTITY Vs SCOPE_IDENTITY Vs IDENT_CURRENT

  - by Arefin Ali

  We have some common misconceptions on returning the last inserted identity value from tables. To return the last inserted identity value we have options to use @@IDENTITY or SCOPE_IDENTITY or IDENT_CURRENT function depending on the requirement but it will be a real mess if anybody uses anyone of these functions without knowing exact purpose. So here I want to share my thoughts on this. @@IDENTITY, SCOPE_IDENTITY and IDENT_CURRENT are almost similar functions in terms of returning identity value. They all return values that are inserted into an identity column. Earlier in SQL Server 7 we used to use @@IDENTITY to return the last inserted identity value because those days we don’t have functions like SCOPE_IDENTITY or IDENT_CURRENT but now we have these three functions. So let’s check out which one responsible for what. IDENT_CURRENT returns the last inserted identity value in a particular table. It never depends on a connection or the scope of the insert statement. IDENT_CURRENT function takes a table name as parameter. Here is the syntax to get the last inserted identity value in a particular table using IDENT_CURRENT function. SELECT IDENT_CURRENT('Employee') Both the @@IDENTITY and SCOPE_IDENTITY return the last inserted identity value created in any table in the current session. But there is little difference between these two i.e. SCOPE_IDENTITY returns value inserted only within the current scope whereas @@IDENTITY is not limited to any particular scope. Here are the syntaxes to get the last inserted identity value using these functions SELECT @@IDENTITY SELECT SCOPE_IDENTITY() Now let’s have a look at the following example. Suppose I have two tables called Employee and EmployeeLog. CREATE TABLE Employee ( EmpId NUMERIC(18, 0) IDENTITY(1,1) NOT NULL, EmpName VARCHAR(100) NOT NULL, EmpSal FLOAT NOT NULL, DateOfJoining DATETIME NOT NULL DEFAULT(GETDATE()) ) CREATE TABLE EmployeeLog ( EmpId NUMERIC(18, 0) IDENTITY(1,1) NOT NULL, EmpName VARCHAR(100) NOT NULL, EmpSal FLOAT NOT NULL, DateOfJoining DATETIME NOT NULL DEFAULT(GETDATE()) ) I have an insert trigger defined on the table Employee which inserts a new record in the EmployeeLog whenever a record insert in the Employee table. So Suppose I insert a new record in the Employee table using following statement: INSERT INTO Employee (EmpName,EmpSal) VALUES ('Arefin','1') The trigger will be fired automatically and insert a record in EmployeeLog. Here the scope of the insert statement and the trigger are different. In this situation if I retrieve last inserted identity value using @@IDENTITY, it will simply return the identity value from the EmployeeLog because it’s not limited to a particular scope. Now if I want to get the Employee table’s identity value then I need to use SCOPE_IDENTITY in this scenario. So the moral is always use SCOPE_IDENTITY to return the identity value of a recently created record in a sql statement or stored procedure. It’s safe and ensures bug free code.

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• Returning Identity Value in SQL Server: @@IDENTITY Vs SCOPE_IDENTITY Vs IDENT_CURRENT

  - by Arefin Ali

  We have some common misconceptions on returning the last inserted identity value from tables. To return the last inserted identity value we have options to use @@IDENTITY or SCOPE_IDENTITY or IDENT_CURRENT function depending on the requirement but it will be a real mess if anybody uses anyone of these functions without knowing exact purpose. So here I want to share my thoughts on this. @@IDENTITY, SCOPE_IDENTITY and IDENT_CURRENT are almost similar functions in terms of returning identity value. They all return values that are inserted into an identity column. Earlier in SQL Server 7 we used to use @@IDENTITY to return the last inserted identity value because those days we don’t have functions like SCOPE_IDENTITY or IDENT_CURRENT but now we have these three functions. So let’s check out which one responsible for what. IDENT_CURRENT returns the last inserted identity value in a particular table. It never depends on a connection or the scope of the insert statement. IDENT_CURRENT function takes a table name as parameter. Here is the syntax to get the last inserted identity value in a particular table using IDENT_CURRENT function. SELECT IDENT_CURRENT('Employee') Both the @@IDENTITY and SCOPE_IDENTITY return the last inserted identity value created in any table in the current session. But there is little difference between these two i.e. SCOPE_IDENTITY returns value inserted only within the current scope whereas @@IDENTITY is not limited to any particular scope. Here are the syntaxes to get the last inserted identity value using these functions SELECT @@IDENTITYSELECT SCOPE_IDENTITY() Now let’s have a look at the following example. Suppose I have two tables called Employee and EmployeeLog. CREATE TABLE Employee( EmpId NUMERIC(18, 0) IDENTITY(1,1) NOT NULL, EmpName VARCHAR(100) NOT NULL, EmpSal FLOAT NOT NULL, DateOfJoining DATETIME NOT NULL DEFAULT(GETDATE()))CREATE TABLE EmployeeLog( EmpId NUMERIC(18, 0) IDENTITY(1,1) NOT NULL, EmpName VARCHAR(100) NOT NULL, EmpSal FLOAT NOT NULL, DateOfJoining DATETIME NOT NULL DEFAULT(GETDATE())) I have an insert trigger defined on the table Employee which inserts a new record in the EmployeeLog whenever a record insert in the Employee table. So Suppose I insert a new record in the Employee table using following statement: INSERT INTO Employee (EmpName,EmpSal) VALUES ('Arefin','1') The trigger will be fired automatically and insert a record in EmployeeLog. Here the scope of the insert statement and the trigger are different. In this situation if I retrieve last inserted identity value using @@IDENTITY, it will simply return the identity value from the EmployeeLog because it’s not limited to a particular scope. Now if I want to get the Employee table’s identity value then I need to use SCOPE_IDENTITY in this scenario. So the moral is always use SCOPE_IDENTITY to return the identity value of a recently created record in a sql statement or stored procedure. It’s safe and ensures bug free code.

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• GAE python database object design for simple list of values

  - by Joey

  I'm really new to database object design so please forgive any weirdness in my question. Basically, I am use Google AppEngine (Python) and contructing an object to track user info. One of these pieces of data is 40 Achievement scores. Do I make a list of ints in the User object for this? Or do I make a separate entity with my user id, the achievement index (0-39) and the score and then do a query to grab these 40 items every time I want to get the user data in total? The latter approach seems more object oriented to me, and certainly better if I extend it to have more than just scores for these 40 achievements. However, considering that I might not extend it, should I even consider just doing a simple list of 40 ints in my user data? I would then forgo doing a query, getting the sorted list of achievements, reading the score from each one just to process a response etc. Is doing this latter approach just such a common practice and hand-waved as not even worth batting an eyelash at in terms of thinking it might be more costly or complex processing wise?

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• Error While Linking Multiple C Object files in Delphi 2007

  - by Ramnish

  Hello Everyone. I am new to delphi. I was trying to add C Object files in my Delphi project and link them directly since Delphi Supports C Object Linking. I got it working when i link a single Object file. But when i try to link multiple object files, i am getting error 'Unsatisfied forward or external declaration'. I have tried this in Delphi 2007 as well as XE.So what am i doing wrong here? Working Code: function a_function():Integer;cdecl; implementation {$Link 'a.obj'} function a_function():Integer;cdecl;external; end. Error Code: function a_function():Integer;cdecl; function b_function();Integer;cdecl; function c_function();Integer;cdecl; implementation {$LINK 'a.obj'} {$LINK 'b.obj'} {$LINK 'c.obj'} function a_function():Integer;cdecl;external; function b_function();Integer;cdecl;external; function c_function();Integer;cdecl;external; end.

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• Reading DATA from an OBJECT asp.net MVC C#

  - by kalyan

  Hi, I am new to the MVC and I am stuck with a wierd situation. I have to read the Data from the type object and I tried different ways and I couldn't get a solution.Please help. IList<User> u = new UserRepository().Getuser(Name.ToUpper(), UserName.ToUpper(), UserCertNumber.ToUpper(), Date.ToUpper(), UserType.ToUpper(), Company.ToUpper(), PageNumber, Orderby, SearchALL.ToUpper(), PrintAllPages.ToUpper()); object[] users = new object[u.Count]; for (int i = 0; i < u.Count; i++) { users[i] = new { Id = u[i].UserId, Title = u[i].Title, FirstName = u[i].FirstName, LastName = u[i].LastName, Privileges = (from apps in u[i].UserPrivileges select new { PrivilegeId = apps.Privilege.PrivilegeId, PrivilegeName = apps.Privilege.Name, DeactiveDate = apps.DeactiveDate }), Status = (from status in u[i].UserStatus select new { StatusId = status.Status.StatusId, StatusName = status.Status.StatusName, DeactiveDate = status.DeactiveDate }), ActiveDate = u[i].ActiveDate, UserName = u[i].Email, UserCN = (from cert in u[i].UserCertificates select new { CertificateNumber = cert.CertificateNumber, DeactiveDate = cert.DeactiveDate }), Company = u[i].Company.Name }; } string x = ""; string y = ""; var report = users; foreach (var r in report) { x = r[0].....; i want to assign the values from the report to something else and I am not able to read the data from the report object. Please help. } Thank you.

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• Cannot convert object, recieved from ajax call, into a long

  - by Matt

  I'm using Asp.Net-Mvc, I have this method in my controller: [AcceptVerbs(HttpVerbs.Post)] public ActionResult LinkAccount(string site, object id) { return this.Json(id); } Here's the ajax method that calls it: $.post("/Account/LinkAccount", { site: "Facebook", id: FB.Facebook.apiClient.get_session().uid }, function(result) { alert(result); }, "json" ); returning this.Json(id); makes the alert work... it alerts 7128383 (something similar to that). but if I change this.Json(id) to this.Json(Conver.ToInt64(id)); the alert does not fire... Any idea of why I can't convert an object received from an object to a long? I already know changing the LinkAccount method to accept a long instead works just fine. It's just I need it as an object because some other sites I'm linking up have strings for id's rather than longs. UPDATE: I tried running the code on localhost so I could set a breakpoint. First I changed the line return this.Json(Convert.ToInt64(id)); to long idAsLong = Convert.ToInt64(id));. Here's what the debugger is telling me: When I hover over id it says: "id | {string[1]}" and when I press the plus button is shows: "[0] | '7128383'" When I hover over idAsLong, it says: "idAsLong | 0" Why isn't it converting it properly?

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• Get Instance ID of an Object in PHP

  - by Alix Axel

  I've learn a while ago on StackOverflow that we can get the "instance ID" of any resource, for instance: var_dump(intval(curl_init())); // int(2) var_dump(intval(finfo_open())); // int(3) var_dump(intval(curl_init())); // int(4) var_dump(intval(finfo_open())); // int(5) var_dump(intval(curl_init())); // int(6) I need something similar but applied to classes: var_dump(intval(new stdClass())); // int(1) var_dump(intval(new stdClass())); // int(1) var_dump(intval(new stdClass())); // int(1) var_dump(intval(new stdClass())); // int(1) var_dump(intval(new stdClass())); // int(1) I'm using stdClass just has an example here, but as you can see, it's not the output I was hoping for. I just did some more testing and I found that var_dump() can see the instance ID of an object: var_dump($a = new stdClass()); // object(stdClass)#1 (0) { } var_dump($b = new stdClass()); // object(stdClass)#2 (0) { } var_dump($c = new stdClass()); // object(stdClass)#3 (0) { } The same happens with resources of course: var_dump(curl_init()); // resource(2) of type (curl) var_dump(curl_init()); // resource(3) of type (curl) var_dump(curl_init()); // resource(4) of type (curl) Is there any way to achieve the same effect in PHP?

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• How to parse (infinite) nested object notation?

  - by kyogron

  I am currently breaking my head about transforming this object hash: "food": { "healthy": { "fruits": ['apples', 'bananas', 'oranges'], "vegetables": ['salad', 'onions'] }, "unhealthy": { "fastFood": ['burgers', 'chicken', 'pizza'] } } to something like this: food:healthy:fruits:apples food:healthy:fruits:bananas food:healthy:fruits:oranges food:healthy:vegetables:salad food:healthy:vegetables:onions food:unhealthy:fastFood:burgers food:unhealthy:fastFood:chicken food:unhealthy:fastFood:pizza In theory it actually is just looping through the object while keeping track of the path and the end result. Unfortunately I do not know how I could loop down till I have done all nested. var path; var pointer; function loop(obj) { for (var propertyName in obj) { path = propertyName; pointer = obj[propertyName]; if (pointer typeof === 'object') { loop(pointer); } else { break; } } }; function parse(object) { var collection = []; }; There are two issues which play each out: If I use recurse programming it looses the state of the properties which are already parsed. If I do not use it I cannot parse infinite. Is there some idea how to handle this? Regards

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• JPA: persisting object, parent is ok but child not updated

  - by James.Elsey

  Hello, I have my domain object, Client, I've got a form on my JSP that is pre-populated with its data, I can take in amended values, and persist the object. Client has an abstract entity called MarketResearch, which is then extended by one of three more concrete sub-classes. I have a form to pre-populate some MarketResearch data, but when I make changes and try to persist the Client, it doesn't get saved, can someone give me some pointers on where I've gone wrong? My 3 domain classes are as follows (removed accessors etc) public class Client extends NamedEntity { @OneToOne @JoinColumn(name = "MARKET_RESEARCH_ID") private MarketResearch marketResearch; ... } @Inheritance(strategy = InheritanceType.JOINED) public abstract class MarketResearch extends AbstractEntity { ... } @Entity(name="MARKETRESEARCHLG") public class MarketResearchLocalGovernment extends MarketResearch { @Column(name = "CURRENT_HR_SYSTEM") private String currentHRSystem; ... } This is how I'm persisting public void persistClient(Client client) { if (client.getId() != null) { getJpaTemplate().merge(client); getJpaTemplate().flush(); } else { getJpaTemplate().persist(client); } } To summarize, if I change something on the parent object, it persists, but if I change something on the child object it doesn't. Have I missed something blatantly obvious? Thanks

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• Get the parent class of a null object (C# Reflection)

  - by Nick

  How would I get the parent class of an object that has a value of null? For example... 'Class A' contains 'int? i' which is not set to any value when the class is created. Then in some other place in the code I want to pass in 'i' as a parameter to some function. Using 'i' as the only info, I want to be able to figure out that 'Class A' "owns" 'i'. The reason for this is because 'Class A' also contains some other object, and I want to call this other object's value from that same function mentioned in the above paragraph. Could also be: public class A { public class B { public int? i; public int? j; } B classBInstance = new B(); public string s; } { ... A someClassAInstance = new A(); ... doSomething(someClassAInstance.classBInstance.i); ... } public static bool doSomething(object theObject) { string s = /* SOMETHING on theObject to get to "s" from Class A */; int someValue = (int)theObject; }

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• List of Commonly Used Value Types in XNA Games

  - by Michael B. McLaughlin

  Most XNA programmers are concerned about generating garbage. More specifically about allocating GC-managed memory (GC stands for “garbage collector” and is both the name of the class that provides access to the garbage collector and an acronym for the garbage collector (as a concept) itself). Two of the major target platforms for XNA (Windows Phone 7 and Xbox 360) use variants of the .NET Compact Framework. On both variants, the GC runs under various circumstances (Windows Phone 7 and Xbox 360). Of concern to XNA programmers is the fact that it runs automatically after a fixed amount of GC-managed memory has been allocated (currently 1MB on both systems). Many beginning XNA programmers are unaware of what constitutes GC-managed memory, though. So here’s a quick overview. In .NET, there are two different “types” of types: value types and reference types. Only reference types are managed by the garbage collector. Value types are not managed by the garbage collector and are instead managed in other ways that are implementation dependent. For purposes of XNA programming, the important point is that they are not managed by the GC and thus do not, by themselves, increment that internal 1 MB allocation counter. (n.b. Structs are value types. If you have a struct that has a reference type as a member, then that reference type, when instantiated, will still be allocated in the GC-managed memory and will thus count against the 1 MB allocation counter. Putting it in a struct doesn’t change the fact that it gets allocated on the GC heap, but the struct itself is created outside of the GC’s purview). Both value types and reference types use the keyword ‘new’ to allocate a new instance of them. Sometimes this keyword is hidden by a method which creates new instances for you, e.g. XmlReader.Create. But the important thing to determine is whether or not you are dealing with a value types or a reference type. If it’s a value type, you can use the ‘new’ keyword to allocate new instances of that type without incrementing the GC allocation counter (except as above where it’s a struct with a reference type in it that is allocated by the constructor, but there are no .NET Framework or XNA Framework value types that do this so it would have to be a struct you created or that was in some third-party library you were using for that to even become an issue). The following is a list of most all of value types you are likely to use in a generic XNA game: AudioCategory (used with XACT; not available on WP7) AvatarExpression (Xbox 360 only, but exposed on Windows to ease Xbox development) bool BoundingBox BoundingSphere byte char Color DateTime decimal double any enum (System.Enum itself is a class, but all enums are value types such that there are no GC allocations for enums) float GamePadButtons GamePadCapabilities GamePadDPad GamePadState GamePadThumbSticks GamePadTriggers GestureSample int IntPtr (rarely but occasionally used in XNA) KeyboardState long Matrix MouseState nullable structs (anytime you see, e.g. int? something, that ‘?’ denotes a nullable struct, also called a nullable type) Plane Point Quaternion Ray Rectangle RenderTargetBinding sbyte (though I’ve never seen it used since most people would just use a short) short TimeSpan TouchCollection TouchLocation TouchPanelCapabilities uint ulong ushort Vector2 Vector3 Vector4 VertexBufferBinding VertexElement VertexPositionColor VertexPositionColorTexture VertexPositionNormalTexture VertexPositionTexture Viewport So there you have it. That’s not quite a complete list, mind you. For example: There are various structs in the .NET framework you might make use of. I left out everything from the Microsoft.Xna.Framework.Graphics.PackedVector namespace, since everything in there ventures into the realm of advanced XNA programming anyway (n.b. every single instantiable thing in that namespace is a struct and thus a value type; there are also two interfaces but interfaces cannot be instantiated at all and thus don’t figure in to this discussion). There are so many enums you’re likely to use (PlayerIndex, SpriteSortMode, SpriteEffects, SurfaceFormat, etc.) that including them would’ve flooded the list and reduced its utility. So I went with “any enum” and trust that you can figure out what the enums are (and it’s rare to use ‘new’ with an enum anyway). That list also doesn’t include any of the pre-defined static instances of some of the classes (e.g. BlendState.AlphaBlend, BlendState.Opaque, etc.) which are already allocated such that using them doesn’t cause any new allocations and therefore doesn’t increase that 1 MB counter. That list also has a few misleading things. VertexElement, VertexPositionColor, and all the other vertex types are structs. But you’re only likely to ever use them as an array (for use with VertexBuffer or DynamicVertexBuffer), and all arrays are reference types (even arrays of value types such as VertexPositionColor[ ] or int[ ]). * So that’s it for now. The note below may be a bit confusing (it deals with how the GC works and how arrays are managed in .NET). If so, you can probably safely ignore it for now but feel free to ask any questions regardless. * Arrays of value types (where the value type doesn’t contain any reference type members) are much faster for the GC to examine than arrays of reference types, so there is a definite benefit to using arrays of value types where it makes sense. But creating arrays of value types does cause the GC’s allocation counter to increase. Indeed, allocating a large array of a value type is one of the quickest ways to increment the allocation counter since a .NET array is a sequential block of memory. An array of reference types is just a sequential block of references (typically 4 bytes each) while an array of value types is a sequential block of instances of that type. So for an array of Vector3s it would be 12 bytes each since each float is 4 bytes and there are 3 in a Vector3; for an array of VertexPositionNormalTexture structs it would typically be 32 bytes each since it has two Vector3s and a Vector2. (Note that there are a few additional bytes taken up in the creation of an array, typically 12 but sometimes 16 or possibly even more, which depend on the implementation details of the array type on the particular platform the code is running on).

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• dynamically horizontal scalable key value store

  - by Zubair

  Hi, Is there a key value store that will give me the following: Allow me to simply add and remove nodes and will redstribute the data automatically Allow me to remove nodes and still have 2 extra data nodes to provide redundancy Allow me to store text or images up to 1GB in size Can store small size data up to 100TB of data Fast (so will allow queries to be performed on top of it) Make all this transparent to the client Works on Ubuntu/FreeBSD or Mac Free or open source I basically want something I can use a "single", and not have to worry about having memcached, a db, and several storage components so yes, I do want a database "silver bullet" you could say. Thanks Zubair Answers so far: MogileFS on top of BackBlaze - As far as I can see this is just a filesystem, and after some research it only seems to be appropriate for large image files Tokyo Tyrant - Needs lightcloud. This doesn't auto scale as you add new nodes. I did look into this and it seems it is very fast for queries which fit onto a single node though Riak - This is one I am looking into myself, but I don't have any results yet Amazon S3 - Is anyone using this as their sole persistance layer in production? From what I have seen it seems to be used for storage of images as complex queries are too expensive @shaman suggested Cassandra - definitely one I am looking into So far it seems that there is no database or key value store that fulfills the criteria I mentioned, not even after offering a bounty of 100 points did the question get answered!

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• Converting non-delimited text into name/value pairs in Delphi

  - by robsoft

  I've got a text file that arrives at my application as many lines of the following form: <row amount="192.00" store="10" transaction_date="2009-10-22T12:08:49.640" comp_name="blah " comp_ref="C65551253E7A4589A54D7CCD468D8AFA" name="Accrington "/> and I'd like to turn this 'row' into a series of name/value pairs in a given TStringList (there could be dozens of these <row>s in the file, so eventually I will want to iterate through the file breaking each row into name/value pairs in turn). The problem I've got is that the data isn't obviously delimited (technically, I suppose it's space delimited). Now if it wasn't for the fact that some of the values contain leading or trailing spaces, I could probably make a few reasonable assumptions and code something to break a row up based on spaces. But as the values themselves may or may not contain spaces, I don't see an obvious way to do this. Delphi' TStringList.CommaText doesn't help, and I've tried playing around with Delimiter but I get caught-out by the spaces inside the values each time. Does anyone have a clever Delphi technique for turning the sample above into something resembling this? ; amount="192.00" store="10" transaction_date="2009-10-22T12:08:49.640" comp_name="blah " comp_ref="C65551253E7A4589A54D7CCD468D8AFA" name="Accrington " Unfortunately, as is usually the case with this kind of thing, I don't have any control over the format of the data to begin with - I can't go back and 'make' it comma delimited at source, for instance. Although I guess I could probably write some code to turn it into comma delimited - would rather find a nice way to work with what I have though. This would be in Delphi 2007, if it makes any difference.

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• Retrieve the Value of An Integer Variable

  - by Abluescarab

  This is probably easily figured out (I feel very stupid right now), but I can't find a solution anywhere, for some reason. Perhaps I'm not searching for the right thing. And maybe it's in some beginner tutorial I haven't watched. Anyway, I was wondering how to retrieve the value of an integer variable in C++? I know you can use cin.getline() for string variables, but I received an error message when I attempted that with an integer variable (and rightfully so, I know it was wrong, but I was looking for a solution). My project is a Win32 console application. What I'm trying to do is ask a user to input a number, stored in the variable n. Then I take the value of n and perform various math functions with it. In my header file, I have string, windows, iostream, stdio, math, and fstream. Do I need to add another library? There's not much more to tell. I can post my code if I must. EDIT: cout << "TEST SINE"; cout << "\nPlease enter a number.\n\n"; cin >> n; break; Here's the code I'm trying to use. Is this all I need to do? If so, how do I incorporate the variable so I can test it using sin, cos, and tan? Yet again, thanks ahead of time.

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• Reverse-engineer a Javascript object?

  - by TruMan1

  I have a Javascript object that I want to pass in more parameters, but the documentation is non-existant. My only option seems to be to reverse engineer the Javascript object to see what parameters and values I can pass in. For example, I want to see if there is a "zoom" parameter for the object and what values I can pass into the "mapType" parameter: <script type="text/javascript" src="http://maps.google.com/maps?oe=utf-8&amp;file=api&amp;v=2&amp;key=your-gmap-key"></script> <script type="text/javascript" src="https://share.findmespot.com/spot-widget/js/SpotMain.js"></script> <script type="text/javascript"> var widget = new Spot.Ui.LiveWidget({ renderTo: "spot-live-widget", feeds: [ "0Wl3diTJcqqvncI6NNsoqJV5ygrFtQfBB" ], height: 400, width: 500, mapType: "physical" }); </script> <div id="spot-live-widget"/> Any ideas on how to do that?

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• How to determine whether a dependency object implements a given dependency property (C# / WPF)

  - by Tim Coulter

  I am working with the classes in the System.Windows.Documents namespace, trying to write some generic code that will conditionally set the value of certain dependency properties, depending on whether these properties exist on a given class. For example, the following method assigns an arbitrary value to the Padding property of the passed FrameworkContentElement: void SetElementPadding(FrameworkContentElement element) { element.SetValue(Block.PaddingProperty, new Thickness(155d)); } However, not all concrete implementations of FrameworkContentElement have a Padding property (Paragraph does but Span does not) so I would expect the property assignment to succeed for types that implement this property and to be silently ignored for types that do not. But it seems that the above property assignment succeeds for instances of all derivatives of FrameworkContentElement, regardless of whether they implement the Padding property. I make this assumption because I have always been able to read back the assigned value. I assume there is some flaw in the way I am assigning property values. What should I do to ensure that a given dependency property assignment is ignored by classes that do not implement that property? Many thanks for your advice. Tim

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• How do I assign a number value to a non-numerical value in Excel

  - by Keyslinger

  Greetings I have an some survey responses with values like "VU" for "Very Unlikely" and "S" for Sometimes. Each survey response occupies a cell. For each cell containing a survey response, I want to fill another cell with a corresponding number. For example, for every cell containing "VU" I want to fill a corresponding cell with the number 1. How is this done?

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• Why is this giving me 2 different sets of timezones?

  - by chobo2

  Hi I have this line to get all the timezones Dictionary<string, TimeZoneInfo> storeZoneName = TimeZoneInfo.GetSystemTimeZones().ToDictionary(z => z.DisplayName); Now when I upload I try it on my local machine I get this (UTC-12:00) International Date Line West (UTC-11:00) Coordinated Universal Time-11 (UTC-11:00) Samoa (UTC-10:00) Hawaii (UTC-09:00) Alaska (UTC-08:00) Baja California (UTC-08:00) Pacific Time (US & Canada) (UTC-07:00) Arizona (UTC-07:00) Chihuahua, La Paz, Mazatlan (UTC-07:00) Mountain Time (US & Canada) (UTC-06:00) Central America (UTC-06:00) Central Time (US & Canada) (UTC-06:00) Guadalajara, Mexico City, Monterrey (UTC-06:00) Saskatchewan (UTC-05:00) Bogota, Lima, Quito (UTC-05:00) Eastern Time (US & Canada) (UTC-05:00) Indiana (East) (UTC-04:30) Caracas (UTC-04:00) Asuncion (UTC-04:00) Atlantic Time (Canada) (UTC-04:00) Cuiaba (UTC-04:00) Georgetown, La Paz, Manaus, San Juan (UTC-04:00) Santiago (UTC-03:30) Newfoundland (UTC-03:00) Brasilia (UTC-03:00) Buenos Aires (UTC-03:00) Cayenne, Fortaleza (UTC-03:00) Greenland (UTC-03:00) Montevideo (UTC-02:00) Coordinated Universal Time-02 (UTC-02:00) Mid-Atlantic (UTC-01:00) Azores (UTC-01:00) Cape Verde Is. (UTC) Casablanca (UTC) Coordinated Universal Time (UTC) Dublin, Edinburgh, Lisbon, London (UTC) Monrovia, Reykjavik (UTC+01:00) Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna (UTC+01:00) Belgrade, Bratislava, Budapest, Ljubljana, Prague (UTC+01:00) Brussels, Copenhagen, Madrid, Paris (UTC+01:00) Sarajevo, Skopje, Warsaw, Zagreb (UTC+01:00) West Central Africa (UTC+02:00) Amman (UTC+02:00) Athens, Bucharest, Istanbul (UTC+02:00) Beirut (UTC+02:00) Cairo (UTC+02:00) Harare, Pretoria (UTC+02:00) Helsinki, Kyiv, Riga, Sofia, Tallinn, Vilnius (UTC+02:00) Jerusalem (UTC+02:00) Minsk (UTC+02:00) Windhoek (UTC+03:00) Baghdad (UTC+03:00) Kuwait, Riyadh (UTC+03:00) Moscow, St. Petersburg, Volgograd (UTC+03:00) Nairobi (UTC+03:30) Tehran (UTC+04:00) Abu Dhabi, Muscat (UTC+04:00) Baku (UTC+04:00) Port Louis (UTC+04:00) Tbilisi (UTC+04:00) Yerevan (UTC+04:30) Kabul (UTC+05:00) Ekaterinburg (UTC+05:00) Islamabad, Karachi (UTC+05:00) Tashkent (UTC+05:30) Chennai, Kolkata, Mumbai, New Delhi (UTC+05:30) Sri Jayawardenepura (UTC+05:45) Kathmandu (UTC+06:00) Astana (UTC+06:00) Dhaka (UTC+06:00) Novosibirsk (UTC+06:30) Yangon (Rangoon) (UTC+07:00) Bangkok, Hanoi, Jakarta (UTC+07:00) Krasnoyarsk (UTC+08:00) Beijing, Chongqing, Hong Kong, Urumqi (UTC+08:00) Irkutsk (UTC+08:00) Kuala Lumpur, Singapore (UTC+08:00) Perth (UTC+08:00) Taipei (UTC+08:00) Ulaanbaatar (UTC+09:00) Osaka, Sapporo, Tokyo (UTC+09:00) Seoul (UTC+09:00) Yakutsk (UTC+09:30) Adelaide (UTC+09:30) Darwin (UTC+10:00) Brisbane (UTC+10:00) Canberra, Melbourne, Sydney (UTC+10:00) Guam, Port Moresby (UTC+10:00) Hobart (UTC+10:00) Vladivostok (UTC+11:00) Magadan, Solomon Is., New Caledonia (UTC+12:00) Auckland, Wellington (UTC+12:00) Coordinated Universal Time+12 (UTC+12:00) Fiji (UTC+12:00) Petropavlovsk-Kamchatsky (UTC+13:00) Nuku'alofa When I run it on a different local machine or my server I have this. <option value="(GMT) Casablanca">(GMT) Casablanca</option> <option value="(GMT) Greenwich Mean Time : Dublin, Edinburgh, Lisbon, London">(GMT) Greenwich Mean Time : Dublin, Edinburgh, Lisbon, London</option> <option value="(GMT) Monrovia, Reykjavik">(GMT) Monrovia, Reykjavik</option> <option value="(GMT+01:00) Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna">(GMT+01:00) Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna</option> <option value="(GMT+01:00) Belgrade, Bratislava, Budapest, Ljubljana, Prague">(GMT+01:00) Belgrade, Bratislava, Budapest, Ljubljana, Prague</option> <option value="(GMT+01:00) Brussels, Copenhagen, Madrid, Paris">(GMT+01:00) Brussels, Copenhagen, Madrid, Paris</option> <option value="(GMT+01:00) Sarajevo, Skopje, Warsaw, Zagreb">(GMT+01:00) Sarajevo, Skopje, Warsaw, Zagreb</option> <option value="(GMT+01:00) West Central Africa">(GMT+01:00) West Central Africa</option> <option value="(GMT+02:00) Amman">(GMT+02:00) Amman</option> <option value="(GMT+02:00) Athens, Bucharest, Istanbul">(GMT+02:00) Athens, Bucharest, Istanbul</option> <option value="(GMT+02:00) Beirut">(GMT+02:00) Beirut</option> <option value="(GMT+02:00) Cairo">(GMT+02:00) Cairo</option> <option value="(GMT+02:00) Harare, Pretoria">(GMT+02:00) Harare, Pretoria</option> <option value="(GMT+02:00) Helsinki, Kyiv, Riga, Sofia, Tallinn, Vilnius">(GMT+02:00) Helsinki, Kyiv, Riga, Sofia, Tallinn, Vilnius</option> <option value="(GMT+02:00) Jerusalem">(GMT+02:00) Jerusalem</option> <option value="(GMT+02:00) Minsk">(GMT+02:00) Minsk</option> <option value="(GMT+02:00) Windhoek">(GMT+02:00) Windhoek</option> <option value="(GMT+03:00) Baghdad">(GMT+03:00) Baghdad</option> <option value="(GMT+03:00) Kuwait, Riyadh">(GMT+03:00) Kuwait, Riyadh</option> <option value="(GMT+03:00) Moscow, St. Petersburg, Volgograd">(GMT+03:00) Moscow, St. Petersburg, Volgograd</option> <option value="(GMT+03:00) Nairobi">(GMT+03:00) Nairobi</option> <option value="(GMT+03:00) Tbilisi">(GMT+03:00) Tbilisi</option> <option value="(GMT+03:30) Tehran">(GMT+03:30) Tehran</option> <option value="(GMT+04:00) Abu Dhabi, Muscat">(GMT+04:00) Abu Dhabi, Muscat</option> <option value="(GMT+04:00) Baku">(GMT+04:00) Baku</option> <option value="(GMT+04:00) Port Louis">(GMT+04:00) Port Louis</option> <option value="(GMT+04:00) Yerevan">(GMT+04:00) Yerevan</option> <option value="(GMT+04:30) Kabul">(GMT+04:30) Kabul</option> <option value="(GMT+05:00) Ekaterinburg">(GMT+05:00) Ekaterinburg</option> <option value="(GMT+05:00) Islamabad, Karachi">(GMT+05:00) Islamabad, Karachi</option> <option value="(GMT+05:00) Tashkent">(GMT+05:00) Tashkent</option> <option value="(GMT+05:30) Chennai, Kolkata, Mumbai, New Delhi">(GMT+05:30) Chennai, Kolkata, Mumbai, New Delhi</option> <option value="(GMT+05:30) Sri Jayawardenepura">(GMT+05:30) Sri Jayawardenepura</option> <option value="(GMT+05:45) Kathmandu">(GMT+05:45) Kathmandu</option> <option value="(GMT+06:00) Almaty, Novosibirsk">(GMT+06:00) Almaty, Novosibirsk</option> <option value="(GMT+06:00) Astana, Dhaka">(GMT+06:00) Astana, Dhaka</option> <option value="(GMT+06:30) Yangon (Rangoon)">(GMT+06:30) Yangon (Rangoon)</option> <option value="(GMT+07:00) Bangkok, Hanoi, Jakarta">(GMT+07:00) Bangkok, Hanoi, Jakarta</option> <option value="(GMT+07:00) Krasnoyarsk">(GMT+07:00) Krasnoyarsk</option> <option value="(GMT+08:00) Beijing, Chongqing, Hong Kong, Urumqi">(GMT+08:00) Beijing, Chongqing, Hong Kong, Urumqi</option> <option value="(GMT+08:00) Irkutsk, Ulaan Bataar">(GMT+08:00) Irkutsk, Ulaan Bataar</option> <option value="(GMT+08:00) Kuala Lumpur, Singapore">(GMT+08:00) Kuala Lumpur, Singapore</option> <option value="(GMT+08:00) Perth">(GMT+08:00) Perth</option> <option value="(GMT+08:00) Taipei">(GMT+08:00) Taipei</option> <option value="(GMT+09:00) Osaka, Sapporo, Tokyo">(GMT+09:00) Osaka, Sapporo, Tokyo</option> <option value="(GMT+09:00) Seoul">(GMT+09:00) Seoul</option> <option value="(GMT+09:00) Yakutsk">(GMT+09:00) Yakutsk</option> <option value="(GMT+09:30) Adelaide">(GMT+09:30) Adelaide</option> <option value="(GMT+09:30) Darwin">(GMT+09:30) Darwin</option> <option value="(GMT+10:00) Brisbane">(GMT+10:00) Brisbane</option> <option value="(GMT+10:00) Canberra, Melbourne, Sydney">(GMT+10:00) Canberra, Melbourne, Sydney</option> <option value="(GMT+10:00) Guam, Port Moresby">(GMT+10:00) Guam, Port Moresby</option> <option value="(GMT+10:00) Hobart">(GMT+10:00) Hobart</option> <option value="(GMT+10:00) Vladivostok">(GMT+10:00) Vladivostok</option> <option value="(GMT+11:00) Magadan, Solomon Is., New Caledonia">(GMT+11:00) Magadan, Solomon Is., New Caledonia</option> <option value="(GMT+12:00) Auckland, Wellington">(GMT+12:00) Auckland, Wellington</option> <option value="(GMT+12:00) Fiji, Kamchatka, Marshall Is.">(GMT+12:00) Fiji, Kamchatka, Marshall Is.</option> <option value="(GMT+13:00) Nuku'alofa">(GMT+13:00) Nuku'alofa</option> <option value="(GMT-01:00) Azores">(GMT-01:00) Azores</option> <option value="(GMT-01:00) Cape Verde Is.">(GMT-01:00) Cape Verde Is.</option> <option value="(GMT-02:00) Mid-Atlantic">(GMT-02:00) Mid-Atlantic</option> <option value="(GMT-03:00) Brasilia">(GMT-03:00) Brasilia</option> <option value="(GMT-03:00) Buenos Aires">(GMT-03:00) Buenos Aires</option> <option value="(GMT-03:00) Georgetown">(GMT-03:00) Georgetown</option> <option value="(GMT-03:00) Greenland">(GMT-03:00) Greenland</option> <option value="(GMT-03:00) Montevideo">(GMT-03:00) Montevideo</option> <option value="(GMT-03:30) Newfoundland">(GMT-03:30) Newfoundland</option> <option value="(GMT-04:00) Atlantic Time (Canada)">(GMT-04:00) Atlantic Time (Canada)</option> <option value="(GMT-04:00) La Paz">(GMT-04:00) La Paz</option> <option value="(GMT-04:00) Manaus">(GMT-04:00) Manaus</option> <option value="(GMT-04:00) Santiago">(GMT-04:00) Santiago</option> <option value="(GMT-04:30) Caracas">(GMT-04:30) Caracas</option> <option value="(GMT-05:00) Bogota, Lima, Quito, Rio Branco">(GMT-05:00) Bogota, Lima, Quito, Rio Branco</option> <option value="(GMT-05:00) Eastern Time (US &amp; Canada)">(GMT-05:00) Eastern Time (US &amp; Canada)</option> <option value="(GMT-05:00) Indiana (East)">(GMT-05:00) Indiana (East)</option> <option value="(GMT-06:00) Central America">(GMT-06:00) Central America</option> <option value="(GMT-06:00) Central Time (US &amp; Canada)">(GMT-06:00) Central Time (US &amp; Canada)</option> <option value="(GMT-06:00) Guadalajara, Mexico City, Monterrey">(GMT-06:00) Guadalajara, Mexico City, Monterrey</option> <option value="(GMT-06:00) Saskatchewan">(GMT-06:00) Saskatchewan</option> <option value="(GMT-07:00) Arizona">(GMT-07:00) Arizona</option> <option value="(GMT-07:00) Chihuahua, La Paz, Mazatlan">(GMT-07:00) Chihuahua, La Paz, Mazatlan</option> <option value="(GMT-07:00) Mountain Time (US &amp; Canada)">(GMT-07:00) Mountain Time (US &amp; Canada)</option> <option value="(GMT-08:00) Pacific Time (US &amp; Canada)">(GMT-08:00) Pacific Time (US &amp; Canada)</option> <option value="(GMT-08:00) Tijuana, Baja California">(GMT-08:00) Tijuana, Baja California</option> <option value="(GMT-09:00) Alaska">(GMT-09:00) Alaska</option> <option value="(GMT-10:00) Hawaii">(GMT-10:00) Hawaii</option> <option value="(GMT-11:00) Midway Island, Samoa">(GMT-11:00) Midway Island, Samoa</option> <option value="(GMT-12:00) International Date Line West">(GMT-12:00) International Date Line West</option> They are different. Same line of code but one is GMT and one is UTC. How can I force it to be always the same? Also I want to have a default choice of "UTC" but I am not sure what the diff is between this (UTC-11:00) Coordinated Universal Time-11 and this (UTC-02:00) Coordinated Universal Time-02

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• Null object that is not null

  - by Guillaume

  Hello, I use 2 threads to act like a produce/consumer using double queue (http://www.codeproject.com/KB/threads/DoubleQueue.aspx). Sometimes in my 2nd thread, I get an object that is NULL but it should not be as I filled it in the first thread. I tried this: if(myObject.Data == null) { Console.WriteLine("Null Object") // <-- Breakpoint here } When I my break point hits, I can watch myObject.Data and indeed it's NULL, but when I hit F10 and then go to the next line (which is } ) myObject.Data is not NULL. I also added a lock on myObject before if .... to be sure that no one whould use this object. How is that possible and what can I do ?

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• In ParallelPython, a method of an object ( object.func() ) fails to manipulate a variable of an object ( object.value )

  - by mehmet.ali.anil

  With parallelpython, I am trying to convert my old serial code to parallel, which heavily relies on objects that have methods that change that object's variables. A stripped example in which I omit the syntax in favor of simplicity: class Network: self.adjacency_matrix = [ ... ] self.state = [ ... ] self.equilibria = [ ... ] ... def populate_equilibria(self): # this function takes every possible value that self.state can be in # runs the boolean dynamical system # and writes an integer within self.equilibria for each self.state # doesn't return anything I call this method as: Code: j1 = jobserver.submit(net2.populate_equilibria,(),(),("numpy as num")) The job is sumbitted, and I know that a long computation takes place, so I speculate that my code is ran. The problem is, i am new to parallelpython , I was expecting that, when the method is called, the variable net2.equilibria would be written accordingly, and I would get a revised object (net2) . That is how my code works, independent objects with methods that act upon the object's variables. Rather, though the computation is apparent, and reasonably timed, the variable net2.equilibria remains unchanged. As if PP only takes the function and the object, computes it elsewhere, but never returns the object, so I am left with the old one. What do I miss? Thanks in advance.

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• How Can I Check an Object to See its Type and Return A Casted Object

  - by Russ Bradberry

  I have method to which I pass an object. In this method I check it's type and depending on the type I do something with it and return a Long. I have tried every which way I can think of to do this and I always get several compiler errors telling me it expects a certain object but gets another. Can someone please explain to me what I am doing wrong and guide me in the right direction? What I have tried thus far is below: override def getInteger(obj:Object) = { if (obj.isInstanceOf[Object]) null else if (obj.isInstanceOf[Number]) (obj:Number).longValue() else if (obj.isInstanceOf[Boolean]) if (obj:Boolean) 1 else 0 else if (obj.isInstanceOf[String]) if ((obj:String).length == 0 | (obj:String) == "null") null else try { Long.parse(obj:String) } catch { case e: Exception => throw new ValueConverterException("value \"" + obj.toString() + "\" of type " + obj.getClass().getName() + " is not convertible to Long") } }

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• How to include a child object's child object in Entity Framework 5

  - by Brendan Vogt

  I am using Entity Framework 5 code first and ASP.NET MVC 3. I am struggling to get a child object's child object to populate. Below are my classes.. Application class; public class Application { // Partial list of properties public virtual ICollection<Child> Children { get; set; } } Child class: public class Child { // Partial list of properties public int ChildRelationshipTypeId { get; set; } public virtual ChildRelationshipType ChildRelationshipType { get; set; } } ChildRelationshipType class: public class ChildRelationshipType { public int Id { get; set; } public string Name { get; set; } } Part of GetAll method in the repository to return all the applications: return DatabaseContext.Applications .Include("Children"); The Child class contains a reference to the ChildRelationshipType class. To work with an application's children I would have something like this: foreach (Child child in application.Children) { string childName = child.ChildRelationshipType.Name; } I get an error here that the object context is already closed. How do I specify that each child object must include the ChildRelationshipType object like what I did above?

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• Object reference error even when object is not null

  - by Shrewd Demon

  hi, i have an application wherein i have incorporate a "Remember Me" feature for the login screen. I do this by creating a cookie when the user logs in for the first time, so next time when the user visits the site i get the cookie and load the user information. i have written the code for loading user information in a common class in the App_Code folder...and all my pages inherit from this class. code for loading the user info is as follows: public static void LoadUserDetails(string emailId) { UsersEnt currentUser = UsersBL.LoadUserInfo(emailId); if (currentUser != null) HttpContext.Current.Session["CurrentUser"] = currentUser; } Now the problem is i get an "Object reference" error when i try to store the currentUser object in the session variable (even though the currentUser object is not null). However the password property in the currentUser object is null. Am i getting the error because of this...or is there some other reason?? thank you

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