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• .NET Runtime Object Browser.

  - by user290907

  Is there a framework which can be used in your application, to make it expose internal objects on some port for inspection. for.e.g. after i start my application in this case a GUI Application, and then say launch http://localhost:9100 then it should show me the statistics of the app. I played a bit with HttpListener accepting connections and then outputting raw HTML, it works fine for simple tasks, but there is too much worked involved if i have make a proper object browser. Thanks in Advance.

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• How to call object's method from constructor?

  - by Kirzilla

  Hello, var Dog = function(name) { this.name = name; this.sayName(); } Dog.prototype.sayName = function() { alert(this.name); } I'm creating new instance of Dog object, but method sayName() is undefined. Why? Or maybe I should do something like (but I can't see difference)... var Dog = function(name) { this.name = name; this.prototype.sayName = function() { alert(this.name); } } Thank you.

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• Exporting ActiveRecord objects into POROs

  - by Lucas d. Prim

  Hello, I'm developing a "script generator" to automatize some processes at work. It has a Rails application running on a server that stores all data needed to make the script and generates the script itself at the end of the process. The problem I am having is how to export the data from the ActiveRecord format to Plain Old Ruby Objects (POROs) so I can deal with them in my script with no database support and a pure-ruby implementation. I tought about YAML, CSV or something like this to export the data but it would be a painful process to update these structures if the process changes. Is there a simpler way? Ty!

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• C++11/14 and return( ... ) vs return

  - by user2485710

  In C++ you are allowed to write a return statement that looks like : return ( ... ); which is different from the more popular : return ... ; In particular the first version returns the address/reference of something that is local to the stack of the function which contains that return statement. Now why something would like to return a reference to something that, at that point, has no lifetime ? What are the use case for this idiom ? Considering the new buzzword and features from C++11 and C++14 there is a different usage for this ?

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• Automatically selecting and creating class objects

  - by Omin

  Lets say that we have a box class: class Box { private int width; private int height; //Box Constructor public Box( int height ) { this.height = height; width = 450; } } and a series of Box objects in our main: Box Box1 = new Box(147); Box Box2 = new Box(178); Box Box3 = new Box(784); Is there a way to use a "for" loop to go through these objects? Also, how would you make the computer create class objects for us? eg. create 10 objects using: for( int i=0; i>10; i++) { //method }

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• Shallow copy versus Deep Copy of user defined types.

  - by Codenotguru

  what is the difference between a shallow copy and deep copy with respect to user defined types and why do we need to perform a deep copy during copy construction for user defined types??

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• benefit os having a factory for object creation?

  - by ajsie

  im trying to understand the factory design pattern. i dont understand why it's good to have a middleman between the client and the product (object that the client wants). example with no factory: $mac = new Mac(); example with a factory: $appleStore = new AppleStore(); $mac = $appleStore->getProduct('mac'); how does the factory pattern decouple the client from the product? could someone give an example of a future code change that will impact on example 1 negative, but positive in example 2 so i understand the importance of decoupling? thanks

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• Need help in typecasting string in to int

  - by vaibhav

  I am using Convert.ToInt32(ddlBuyer1Country.SelectedValue); to typecast a string returned by selectedvalue. But this is giving me 0 instead of 3. I have selected value as 3 in this case.

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• problme with javascript map/object

  - by akshay

  I am using javascript map to store keys and values.Later on I check if specified key is present in map or not, but it sometimes gives correct result but sometimes it dont.I tried to print the map using console.log(mapname), it shows all keys, but i i try to check if some specified key is presnt sometimes it gives wrong answer. Am using following code: //following code is called n times in loop with different/same vales of x myMap : new Object(); var key = x ; //populated dynamically actually myMap[key] ="dummyval"; if(myIdMap[document.getElementById("abc").value.trim()]!=null) alert('present' ); else alert('not present'); What can be the possible problem?

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• Simple OOP-related question.

  - by M4design

  This question came to my mind quite a few times. Let my explain my question through an example. Say I've got two classes: 1- Grid. 2- Cell. Now the location of the cell 'should' be stored in the grid class, not in the cell class itself. Say that the cell wanted to get its location through a method in the grid. How can it do that? Keep in mind that the cell was created/initialised by the Grid class. What good OO approach to solve this problem? Thank you

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• how does an object knows about its parent in javascript

  - by alter

  Lets suppose I made a class called Person. var Person = function(fname){this.fname = fname;}; pObj is the object I made from this class. var pObj = new Person('top'); now I add one property to Person class, say lname. Person.prototype.lname = "Thomsom"; now pObj.lname gets me "Thomson". My question is that, when pObj didn't find the property lname in it, how does it know where to look for.

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• deleting dynamically allocated object that contains vector in C++ STL

  - by kobac

  I have a class class ChartLine{ protected: vector<Point> line; // points connecting the line CString name; //line name for legend CPen pen; //color, size and style properties of the line }; where Point is a structure struct Point{ CString x; double y; }; In main() I dynamically allocate objects of type ChartLine with new operator. If I use delete afterwards, will default destructor ~ChartLine() properly dealocate (or clear) member ChartLine::line(which is vector btw) or I would have to clear that vector in ~ChartLine() manually? Thanks in advance. Cheers.

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• OpenType Font Parsing for Pleasure and Profit (anyone understand these damn tables?)

  - by mustISignUp

  So, this is mainly for fun, I'm poking around and trying to find my way inside a few fonts and i have a few questions i'd reeally appreciate some help on if anyone has done this kind of stuff. cmap table The fonts i am testing with contain several cmap subtables of different formats. I can read them, but i don't understand which i should be using. ie. what is the strategy for choosing the most appropriate subtable? Does this even make sense? glyf table This is really making my head hurt. I'm going by what is on here. Looking at the second table on that page.. I've got 'n' endPtsOfContours, 'n' instructions and 'n' flags but it is not clear to me if i have the same number of flags as contours (i know how many contours i have). Then, to make matters worse..(fun!) i have an array of xCoords and an array of yCoords. These arrays seem to be of indeterminate length and may contain data of either BYTE or SHORT but we are not going to tell you which.. Thanks to anyone willing to shed some light.

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• What are the differences between struct and class in C++

  - by palm3D

  This question was already asked in the context of C#/.Net. Now I'd like to learn the differences between a struct and a class in (unmanaged) C++. Please discuss the technical differences as well as reasons for choosing one or the other in OO design. I'll start with an obvious difference: If you don't specify public: or private:, members of a struct are public by default; members of a class are private by default. I'm sure there are other differences to be found in the obscure corners of the C++ specification.

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• Store date object in sqlite database

  - by bnabilos

  Hello, I'm using a database in my Java project and I want to store date in it, the 5th and the 6th parameter are Date Object. I used the solution below but I have errors in these 2 lines : creerFilm.setDate(5, new Date (getDateDebut().getDate())); creerFilm.setDate(6, new Date (getDateFin().getDate())); PreparedStatement creerFilm = connecteur.getConnexion().prepareStatement("INSERT INTO FILM (ID, REF, NOM, DISTRIBUTEUR, DATEDEBUT, DATEFIN) VALUES (?, ?, ?, ?, ?, ?)"); creerFilm.setInt(1, getId()); creerFilm.setString(2, getReference()); creerFilm.setString(3, getNomFilm()); creerFilm.setString(4, getDistributeur()); creerFilm.setDate(5, new Date (getDateDebut().getDate())); creerFilm.setDate(6, new Date (getDateFin().getDate())); creerFilm.executeUpdate(); creerFilm.close(); Can you help me to fix that please ? Thank you

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• Making a many-to-many relationship using DataRelations object

  - by dotnetdev

  Hi, I have about 200 tables which need to relate to another table in a many-to-many fashion. I have the tables (including the intersection table) ready IN SQL Server. How can I write code using the data relation object to make the relationship? The tables are: PartStatPartName PartsMaterialsIntersection << Materials The materials table needs to have a foreign key from the PartStatPartName table. I tried various approaches using the DataRelation class but the change did not sync to SQL Server, despite being connected and adding the relation, and then calling AcceptChanges() on the dataset. Any guidance much appreciated. I have seen some threads covering the same problem but need an example in code so I can follow the right method. Thanks

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• Creating objects and referencing before saving object to db

  - by Flexo

  Sorry about the vague title, but i didnt know how to ask the question in one line :) I have an order with nested itemgroups that again have nested items. the user specify the amount of item that he would like to have in each itemgroup. I would like to create these items in the create method of the orders controller when the order itself is being created. I kinda have 2 problems here. First, how do i set the reference of the items, or better yet, put the items into the @order object so they are saved when the @order is saved? the items are being stored in the db as the code is now, but the reference is not set because the order is not stored in the db yet so it doesnt have an id yet. Second, im not sure im using the correct way to get the id from my itemgroup. @order = Order.new(params[:order]) @order.itemgroups.each do |f| f.amount.times do @item = Item.new() @item.itemgroup_id = f.id @item.save end end

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• When does .NET's ListControl update its text from ToString() of its members?

  - by Dmi

  I have a class which can change the value it returns in ToString(), but the ListBox which contains instances of this class in Items. The ListBox doesn't show this change unless I add or remove some item to the ListBox which is when refreshes the list, how can I make it refresh the list myself?

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• Is is possible to stringstream this way? to convert from string to int?

  - by John

  Is it possible to stringstream like this? I am trying to read with ifstream and convert it. string things = "10 11 12 -10"; int i1; int i2; int i3; int i4; stringstream into; into << things; into >> i1; into >> i2; into >> i3; into >> i4; I expect it to be : i1 = 10 i2 = 11 i3 = 12 i4 = -10 is that correct? Can the same stringstream variable be used multiple times? When I tried, the first time was ok but everything else later on is just 0.

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• Sending a Java object from my Android phone to my Computer

  - by TehGoose

  Hi, I was wondering what the simplest program for sending an object from my Andriod phone to my computer wirelessly (via LAN) would be. I have created Java RMI programs with a server and multiple clients, so I have a grasp of the concept. However with android I'm just not sure where to start. What I am aiming to do is send some sort of information (could simply be text) to my computer and my computer will do an action. I have the GUI interface's and the actions to be carried out all worked out, just the sending of some sort of information is getting me. Could anyone help me out?

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• Create an object with javascript reflection?

  - by acidzombie24

  I am doing something wrong. At the end of this o is empty. I want to pass in a string such as a=3&zz=5 and do o.a and o.zz to retrieve 3 and 5. How do i generate this object? function MakeIntoFields_sz(sz) { var kvLs = sz.split('&'); var o = new Array(); for (var kv in kvLs) { var kvA = kvLs[kv].split('='); var k = ''; var v = ''; if (kvA.length > 0) { k = kvA[0]; if (kvA.length > 1) v = kvA[1]; o[k] = v; } } return o; };

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• algorithms that destruct and copy_construct

  - by FredOverflow

  I am currently building my own toy vector for fun, and I was wondering if there is something like the following in the current or next standard or in Boost? template<class T> void destruct(T* begin, T* end) { while (begin != end) { begin -> ~T(); ++begin; } } template<class T> T* copy_construct(T* begin, T* end, T* dst) { while (begin != end) { new(dst) T(*begin); ++begin; ++dst; } return dst; }

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• Guidelines for solution source code organisation(OO/DDD)

  - by fearofawhackplanet

  I'm starting on my first business project (.NET) and am trying to follow DDD principles. Are there any guidelines or common patterns for orgaining source code and namespaces? For example, do your domain objects go in a namespace MyProject.Domain or whatever? Would you separate the concrete implementations and the interfaces? In different namespaces? Different folders? Different solutions? I know a lot of this is subjective and dependent on project size, but a few pointers or suggestions to get started on a relatively small but extensible n-tier project would be useful.

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• Can't declare an abstract method private....

  - by Zombies

  I want to do this, yet I can't. Here is my scenario and rational. I have an abstract class for test cases that has an abstract method called test(). The test() method is to be defined by the subclass; it is to be implemented with logic for a certain application, such as CRMAppTestCase extends CompanyTestCase. I don't want the test() method to be invoked directly, I want the super class to call the test() method while the sub class can call a method which calls this (and does other work too, such as setting a current date-time right before the test is executed for example). Example code: public abstract class CompanyTestCase { //I wish this would compile, but it cannot be declared private private abstract void test(); public TestCaseResult performTest() { //do some work which must be done and should be invoked whenever //this method is called (it would be improper to expect the caller // to perform initialization) TestCaseResult result = new TestCaseResult(); result.setBeginTime(new Date()); long time = System.currentTimeMillis(); test(); //invoke test logic result.setDuration(System.currentTimeMillis() - time); return result; } } Then to extend this.... public class CRMAppTestCase extends CompanyTestCase { public void test() { //test logic here } } Then to call it.... TestCaseResult result = new CRMAppTestCase().performTest();

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• How to simplify the code?

  - by Tattat

  I have objectA, and objectB.... also I have objectAs, and objectBs. the objectA is only have the init method, and ObjectAs have somethings like this: #import "ObjectAs.h" @implementation ObjectAs @synthesize objectAs; -(id) init{ if( (self=[super init])) { self.objectAs = [[NSMutableArray alloc] init]; } return self; } -(int)getObjectAsNumber{ return [self.objectAs count]; } -(void)addObjectA:(ObjectA *)newObjectA{ [self.objectAs addObject:newObjectA]; } -(id)getObjectAByIdx:(int)objectAIdx{ return [self.objectAs objectAtIndex:objectAIdx]; } -(void)dealloc{ [super dealloc]; [objectAs release]; } @end The objectBs have similar have, I know that I can copy and paste, and replace it. Is there any way to simplify the objectBs, and objectAs? thz a lot.

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