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• How to verify object creation in Django ?

  - by Martin

  So.. this never crossed my head before but now I just can't figure out how to do that !! I want to verify that the object I created was really created, and return True or False according to that : obj = object(name='plop') try: obj.save() return True except ???: return False Any idea ? Cheers, -M

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• Which of the two exceptions was called?

  - by Rob

  If I have a routine that can throw an ArgumentException in two places, something like... if (Var1 == null) { throw new ArgumentException ("Var1 is null, this cannot be!"); } if (Val2 == null) { throw new ArgumentException ("Var2 is null, this cannot be either!"); } What’s the best way of determining in my calling procedure which of the two exceptions was thrown? Or Am I doing this in the wrong fashion?

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• Preventing alert to show two popups when button is clicked twice

  - by Nadeem

  Lets say we have a js function which shows a pop up on a button click. But if the button is clicked twice in a hurry it show two popups. Is there any way to prevent alert to show two pop ups when the button is clicked twice in a hurry?

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• Randomly selecting a limited number of records with two conditions in MySQL

  - by andyashton

  I have a MySQL table with a column called "priority". The column can have two values: high or low. I want to select 8 records from the table at random, but I want 6 of them to be high priority, and 2 of them to be low priority. If possibly, I would like to do it in one SQL statement. Is there any way to do two LIMITS in one query based on this kind of criteria?

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• Fast way to compute the minimal distance of two sets of k-dimensional vectors

  - by vrld

  I two sets of k-dimensional vectors, where k is around 500 and the number of vectors is usually smaller. I want to compute the (arbitrarily defined) minimal distance between the two sets. A naive approach would be this: (loop for a in set1 for b in set2 minimizing (distance a b)) However, this requires O(n² * distance) computations. Is there a faster way of doing this?

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• Javascript this points to Window object

  - by terrani

  Hi, I have the following code. I expected to see "archive" object on my firebug console, but I see Window object. Is it normal? var archive = function(){} archive.prototype.action = { test: function(callback){ callback(); }, test2: function(){ console.log(this); } } var oArchive = new archive(); oArchive.action.test(oArchive.action.test2);

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• What does "object affine" mean?

  - by mafutrct

  What does "object affine" mean? For instance, there are object affine thread pools. While I understand both thread pools and affine transformations in math, I can't think of an association between them.

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• Size of an object

  - by sandhya

  Hi I am trying to findout size of an object. Is there any way to know how much memory the object is using? is there anything like 'sizeof' ??

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• What Exactly happens when an object is serialized

  - by sandhya

  HI when an object (having sub objects) is serialized using a BinaryFormatter, what exactly happens? how the object data is stored? how the strings used to map the objects store? I want to know the serialized stream format. please help me ..

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• join two tables but want one matching columns instead of showing it separately sql server 2008

  - by amby

  Hi i want to display join result of two tables but don't want to show matching column separately. I want it one instead of two. so please tell me what query should i use for this. I m using sql server 2008 and my query is like: select * from Customer_Order, optRelation where Customer_Order.orderNumber = optRelation.orderNumber AND optRelation.orderNumber = 21. please reply soon

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• C: Run two functions at the same time?

  - by Daniel

  Hi, I have two functions in C: function1(){ // do something } function2(){ // do something while doing that } How would i run these two at the exact same time? If possible, please provide an example!

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• Define and send a JSON object array

  - by Eric

  I'm looking for a way to define and send a JSON object array. I've figured out how to define a single JSON object, turn it into a string and send it, but what about an array of this type? Probably something simple I'm overlooking... var myColumnSetting = { "ColumnName": name, "ColumnIndex": index } convert it to a string var myJSONText = JSON.stringify(myColumnSetting, false);

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• How to set a native object property

  - by theunilife

  ok so im creating a jquery plugin that will allow me to use the new html5 Audio interface and im trying to create an option that is an object that you will be able to set the various listeners but i dont seem to be able to set those options to the listener property of the Audio object.

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• Using recursion to sum two numbers (python)

  - by James

  I need to write a recursive function that can add two numbers (x, y), assuming y is not negative. I need to do it using two functions which return x-1 and x+1, and I can't use + or - anywhere in the code. I have no idea how to start, any hints?

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• In Objective C, is there a difference between if (object == nil) and if (nil == object)?

  - by Bill

  I would lean towards if (object == nil) but I've noticed in some tutorials the use of if (nil == object) Is this just a style thing, or is there some justified rationale for using either format?

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• Java thread, accessing object in main code

  - by Tim

  In Java, I want to download some data asynchronously in a Thread (or Runnable) object, and have the Thread put it's data into an Object I've declared within my main Thread. How could I do this please?

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• Do we inherit from Object?

  - by Knowing me knowing you

  Guys do we inherit from Object like from any other class (except of course that we don't have to explicitly state that) or there is some special privileges to Object class and it's not inherited as other classes?

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• Where/when does the object impedence mismatch occur?

  - by dotnetdev

  When people talk about object impedence mismatch, where does the mismatch happen? What can't a database interpret from an object model? Thanks

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• How to convert a String to a Range Object

  - by nimo

  Hi, Is there anyway to convert a string value to a Range object ? I'm having a function which takes a Range object as a argument and need to pass a single string parameter to it Thank You

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• Moving from php to rails (Procedural to object oriented programming)

  - by piemesons

  While moving from php to rails (Means procedural language to Object oriented language), what are the various things you should keep in mind. How to think in world of object oriented programming? What are thinks i should kept in mind before starting the things. Any tips?

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• Can I use file_get_content() to compare two files?

  - by xdazzyy

  I want to synchronize two directories. And I use file_get_content($source) === file_get_content($dest) to compare two files. Is there any problem to do this?

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• Redefine Object.defineProperty in Javascript

  - by kwicher

  I would like to learn if it is possible to redefine the "definePropery" function of the Object(.prototype) in a subclass(.prototype) so that the setter not only sets the value of the property but also eg executes an additional method. I have tried something like that: Myclass.prototype.defineProperty = function (obj, prop, meth) { Object.defineProperty.call(this, obj, prop, { get: function () { return obj[prop] }, set: function () { obj[prop] = n; alert("dev") } }) } But id does not work

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• How is Object[] cloneable

  - by java_geek

  Object[] o = new Object[]{}; System.out.println(o instanceof Cloneable); This gives true as o/p. I could not understand why?

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• regarding object recycling

  - by ajaycv

  I have a question. What is wrong with regards to the below code: ArrayList tempList2 = new ArrayList(); tempList2 = getXYZ(tempList1, tempList2); //method getXYZ getXYZ(ArrayList tempList1, ArrayList tempList2) { //does some logic and adds objects into tempList2 return tempList2; } The code will get executed but it seems by passing tempList2 to the getXYZ method argument, it is doing object recycling. My question is, Is recycling the tempList2 arraylist object correct?

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• Can I use file_get_contents() to compare two files?

  - by xdazzyy

  I want to synchronize two directories. And I use file_get_contents($source) === file_get_contents($dest) to compare two files. Is there any problem to do this?

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