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• computed column with aggregate function

  - by Kindson

  I have seven columns in my table: hours, weight, status, total_hours, total_weight and percentage total_weight = weight where status = 'X' total_hours = hours where status = 'X' percentage = total_hours/sum(weight) sum(weight) is an aggregate function I would like to specify formula to generate the three computed columns. What do i do?

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• Object Events, how do are they implemented

  - by Malfist

  Events are really awesome, and I wouldn't know what I would do without them, but they're a mystery to me. I'm talking about events in a sense, a function(s) is called if a property, or value, a special event happens. I have only the vaguest idea how these actually work. I know it's an observer pattern, but I don't truly know how it works and/or how to implement it. Can someone explain that to me?

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• How to execute Javascript function in C++

  - by owais masood

  Please tell me, how to include a javascript header file or javascript function in C++ code. The C++ code is written in Linux(UBUNTU)? Although i need to perform the above action only, but let me tell u my purpose of doing it, as i am intending to implement CTI (Computer Telephony Integration) operation. (Help will be appreciated) Thanks a lot in advance

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• Malloc function in C++

  - by Mohit Deshpande

  I am transitioning to C++ from C. In C++, is there any use for the malloc function? Or can I just declare it with the "new" keyword. For example: class Node { ... } ... Node *node1 = malloc(sizeof(Node)); //malloc Node *node2 = new Node; //new Which one should I use?

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• Visual Studio 2010 'Assign to local variable' function?

  - by Frank Meulenaar

  I'm in love with the function in Eclipse "assign to field". Basically, when I have getString(); and I type ctrl-2, Eclipse converts this into String getString = getString(); Is this possible in VS 2010?

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• why don't string object refs behave like other object refs?

  - by DayOne

  string a = "a"; string b = a; string a = "c" Why does string b still have the value "a" and not "c"? As string is an object and not a stack value type, what's with this behaviour? Thanks

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• how to build a string of id's from a json object

  - by Blankman

  My json object looks like: User { ID: 234, name: 'john', ..); I want to build a string of all the ID's. How can I do this? is there a more elegant way than below? var ids = ''; for(int x = 0; x < json.length; x++) { ids += json[x].Id + ","; } // strip trailing id

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• What's the usage if I provide an implementation for a pure virtual function in C++

  - by skydoor

  I know that it's OK for a pure virtual function to have an implementation. However, why it is like this? Is there conflict for the two concepts? What's the usage? Can any one offer any example?

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• creating proxy object in groovy

  - by IttayD

  Hi, I am looking for how to write a method that accepts some value and returns a proxy to that value where the underlying value can be retrieved with an accessor: def p = toProxy(1) assert p == 1 assert p * 2 == 2 assert p.underlying == 1 def p2 = toProxy(objWithMethodFoo) p2.foo() p2.underlying.foo() I want to do this per object instance (not for all objects of some class) and without the need to use special 'use' constructs.

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• Disable automatic index on related object id from yml

  - by BugBusterX

  Doctrine Automatically creates indexes on columns that are used to define object relations, For example user: id, name message: id, sender_id, receiver_id, message if I define relationship between message and user in a way that message has one Sender and has one Receiver, doctrine will automatically index sender_id and receiver_id fields when I generate sql from model. I would like to disable index on sender, because I manually create index with sender_id and receiver id together. How can I disable auto generated index?

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• C++: how to declare template array as function parameter

  - by ~buratinas

  Very similar to this post How can I declare template array as a parameter in templated function? Something like this code: template <unsigned i> void my_func (char (&a)[i]); //yes, I do need that reference

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• Facebook content locker function share

  - by Vicent D

  I made a facebook content locker(PHP + HTML + JAVA) for my website, so to access the site user must press the 'facebook share "in the middle of the screen.After pressing this button, it opens facebook pop-up and user can share or NOT my link because locker disappear in 30 seconds since clicked on this button(so I put it). Is there any possibility, any function that content locker disappear only after the user has actually given share in facebook pop-up window,I mean after my site address appears on facebook ? Thanks a lot

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• SlideUp Function on Jquery

  - by Silent

  i have a slide up function and a slide down on my script, everything works. The problem is that the DIVs are collapse and not hidden how would i be able to hide the divs on page start up. i tried to set the DIV to hidden but no luck with that.

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• Serialization of an object

  - by sandhya

  Hi I am Serialing an object using GetObjectData(SerializationInfo info, StreamingContext context) { info.AddValue("string1",subobject1); info.AddValue("string2",subobject2); } what will be stored in stream? do the strings also store?

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• Pass arguments to a delayed function with Haxe

  - by Johnny Oin

  Hi everyone, do you know if there is an easy way to pass some arguments to a function called via haxe.Timer.delay(func, delay); By "easy" I mean without creating any custom timer. Thanks.

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• PHP Array in MySQL IN() function?

  - by Trez

  Is it possible to assign php array in MySQL IN() function? for example, $numbers = array('8001254656','8886953265','88864357445','80021536245'); $sql = mysql_query("SELECT * FROM `number_table` WHERE `number` IN ($numbers)"); Any Ideas? Thanks,

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• If an Object has two has_many associations, how do I create a new Object?

  - by Angela

  I have an object (Contacts) which has two has_many relationships: Campaign and Company When I am in the Campaign view, I want to add a Contact. But without a Company_Id, Controller says cannot find company_id (which needs to be there if I add a Contact through the Company). What should I do?

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• Can I put a function inside a struct?

  - by drigoSkalWalker

  Maybe I use inline functions... There are any way to archieve it, without using function pointers? Thanks in advance.

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• Ajax function not called when included

  - by Sev

  I have an ajax function that is not run when the ajax script is included in my HTML page like so: <script type='text/javascript' src='ajax.js'></script> However, if I place the exact same script in the head portion of the HTML page, then it does run. Why does this occur, and how can I fix it?

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• what's wrong with this function?

  - by Joann

  function get_ibo_id() { if($registerquery = $this->conn->query("SELECT ibo_id FROM fasttrack WHERE count < 8 && flag = 1 ")){ $this->increase_count(); while ($row = $registerquery->fetch_assoc()) { return $row[ibo_id]; } } else return "No id"; } it always enters the if block even if the condition is not satisfied... going crazy

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• Clear Graphics Object to Black or other RGB

  - by Jimmy

  I am a rank beginner in C#. I am currently using this code: objGraphics.Clear(SystemColors.Control); What I want to do is Clear this object to black (or some other RGB color), and I'm stumped as to how to replace the SystemColors.Control with, preferably, an RGB color spec. I'd probably want to clear to black most of the time. Any help will be much appreciated!

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• [python] traversing an object tree

  - by jml

  Hi there, I'm trying to find information on different ways to traverse an object tree in python. I don't know much about the language in general yet, so any suggestions/techniques would be welcome. Thanks so much jml

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• Create a new instance in a static function of an abstract class

  - by arno

  abstract class db_table { static function get_all_rows() { ... while(...) { $rows[] = new self(); ... } return $rows; } } class user extends db_table { } $rows = user::get_all_rows(); I want to create instances of a class from a static method defined in the abstract parent class but PHP tells me "Fatal error: Cannot instantiate abstract class ..." How should I implement it correctly?

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• Object synchronization with GUI Controls in C#

  - by Heka

  Hi, Every time when I change some values in form controls, I need to set a property of an object or vice versa. Instead of writing some methods for each control, I want a general solution for GUI elements. I do not use WPF but only C# 3.0. Any suggestions? Thanks.

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• Python new-style classes and __subclasses__ function

  - by Fraser Graham

  Can somebody explain to me why this works (in Python 2.5) : class Foo(object): pass class Bar(Foo): pass print(Foo.__subclasses__()) but this doesn't : class Foo(): pass class Bar(Foo): pass print(Foo.__subclasses__()) The latter returns "AttributeError: class Foo has no attribute '__subclasses__'" but i'm not sure why. I know this is related to old-style vs. new-style classes but i'm not clear on why that would make this functionality unavailable.

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