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• Data structure in C# (3.0) that represents a CUBE

  - by Thinking

  Can you please give me some idea about how to design a data structure in C# (3.0) which will give a representation of 3D data structure. I mean to say something similar to cube. Like stock data to be viewed based on time , location . Kindly give a simple working example or even a link will do. It's urgent. Any example will be appreciated. Thanks in advance

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• Why are interfaces unusable in PHP?

  - by streetparade

  I mean an interface definition without defining the return type makes it unusable? This makes more Clear Interface run { public function getInteger(); } class MyString implements run { public function myNumber() { } public function getInteger() { return "Not a number"; } } In Java every Interface has a return type like Integer,String,Void I know that PHP is unfortunately a loosly typed Language but isnt there a Solution for that Problem? Is it Possible to defining a Interface with a Return type like Integer?

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• Increment and Decrement operators

  - by viswanathan

  How are the below valid and invalid as shown and what do they mean. When would such a situation arise to write this piece of code. ++x = 5; // legal --x = 5; // legal x++ = 5; // illegal x-- = 5; // illegal

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• Controlling form elements from a different thread in Windows Mobile

  - by d1k_is

  Trying to get a thread to change form controls in Windows Mobile. Throws an unsupported exception. Does this mean it cant be done at all? If not, how do I go about this? Forms are created in the Parent/Main thread then a thread is created to do some work in the background but I want to make it so the Background thread can update the form to show its completed...

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• safely reading directory contents

  - by Jack

  Is it safe to read directory entries via readdir() or scandir() while files are being created/deleted in this directory? Should I prefer one over the other? When I say "safe" I mean entries returned by these functions are valid and can be operated without crushing the program. Thanks.

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• Check mysql_query results if DELETE query worked?

  - by Camran

  I have a DELETE query which deletes a record from a mysql db. is there any way to make sure if the delete was performed or not? I mean, for a query to FIND stuff you do $res=mysql_query($var); $nr=mysql_num_rows($res); and you get nr of rows returned. Is there any similiar method for deletion of records? Thanks

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• PHP: array('function' => 'theme_select_as_checkboxes')

  - by Patrick

  hi, what does this construct mean in PHP ? It is storing a variable called "function" with his String value in an array ? array('function' => 'theme_select_as_checkboxes') thanks

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• Rails: it's a good ideia to store the view in a global var?

  - by Totty

  Im thinking of storing the view, what i mean by view is like this: app/views/profiles/index.html.haml into this i would do $view = self then in other parts of my app i would use and edit the $view var. it might get troubles?

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• what exactly is delegate in C#

  - by Learning.net

  Hi All, can somebody explain the use of delegate..I know that it is used to invoke methods at run time...but exactly what does it mean..can somebody explain it with some simple example, which will help a newcomer to understand delegate better

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• Dependency Properties

  - by developer

  Hi All, Can anybody explain me what a dependency property is in WPF and what is its use. I know there are a lot of tutorials on google for it, but they teach how to create a dependency property. I am confused as to where I would use it. I mean will I use it in XAML? If anybody could explain me in simple terms, that would be great.

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• Google webfonts

  - by Mark

  Google webfonts look horrible on windows. What is going on? Is this a temporary problem that will be fixed, or is this just a windows problem that will forever persist? If the latter, doesn't that mean the entire project is sort of useless? Thanks in advance.

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• Validate links with php

  - by mike

  Can anyone tell me if its possible to validate a link with php? By validate, I mean check if the link is active and works not just the actual format of the link.

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• this parameter modifier in C#?

  - by Ivan

  I'm curious about this code snippet: public static class XNAExtensions { /// <summary> /// Write a Point /// </summary> public static void Write(this NetOutgoingMessage message, Point value) { message.Write(value.X); message.Write(value.Y); } // ... }; What does the this keyword mean next to the parameter type? I can't seem to find any information about it anywhere, even in the C# specification.

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• Two quick Mathematica questions

  - by sciguy

  How do I remove the numbers on the x-axis only not the y-axis? Is it possible to shift the y-axis without shifting the functions? What I mean is, instead of having the y-axis at x = 0, could I have it at x = -5?

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• What kind of data type is this?

  - by mystify

  In an class header I have seen something like this: enum { kAudioSessionProperty_PreferredHardwareSampleRate = 'hwsr', // Float64 kAudioSessionProperty_PreferredHardwareIOBufferDuration = 'iobd' // Float32 }; Now I wonder what data type such an kAudioSessionProperty_PreferredHardwareSampleRate actually is? I mean this looks like plain old C, but in Objective-C I would write @"hwsr" if I wanted to make it a string. I want to pass such an "constant" or "enum thing" as argument to an method.

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• purpose of enumeration?

  - by I__

  can someone please give me some examples where enumeration is used? i dont understand the concept. i mean both IEnumerable and enum?

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• Oracle/SQL table attribute question

  - by UnceRawr

  I have been given a context schema for a database i need to make for my coursework but some of the attributes (column names) contain letters in brackets at the end of them such as: *x_Number (Adm) *x_Number (A) *x_Number (P) The problem is i have no idea what these letters mean! Can anyone help?

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• What is 'type' in systypes?

  - by cruzy

  In sys.systypes ... what exactly is 'type'? What exactly does .... bigint int varchar ... order mean when I execute select * from sys.systypes order by type desc

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• problem in DataTextFied

  - by ZiGi

  i know that the syntax for usin DataTextField is : VA.DataTextField = "nameofcolum" but if my request is not simple that mean my request return the result in a colum wich not exist in this case what i should to affect to DataTextField

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• What happens if we load already loaded class again?

  - by GK

  I mean we have a class which is already loaded in JVM. and in some other method we are unknowingly trying to load that same class, So in this situation what happens? ie will there be any error or exception saying its already loaded. If not, then is it possible that we can have modified class with some extra features and load it whenever it is required that is Hot Deployment.

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• from string to integer (scripts)

  - by lego69

  I have this snippet of the code: set calls = `cut -d" " -f2 ${2} | grep -c "$numbers"` set messages = `cut -d" " -f2 ${3} | grep -c "$numbers"` @ popularity = (calls * 3) + messages and error @ expression syntax what does it mean? grep -c returns number, am I wrong, thanks in advance in $numbers I have list of numbers, 2 and 3 parameters also contain numbers

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• how can a __global__ function RETURN a value or BREAK out like C/C++ does

  - by user1684726

  Recently i've been doing string comparing jobs on CUDA, and i wonder how can a global function return a value when it finds the exact string that i'm looking for. I mean, i need the global function which contains a great amout of threads to find a certain string among a big big string-pool simultaneously, and i hope that once the exact string is caught, the global funtion can stop all the threads and return back to the main funtion, and tells me "he did it"! B.T.W., I'm using CUDA C .How could i possibly achieve that, waiting for help.

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• A question about c/c++ syntax

  - by user198729

  I don't have the c++ environment yet right now. It seems to me that a function must be declared/defined first to be called in c. I mean, the declared/defined part should be ahead of the calling part. Is it the same in c++? Finally, it seems c++ is adding new features to itself, what about c, has it stopped being developed?

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• Meaning of int(0) in int *pi = new int(0); ?

  - by understack

  int *pi = new int(0); What's the significance of 0 here? Does it mean integer array of length 0?

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• Creating a good search solution

  - by Daniel

  I have an app where users have a role,a username,faculty and so on.When I'm looking for a list of users by their role or faculty or anything they have in common I can call (among others possible) @users = User.find_by_role(params[:role]) #or @users = User.find_by_shift(params[:shift]) So it keeps the system Class.find_by_property So the question is: What if at different points users lists should be generated based on different properties.I mean: I'm passing from different links params[:role] or params[:faculty] or params[:department] to my list action in my users controller.As I see it all has to be in that action,but which parameter should the search be made by?

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