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• RoR - Associations into practise - forms (View)

  - by NicoJuicy

  I'm learning Ruby on Rails. I'm using some associations (has_many :through, ...) But i'm having some problems with it when i'm combining my views. How exactly do i combine these nested forms? Can i do this with partial forms and where do i have to write extra code for this? I have seen examples only use the "view" and others also edit the controller.... An example would be very nice :-)

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• What software should i use to work with Ruby?

  - by paranoid_pedlar

  I've only ever learned to "program" with notepad when I was learning to create batch files in Windows. I would appreciate if you can explain to me the benefits of working with an IDE over a text editor or vice versa. Please don't give emotional responses or argue someone else's suggestion/advice. I use Linux primarily. Also, I would like to be able to make programs that can be used in Windows, but programmed in Linux. Thanks.

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• What is roster in XMPP?

  - by Devyn

  I'm learning XMPP now but I repeatedly seeing that word roster but I have no idea. Hope someone can lighten me up!

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• ms-access: difference between control source and row source

  - by every_answer_gets_a_point

  i have learning reports in access and i don't understand the difference between these two concepts. i understand that the control source is the column? but then what is the row source?

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• How difficult is it to learn F# for experienced C# 3.0 developers?

  - by Marcel Lamothe

  How difficult is it to learn F# for experienced C# 3.0 developers, and/or what would you say is the most difficult part of learning F#?

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• How to link a UIViewController to a NIB file?

  - by jcdmb

  Hi everyone, I'm reading O'reilly's Learning iPhone Programming and on page 79 it says I have to create a new file (UIViewController subclass) and thick the checkbox to ask Xcode to generate an associated NIB file. The problem is: I do not have this option in my XCode 3.1 (this options is from XCode 3.2). So, I have to do it manually, and I don't know how. Could someone please help me? Thanks in advance!

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• How to create temporary files in memory visible for other process, using python

  - by LazyMiha

  Hello! I`m trying to write simple batch file generator in python. Batch file consist of about 30-50 lines of text and is passed to other applications. During the execution of script there a lot of calls to external applications. I want to create file in memory (like named pipes in win32). Is there any platform independ way? p.s. sorry for possible mistakes in text, I'm still learning English

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• funny looking comments - c++

  - by Dr Deo

  when i read through source files of opensource projects i often come across some weird phrases in the comments /* @brief ...... @usage..... @remarks.... @par.... */ questions 1.What are they?(were not mentioned when i was learning c++) 2.Do they have any documentation(where)

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• Recursive insert-method for a linked list

  - by user3726477

  I'm learning C# and I've made a recursive insert-method for a linked list: public static int recursiveInsert(ref int value, ref MyLinkedList list) { if (list == null) return new MyLinkedList(value, null); else { list.next = recursiveInsert(ref int value, ref list.next); return list; } } How would you modify this method to make the recursive call look like this: recursiveInsert(value, ref list.next) instead of: list.next = recursiveInsert(ref int value, ref list.next);

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• Why does this anonymous function starting with println result in a NullPointerException?

  - by noahz

  I am learning about pmap and wrote the following function: (pmap #((println "hello from " (-> (Thread/currentThread) .getName)) (+ %1 %2)) [1 1 1] [-1 -1 -1]) When run, the result is a NullPointerException (hello from clojure-agent-send-off-pool-4 hello from clojure-agent-send-off-pool-3 hello from clojure-agent-send-off-pool-5 NullPointerException user/eval55/fn--56 (NO_SOURCE_FILE:11) Why is this happening? I have understood and observed the body of a fn to be an implicit do.

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• C# ASP.Net WebForm Membership Extra User Details (Profile)

  - by user1638362

  I'm learning how to use the ASP.net membership, when a user registers they just create a username and password, however i want to create a page on my website called "profile" where they can fill in extra details such as firstname, lastname, date of birth ect. However i don't see where i can place this in the asp.net membership database. Theres an asp.net_profile table however i'm not sure how this works. Could someone please explain how i can do this?

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• Determining the word width in C

  - by das_weezul

  Hi! I'm learning C right now and so I'm fiddling about with pointers. Is there a way to determine the word width of the CPU in C because I'm writing a small program which prints it's own stack (Because I'm curious how it is structured), so that information would come in handy. Right now I'm using an int pointer, as an integer is 4 Bytes wide and I'm using a 32-bit Intel Atom CPU. Thanks in advance, C gurus ;o)

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• How to write php+html in one file more beautiful?

  - by Donator

  <? if($id == 2) { ?>        html goes here <? } else { ?>        if id is not 2 then something goes here <? } ?> How can I write php+html in one file more beautiful without learning smarty?

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• C++ Newbie Question

  - by JavaMan

  I am from a Java background and is learning C++. I encountered the following C++ code: String source = String::New("'Hello' + ', World'"); As what I understand so far, this should be a call to static member function 'New' of class 'String'. But, I've searched through the whole header file defining 'String', there is not any static member named 'New' in the String class or its super classes. Is there any special meaning attached to String class or the New member function in C++?

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• What does a forward slash before a pipe in cmd do to remove the line ending of an echo?

  - by user66001

  This code: @echo off echo/|set /p ="Executing backup...." echo/|set /p =" backup procedure" ... came from Echoing in the same line and produces the below output in a cmd window: Executing backup....backup procedure However, I cant seem to find an explanation through google on what the forward slash does to the ¿pipe? to cause set's output to be echoed to the console / stdout If anyone could also suggest a good website for learning more about cmd / cmd programs' features like this, it would be appreciated.

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• Differences between Zend Framework 1.8 and 1.10

  - by Pat

  I want to start learning Zend Framework. My only concern is that the most recent ZF book on Amazon with good reviews teaches version 1.8 of the framework, which is now about a year old. Do you think it would be a good idea to still pick up that book or is it too old now?

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• Python basics: One "empty" line in Python (print ''). What does it do?

  - by brilliant

  I know this question may well be the silliest question you've herd today, but to me it is a big question at this stage of my programming learning. Why is the second empty line needed in this Python code? What does that line do? print 'Content-Type: text/plain' print '' print 'Hello, world!'

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• difference between -> and . for member selection operator.

  - by TimothyTech

  in this book i have I'm learning pointers, and i just got done with the chapter about OOP (spits on ground) anyways its telling me i can use a member selection operator like this ( - ). it sayd that is is like the "." except points to objects rather than member objects. whats the difference, it looks like it is used the same way...

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• Developing Bots__Where can I start?

  - by user947659

  i have a pet programming goal: to develop a bot for a game. Now, this won't be anything malicious, and I just want to do this to further my knowledge in programming. Can anyone help me out by pointing to where i can start learning how to develop a bot? the type of bots i want to make are video game bots (online multiplayer, first person shooters, and offline games(like solitaire and such)). Thanks!

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• MVC alternatives: examples of MVA & AVC?

  - by Phillip Oldham

  I'm interested in learning about the alternative patterns to Model-View-Controller, specifically the Model-View-Adapter and Application-View-Controller patterns. Google results tend to be either a high-level overview or Java-based. Can anyone either provide, or point me to, an example of these patterns in either PHP, Python or JavaScript?

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• Silverlight or HTML 5 - what looks better on the resume?

  - by ved

  To a developer who is about to delve into learning how to use Silverlight would you recommend its worth the effort OR would you say its better to focus on HTML5? I am asking from a purely from a marketability perspective

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• How is $sys_root bieng assigned a value?

  - by Babiker

  I have been learning php for sometime now. Besides reading books and doing tutorials i also like to sometimes read other programmers code. I have came across this: <?php // authentication. include_once($sys_root."/inc/authenticate_check.php"); I understand the use for $sys_root, but what i dont understand is, how is $sys_root bieng assigned a value. I have checked and made sure that $sys_root is not a special var of PHP's.

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• C Language Standard Collections Where Are They?

  - by flaxeater

  I have committed to learning C now, I'm good with Python/PHP/Bash but I've decided I'm limited by not being fluent in C. However I cannot imagine working in a language without lists and hashes, maybe I'm just jumping a gun, but surely there are 'standard' collection libraries. I do not see any in the GNU standard lib though, any suggestions?

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• What to Learn after C++?

  - by Stephen Whitmore

  I have been learning C++ for a while now, I find it very powerful. But, the problem is the the level of abstraction is not much and I have to do memory management myself. What are the languages that I can use which uses a higher level of abstraction.

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• Looking for example projects and "how to create" VB6 Active X EXE's

  - by Clay Nichols

  I'm learning how to create an VB6 Active X EXE. (I need to add the ability for a number of VB6 apps to "phone home" to a server and I'd like centralize this but don't want to do it with a DLL because I'd like to only need Firewall permission for one program (the "phone home ActiveX EXE). I've found a few tutorials but I'm looking for a downloadable project to "play around with".

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