473,387 Members | 1,512 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,387 software developers and data experts.

class X containing an stl list<X> in MS Visual C++

I'm trying to create a class of nodes, where each node would contain a
list of other nodes. Ideally I would like it to work like this:

class node {
list<node> children;
};

However MS Development Environment 2002 V7.0 / MS .NET Framework V1.0
will not handle this class (g++ does). The following works but I must
explicitly dereference the pointers twice (and once implicity for the
reference???) in order to access anything with a list<node
*>::iterator.

class node {
list<node*> children;
};

Is there a simple way of getting this to work with less dereferences
to access a list item via an iterator and of course no copying of the
node class.

- JKL
Jul 22 '05 #1
1 1272
"Joseph Lanctot" <jk*******@yahoo.com> wrote in message
news:6b**************************@posting.google.c om
I'm trying to create a class of nodes, where each node would contain a
list of other nodes. Ideally I would like it to work like this:

class node {
list<node> children;
};

However MS Development Environment 2002 V7.0 / MS .NET Framework V1.0
will not handle this class (g++ does). The following works but I must
explicitly dereference the pointers twice (and once implicity for the
reference???) in order to access anything with a list<node
*>::iterator.

class node {
list<node*> children;
};

Is there a simple way of getting this to work with less dereferences
to access a list item via an iterator and of course no copying of the
node class.

- JKL

Simplest way is to upgrade to VC++ 7.1.

node is an incomplete type when list<node> children is declared. The
standard does not require that this compile, but recent versions of some
compilers will compile it. Apparently VC++7.0 won't.
--
John Carson
1. To reply to email address, remove donald
2. Don't reply to email address (post here instead)

Jul 22 '05 #2

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

14
by: Dave | last post by:
Hello all, After perusing the Standard, I believe it is true to say that once you insert an element into a std::list<>, its location in memory never changes. This makes a std::list<> ideal for...
4
by: matty.hall | last post by:
I have two classes: a base class (BaseClass) and a class deriving from it (DerivedClass). I have a List<DerivedClass> that for various reasons needs to be of that type, and not a List<BaseClass>....
2
by: Brian Pelton | last post by:
I am not sure how to fix this problem I've stumbled into... I have a list<> of an interface type. I need to pass that list to a method that adds more objects to the list. But, eventually, I...
0
by: Iron Moped | last post by:
I'm airing frustration here, but why does LinkedList<not support the same sort and search methods as List<>? I want a container that does not support random access, allows forward and reverse...
7
by: Andrew Robinson | last post by:
I have a method that needs to return either a Dictionary<k,vor a List<v> depending on input parameters and options to the method. 1. Is there any way to convert from a dictionary to a list...
56
by: Zytan | last post by:
Obviously you can't just use a simple for loop, since you may skip over elements. You could modify the loop counter each time an element is deleted. But, the loop ending condition must be...
45
by: Zytan | last post by:
This returns the following error: "Cannot modify the return value of 'System.Collections.Generic.List<MyStruct>.this' because it is not a variable" and I have no idea why! Do lists return copies...
0
by: SC | last post by:
How do I create at runtime a list of string (List<stringstrs = new List<string>(); fill it) and then bind it to a DataGridViewColumnBox? Setting the columns DataSource to the list doesn't...
35
by: Lee Crabtree | last post by:
This seems inconsistent and more than a little bizarre. Array.Clear sets all elements of the array to their default values (0, null, whatever), whereas List<>.Clear removes all items from the...
4
by: =?Utf-8?B?SkI=?= | last post by:
Hello List<Tis said to be more powerful than ArrayLists but if you have something like this: List<intmylst = new List<>; myList.Add("Joe"); myList.Add(25); the list doesn't seem to...
0
by: aa123db | last post by:
Variable and constants Use var or let for variables and const fror constants. Var foo ='bar'; Let foo ='bar';const baz ='bar'; Functions function $name$ ($parameters$) { } ...
0
by: ryjfgjl | last post by:
If we have dozens or hundreds of excel to import into the database, if we use the excel import function provided by database editors such as navicat, it will be extremely tedious and time-consuming...
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
0
BarryA
by: BarryA | last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
1
by: Sonnysonu | last post by:
This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
0
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
0
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...
0
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.