|
[Sponsors] |
C question how to initialize a variable amount of objects |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
February 21, 2009, 06:58 |
Hello All,
Not an exact Foa
|
#1 |
Senior Member
Mark Couwenberg
Join Date: Mar 2009
Location: Netherlands
Posts: 130
Rep Power: 17 |
Hello All,
Not an exact Foam question. However, maybe someone can give some advice. I made a class which does various tasks on a certain patch in a mesh. It reads in data from a dictionary, calculate things etc etc. This works fine when needed on 1 patch in the mesh. However, now I want it to perform on more patches, e.g. 2 or 3, depending on what is given in the dictionary. I have to pass one variable (a pointer to the mesh) to each object. In C++ you can dynamically assign objects in an array using the keyword "new". However it seems not possible to also pass variables in that array. An example: Having a class called CRectangle, with the following assignement you create 2 objects of that class: >>> CRectangle * bobby = new CRectangle[2]; <<< But if you also want to pass arguments, like e.g.: >>> CRectangle * bobby = new CRectangle[2](2,3); <<< is not possible. You get the following error message: >>> error: ISO C++ forbids initialization in array new <<< This really seems strange to me. In my case I found some very ugly work around (hard coded initialisation of e.g. 10 objects (object1, object2, etc) and call their members only for the objects I really need. There must be a better way. Can someone show me the way? Thanks in advance, Mark |
|
February 21, 2009, 07:06 |
With this initialiser you will
|
#2 |
Senior Member
Hrvoje Jasak
Join Date: Mar 2009
Location: London, England
Posts: 1,907
Rep Power: 33 |
With this initialiser you will always call the null constructor for the CRectangle, which is not what you want. I would recommend you make a PtrList of CRectangle and then add them to the list one at a time, using whatever constructor you prefer.
Hrv
__________________
Hrvoje Jasak Providing commercial FOAM/OpenFOAM and CFD Consulting: http://wikki.co.uk |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
a question about initialize in fluent | zhaopu | FLUENT | 0 | December 29, 2008 06:52 |
Setting initial amount of ideal gas | David | FLUENT | 0 | November 2, 2007 09:35 |
Amount of Gas Suction | Im | FLUENT | 0 | January 20, 2005 22:29 |
Tecplot 10:Question about internal |LOOP| variable | Matt Morse | Tecplot | 1 | July 21, 2004 11:26 |
mesh nodes amount?? | newcfd | CFX | 2 | April 27, 2004 01:17 |