Re: [osg-users] STL vectors and function calls
*MyIterator->AnotherMethod(); should be " MyIterator->AnotherMethod(); "
On Dec 30, 2007 12:47 AM, Renan Mendes <[EMAIL PROTECTED]> wrote:
> Hi, everyone.
>
> I've got quick question on STL vectors.
>
> I've created a class (let's call it MyClass) with the method 'bool
> MyMethod(std::vector MyVector)' that calls another method 'void
> AnotherMethod()' that makes a simple check on a variable inherent to every
> instance of MyClass.
>
>
> How do I write that method? Or better put: how do I change the following
> code to make it right?
>
> bool MyClass::MyMethod(std::vector MyVector)
> {
> std::vector::iterator MyIterator;
>
> for(MyIterator = MyVector.begin(); MyIterator != MyVector.end();
> MyIterator++)
> {
> *MyIterator->AnotherMethod();
> }
> }
>
> I read that an iterator was a pointer to the content of the vector, why
> doesn't it work?
>
>
> Thanks,
>
>
> Renan M Z Mendes
>
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> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>
>
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Re: [osg-users] STL vectors and function calls
Thanks, Gordon. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] STL vectors and function calls
HI
Not really an OSG question this really belongs on a C++ user list,
Note the function declaration bool MyClass::MyMethod(std::vector
MyVector) here you should be passing in your vector as a reference or
pointer, you should ALWAYS pass any none POD variables as a references or
even the evil pointer ( we shall ignore constness at this point : ) ) you
are actually making a full copy of your vector and all it contents as shown
As defined you need something like ((MyClass&)(MyIterator)).AnotherMethod()
; note the DOT operator is used here not the -> operator. this is because
you vector as shown does not contain pointers
you might want to change your vectors declaration to use class pointers
rather class instances and pass by reference
If you were using pointers then you would be able to use the deference
operator
__
Gordon Tomlinson
Email : [EMAIL PROTECTED]
Website : www.vis-sim.com www.gordontomlinson.com
__
"Self defence is not a function of learning tricks
but is a function of how quickly and intensely one
can arouse one's instinct for survival"
-Master Tambo Tetsura
_
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Renan
Mendes
Sent: 29 December 2007 16:48
To: OSG Mailing List
Subject: [Norton AntiSpam] [osg-users] STL vectors and function calls
Hi, everyone.
I've got quick question on STL vectors.
I've created a class (let's call it MyClass) with the method 'bool
MyMethod(std::vector MyVector)' that calls another method 'void
AnotherMethod()' that makes a simple check on a variable inherent to every
instance of MyClass.
How do I write that method? Or better put: how do I change the following
code to make it right?
bool MyClass::MyMethod(std::vector MyVector)
{
std::vector::iterator MyIterator;
for(MyIterator = MyVector.begin(); MyIterator != MyVector.end();
MyIterator++)
{
*MyIterator->AnotherMethod();
}
}
I read that an iterator was a pointer to the content of the vector, why
doesn't it work?
Thanks,
Renan M Z Mendes
___
osg-users mailing list
osg-users@lists.openscenegraph.org
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[osg-users] STL vectors and function calls
Hi, everyone.
I've got quick question on STL vectors.
I've created a class (let's call it MyClass) with the method 'bool
MyMethod(std::vector MyVector)' that calls another method 'void
AnotherMethod()' that makes a simple check on a variable inherent to every
instance of MyClass.
How do I write that method? Or better put: how do I change the following
code to make it right?
bool MyClass::MyMethod(std::vector MyVector)
{
std::vector::iterator MyIterator;
for(MyIterator = MyVector.begin(); MyIterator != MyVector.end();
MyIterator++)
{
*MyIterator->AnotherMethod();
}
}
I read that an iterator was a pointer to the content of the vector, why
doesn't it work?
Thanks,
Renan M Z Mendes
___
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