Hello,
I have a vector of pointers to a class, like so:
vector<Node*> m_parents;
I'm having trouble creating an iterator to go through the elements in
this vector. Here is my syntax:
vector<Node*>:: iterator iter = m_parents.begin ();
And here is the error I'm getting:
/usr/include/gcc/darwin/4.0/c++/bits/stl_iterator.h: In constructor
`__gnu_cxx::__n ormal_iterator< _Iterator,
_Container>::__ normal_iterator (const
__gnu_cxx::__no rmal_iterator<_ Iter, _Container>&) [with _Iter =
sbn::Node* const*, _Iterator = sbn::Node**, _Container =
std::vector<sbn ::Node*, std::allocator< sbn::Node*> >]':
src/node.cpp:86: instantiated from here
/usr/include/gcc/darwin/4.0/c++/bits/stl_iterator.h: 609: error: invalid
conversion from 'sbn::Node* const* const' to 'sbn::Node**'
Any ideas?
Thanks for all the help you guys have been giving me.
Carl
5  2938 
cayblood wrote: Hello,
I have a vector of pointers to a class, like so:
vector<Node*> m_parents;
I'm having trouble creating an iterator to go through the elements in
this vector. Here is my syntax:
vector<Node*>:: iterator iter = m_parents.begin ();
And here is the error I'm getting:
/usr/include/gcc/darwin/4.0/c++/bits/stl_iterator.h: In constructor
`__gnu_cxx::__n ormal_iterator< _Iterator,
_Container>::__ normal_iterator (const
__gnu_cxx::__no rmal_iterator<_ Iter, _Container>&) [with _Iter =
sbn::Node* const*, _Iterator = sbn::Node**, _Container =
std::vector<sbn ::Node*, std::allocator< sbn::Node*> >]':
src/node.cpp:86: instantiated from here
/usr/include/gcc/darwin/4.0/c++/bits/stl_iterator.h: 609: error: invalid
conversion from 'sbn::Node* const* const' to 'sbn::Node**'
Any ideas?
Thanks for all the help you guys have been giving me.
Carl
I would guess that you are calling this from within a const method.
Therefore you must use a const_iterator.
vector<Node*>:: const_iterator iter = m_parents.begin ();
If that's not it then quote a bit more of the code. Preferably enough so
that someone reading your post can actually compile the code and
reproduce the error.
john
I figured it out. Don't know why, but the method I'm calling this in
is a const method. It doesn't like the call to m_parents.begin (). I
thought it wasn't changing anything in the vector state, but apparently
it is.
Thanks,
Carl
cayblood wrote: I figured it out. Don't know why, but the method I'm calling this in
is a const method. It doesn't like the call to m_parents.begin (). I
thought it wasn't changing anything in the vector state, but apparently
it is.
Thanks,
Carl
Because you are calling in a const method, the version of begin that you
are calling returns a const_iterator. It is not allowed to assign a
const_iterator to an iterator for obvious reasons.
john
I figured it out. Don't know why, but the method I'm calling this in
is a const method. It doesn't like the call to m_parents.begin (). I
thought it wasn't changing anything in the vector state, but apparently
it is.
Thanks,
Carl
I figured it out. Don't know why, but the method I'm calling this in
is a const method. It doesn't like the call to m_parents.begin (). I
thought it wasn't changing anything in the vector state, but apparently
it is.
Thanks,
Carl
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