W
wtnt
Hello,
I've been using the STL libraries for some time, but still don't know
the ins and outs of its implementation. Could this be because there's
more than 1 implementation?
Does anyone know of a good book out there or article that details how
one should handle memory usage when using the STL data structures,
like vector, map, etc.
Specifically, I mean things like when you put a key (char*) into a
map, does it copy this? Can I delete it right away? Can I only delete
it only after I've finished using my map? What about objects and not
just primitive types.
Same with vector, if I have a vector of myStruct. Do I need to go
through the vector and delete them or does the vector destructor do
that?
In general, I've been going with the rule of if they are pointers, I
am responsible, otherwise the vector class will handle it. But what
if I do:
vector<myObject> myVector;
myObject* obj = new myObject();
myVector.push_back(*obj);
Then what happens? Was this copied? Should I put delete obj here, or
at the end of the program, or never?
You see what I mean. A book that really explains the memory handling
would be very useful. thanks!
I've been using the STL libraries for some time, but still don't know
the ins and outs of its implementation. Could this be because there's
more than 1 implementation?
Does anyone know of a good book out there or article that details how
one should handle memory usage when using the STL data structures,
like vector, map, etc.
Specifically, I mean things like when you put a key (char*) into a
map, does it copy this? Can I delete it right away? Can I only delete
it only after I've finished using my map? What about objects and not
just primitive types.
Same with vector, if I have a vector of myStruct. Do I need to go
through the vector and delete them or does the vector destructor do
that?
In general, I've been going with the rule of if they are pointers, I
am responsible, otherwise the vector class will handle it. But what
if I do:
vector<myObject> myVector;
myObject* obj = new myObject();
myVector.push_back(*obj);
Then what happens? Was this copied? Should I put delete obj here, or
at the end of the program, or never?
You see what I mean. A book that really explains the memory handling
would be very useful. thanks!