I've been playing with C++ vectors.

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Socoder -> C/C++/C#/Other -> I've been playing with C++ vectors.
Mon, 25 Jul 2011, 19:27
steve_ancell	I've been having a little bit of fun with vectors. The remove function uses a reference, but could probably be replaced with a pointer. #include <iostream> #include <vector> using namespace std; class Foo { // private: int value; public: Foo(int v) { // value = v; } int getValue() { // return value; } }; void remove(vector<Foo> & v, int pos) { // v.erase(v.begin() + pos); } int main() { // vector<Foo> vectors; for (int i = 0; i < 10; i++) { vectors.push_back(Foo(i)); } remove(vectors, 4); for (int i = 0; i < vectors.size(); i++) { // cout << vectors[i].getValue() << " "; } cout << endl; cin.get(); return 0; } --v
Mon, 25 Jul 2011, 19:32
Cower	FYI, references are safer than pointers. If you can use a reference over a pointer, use a reference.
Mon, 25 Jul 2011, 19:37
steve_ancell	Thanx Noel, I will keep that in mind.
Tue, 26 Jul 2011, 14:26
Hotshot	references are safer than pointers. EH? I never seen References but do you have example code of it?
Tue, 26 Jul 2011, 16:36
steve_ancell	@Hotshot: This is what a reference is, in its simple form. You create a reference by putting an '&' symbol between the type of variable and its name. #include <iostream> using namespace std; int main() { // int myInt = 123; // Create a variable. cout << myInt << endl; // Print out myInt as it is now. int & myRef = myInt; // Create a reference of the variable. myRef = 456; /* Whatever you do to this reference will change whatever it is referneced to in this case myInt. a bit like a remote control for a variable/ cout << myInt <<endl; / Print out myInt again. Notice that its value has changed, even though I never changed it directly!.*/ cin.get(); return 0; } --v
Tue, 26 Jul 2011, 16:51
Hotshot	Interesting...Much cleaner than Pointer! What C++ IDE do you used? I used wxDev-C++
Tue, 26 Jul 2011, 16:55
steve_ancell	I've been using Visual C++ 2008, I would have used VC++ 2010, but it doesn't seem to go well with SFML.
Tue, 26 Jul 2011, 17:05
Hotshot	I see....it would cool if someone be able to do own graphics library but that would be tough task to do!
Tue, 26 Jul 2011, 17:39
shroom_monk	Steve, if you want something that goes well with SFML, I'd recommend Code::Blocks as an alternative. I've had generally good experiences with it, although the debugging tools aren't brilliant (I mean, you can get by with them, but they aren't too extensive). -=-=- A mushroom a day keeps the doctor away... Keep It Simple, Shroom!
Tue, 26 Jul 2011, 18:37
steve_ancell	I'll try it out at some point, thanx shroom.
Fri, 29 Jul 2011, 08:38
Afr0	FYI, references are safer than pointers. If you can use a reference over a pointer, use a reference. If you can, use smartpointers over both. -=-=- Afr0 Games Project Dollhouse on Github - Please fork!
Fri, 29 Jul 2011, 16:52
steve_ancell	I will have to study about those smart pointers, thanx Afr0.
Sat, 30 Jul 2011, 09:43
Hotshot	Smart Pointer look much better and more clearly
Sun, 31 Jul 2011, 04:55
Cower	If you can, use smartpointers over both. I think you have this backwards. If you can avoid using pointers, you do so, and you pass by-reference when you need to. If you absolutely need pointers (sometimes it's just necessary, i.e., in parent-child relationships), then you should consider using a smart pointer, but make sure you're using the right kind of smart pointer (auto_ptr is deprecated in C++0x, for example). They're not magic and do not solve every problem, so it's not always a good idea to use them.
Sun, 31 Jul 2011, 15:46
Afr0	(auto_ptr is deprecated in C++0x, for example). Do people actually use C++0x? As far as I can tell from Wikipedia, it hasn't been finalized as a standard yet. -=-=- Afr0 Games Project Dollhouse on Github - Please fork!
Sun, 31 Jul 2011, 16:37
Cower	One shouldn't use something that is soon to be deprecated. Whether C++0x is finished is irrelevant (though most compilers have already begun adding support for it), the point is more that knowing something is soon to be deprecated and still using it is a Bad Idea®.
Mon, 01 Aug 2011, 04:17
Afr0	So.... if you don't mind my asking, is anything going to replace it? Because usually there is something to replace deprecated things... Edit: Nevermind, this topic suggests using std::unique_ptr instead! -=-=- Afr0 Games Project Dollhouse on Github - Please fork!