Post your tips for making life easier in C and C++. I'll start:
Standard vector object initialization
The biggest problem with the standard vector class is that one can't use an array initializer. This forces us to do something like this:
#include <iostream>
#include <vector>
using namespace std;
int main()
{
vector<int> v;
v.push_back(1);
v.push_back(2);
v.push_back(3);
v.push_back(4);
v.push_back(5);
// Use the vector
}
Anyone who's had the rule of redundancy pounded into their head knows that the previous code could be wrapped in a loop:
#include <iostream>
#include <vector>
using namespace std;
int main()
{
vector<int> v;
for (int i = 1; i < 6; i++)
v.push_back(i);
// Use the vector
}
However, it's not terribly elegant, especially for a vector of complex types. So, Narue's first timesaving tip for C++ is to use a temporary array so that you can make use of an initializer. Because the vector class defines a constructor that takes a range of iterators, you can use the array to initialize your vector:
#include <iostream>
#include <vector>
using namespace std;
int main()
{
int a[] = {1,2,3,4,5};
vector<int> v(a, a + 5);
// Use the vector
}So here's what happened.
I was on DaniWeb getting help, and while waiting on someone to reply I looked through the sticky threads. I sent my C++ professor the link to Performance Tips and this thread on Thursday (i think). He sent me a message back saying he liked …