Trying to make a C++ (MFC) code snippet easy to reuse . What are the options?

Question

I have found myself repeatedly writing the following function :

// This function will try to find the 'item' in 'array'.
// If successful, it will return 'true' and set the 'index' appropriately.
// Otherwise it will return false.
bool CanFindItem(data_type item, const data_type* array, int array_size, int& index) const
{
    bool found = false;
    index=0;
    while(!found && i < array_size)
    {
         if (array[index] == item)
              found = true;
         else index++;             
    }

    return found;
}

Usually I write a similar function for each class/struct etc. need it.

My question is, is there a way to have this snippet ready to use without rewriting it ? I am programming in VS 2010.

score 1 · Accepted Answer · answered Apr 04 '12 at 15:04

1

You can turn it into a template by moving it to the .h file and putting template<typename data_type> at the front of the function.

You could also switch to using standard C++ features such as the std::find algorithm.

answered Apr 04 '12 at 15:04

Mark Ransom

299,747
42
398
622

score 0 · Answer 2 · answered Apr 04 '12 at 15:01

0

Even in MFC you can use modern (ie post 1995) c++ and STL constructs

answered Apr 04 '12 at 15:01

Martin Beckett

94,801
28
188
263

@wartim - sorry that was a bit mean! But before you waste time writing all these functions do look at an STL tutorial. It's complicated to begin with but it will save you years of wasted work in the long run – Martin Beckett Apr 04 '12 at 15:07

score 0 · Answer 3 · answered Apr 04 '12 at 15:05

0

You can use std::find ... There's an example using an array in the link.

(std::find (array,array + array_size, item) != array + array_size);

answered Apr 04 '12 at 15:05

Yochai Timmer

48,127
24
147
185

Trying to make a C++ (MFC) code snippet easy to reuse . What are the options?

3 Answers3