Hi Joe,
thanks a lot for your explanation of class interfaces! Though i was not the one
who asked, your text was quite helpful.
>> Class interfaces are also one of RB's alternatives to Function Pointers.
How will this work? On Wikipedia i found this sample in C, and i wonder how you
can get this to work in RB. (I did not figure it out). Any clues?
-----------------------------------------------------------
-----------------------------------------------------------
#include <stdio.h>
int sum = 0; /* store sum */
int product = 1; /* store product */
void fsum(int value)
{ sum += value; }
void fproduct(int value)
{ product *= value; }
void map_function_on_list(list *L, void (*functionptr)(int))
{
listnode *node;
node = L->first;
while (node != NULL)
{
functionptr(node->value); /* call function pointer */
node = node->next;
}
}
int main()
{
list *L;
... fill list with values ...
map_function_on_list(L, fsum); /* calculate the sum */
map_function_on_list(L, fproduct); /* calculate product */
printf("Sum: %d\nProduct %d\n", sum, product); /* display results */
}
------------------------------------------------------------------
------------------------------------------------------------------
best regards
Thomas
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