Method enumerate()

Method enumerate

array(int) enumerate(int n)
array enumerate(int n, void|mixed step, void|mixed start, void|function(:void) operator)

Description

Create an array with an enumeration, useful for initializing arrays or as first argument to map() or foreach().

The defaults are: step = 1, start = 0, operator = `+

Advanced use

The resulting array is calculated like this:

array enumerate(int n, mixed step, mixed start, function operator)
{
  array res = allocate(n);
  for (int i=0; i < n; i++)
  {
    res[i] = start;
    start = operator(start, step);
  }
  return res;
}

See also

map(), foreach()