CoreandServices.book - Ocean - Schlumberger

Basics
The Extent class is a sealed class that provides several constructors. This one creates an
empty Extent.
Extent e = new Extent( );
Here we make a copy of the created Extent.
Extent myExt = Extent( e );
This one will create an Extent with a starting value of 10 and a size of 20. The size must
be greater than or equal to 0.
int begin = 10;
int size = 20;
Extent myExt = new Extent( begin, size );
// results is 10, 11, 12, ..., 28, 29
Create an Extent with a given starting value and of a given size but with an increment
other than 1. The size must be greater than or equal to 0, and the increment, or stride,
must not be 0.
int begin = 10;
int size = 20;
int stride = -3;
Extent myExt = new Extent( begin, size, stride );
// result is 10, 7, 4, 1, -2, -5, ..., -44, -47
The Extent class has properties that you can use to access it.
Extent extVal = new Extent(2, 10);
// result is [2, 3, 4, 5, 6, 7, 8, 9, 10, 11]
Back - This property returns value at last index.
int backVal = extVal.Back;
//result is 11
Front - This property returns value at the first index.
int frontVal = extVal.Front;
//result is 2
4-112 Ocean Application Development Framework 2008.1
Schlumberger Private