ix

Interface IxTransform<T,R>

Type Parameters:

T - the source value type

R - the result value type

public interface IxTransform<T,R>

Functional interface that allows transforming an upstream Iterator for each downstream next() call.

If you need per consumer-state, wrap the parent operator with compose():

 Ix.range(1, 10).compose(o -> {
     int[] counter = { 0 };
     return o.transform((it, c) -> {
         if (it.hasNext()) {
             it.next();
             c.call(++counter[0]);
             return NEXT;
         }
         return STOP;
     });
 });
 

Field Summary

Fields

Modifier and Type	Field and Description
static int	LAST
static int	NEXT
static int	STOP

Method Summary

Modifier and Type	Method and Description
int	moveNext(java.util.Iterator<T> it, IxConsumer<? super R> consumer)

Field Detail

STOP

static final int STOP

See Also:

Constant Field Values

NEXT

static final int NEXT

See Also:

Constant Field Values

LAST

static final int LAST

See Also:

Constant Field Values

Method Detail

moveNext

int moveNext(java.util.Iterator<T> it,
             IxConsumer<? super R> consumer)