Class KeepsUnsetElements

java.lang.Object

org.ek9lang.compiler.support.streams.KeepsUnsetElements

All Implemented Interfaces:

IntPredicate

public final class KeepsUnsetElements
extends Object
implements IntPredicate

True for a stage whose buffer keeps UNSET elements, which is EVERY stage lowered with a buffer (each stage that ends the demand segment, EndsDemandSegment: sort, tail, join, group, split, async): a stream STAGE never drops an unset element - removing them is the developer's filter (Steve, 2026-10-21: "async also passes unset results"; the D24 sort rule, 2026-10-20, places them after every sorted group). So a buffer filled on the way into a stage appends with += (ListBufferCalls.keep), never with |, which drops an unset value. A TERMINAL follows its receiver's own operator - a collect as or >/>> sink (and a tee's target) other than a List gets each element through the receiver's | - except a List: KeepsUnsetIntoList.

Constructor Summary

Constructors

Constructor	Description
KeepsUnsetElements()

Method Summary

Modifier and Type	Method	Description
boolean	test(int opType)

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface IntPredicate

and, negate, or

Constructor Details

KeepsUnsetElements

public KeepsUnsetElements()

Method Details

test

public boolean test(int opType)

Specified by:

test in interface IntPredicate