Module coneforest.psylla

Package coneforest.psylla.core

Interface PsyLengthy

All Superinterfaces:

PsyObject

All Known Subinterfaces:

PsyBounded, PsyContainer<T>, PsyFormalArray<T>, PsyFormalDict<V>, PsyFormalQueue<T>, PsyFormalSet<T>, PsyTextual

All Known Implementing Classes:

PsyArray, PsyBitArray, PsyBitSet, PsyBlockingQueue, PsyCommand, PsyConfigDict, PsyDict, PsyErrorDict, PsyModule, PsyName, PsyNamespace, PsyProc, PsySet, PsyString, PsySystemDict

@Type("lengthy")
public interface PsyLengthy
extends PsyObject

The representation of lengthy, an object that has length in some sense. Usually the length is the number of elements in the container.

Field Summary

Fields

Modifier and Type	Field	Description
static final ContextAction	PSY_ISEMPTY	Context action of the isempty operator.
static final ContextAction	PSY_LENGTH	Context action of the length operator.

Fields inherited from interface coneforest.psylla.core.PsyObject

PSY_CLONE, PSY_EQ, PSY_HASHCODE, PSY_INSTANCEOF, PSY_NE, PSY_TONAME, PSY_TOSTRING, PSY_TYPE

Method Summary

Modifier and Type	Method	Description
default boolean	isEmpty()	Returns a boolean indicating if this container is empty (has zero length).
int	length()	Returns a length of this object.
default PsyBoolean	psyIsEmpty()	Returns a boolean indicating if this container is empty (has zero length).
default PsyInteger	psyLength()	Returns an integer representing the length of this object.

Methods inherited from interface coneforest.psylla.core.PsyObject

convert, execute, invoke, psyClone, psyEq, psyHashCode, psyInstanceOf, psyNe, psySyntax, psyToName, psyToString, psyType, toSyntaxString, typeName

Field Details

PSY_ISEMPTY

@OperatorType("isempty")
static final ContextAction PSY_ISEMPTY

Context action of the isempty operator.

PSY_LENGTH

@OperatorType("length")
static final ContextAction PSY_LENGTH

Context action of the length operator.

Method Details

length

int length()

Returns a length of this object.

Returns:

a length.

isEmpty

default boolean isEmpty()

Returns a boolean indicating if this container is empty (has zero length).

Returns:

true, if this container is empty, and false otherwise.

psyLength

default PsyInteger psyLength()

Returns an integer representing the length of this object.

Returns:

an integer length.

psyIsEmpty

default PsyBoolean psyIsEmpty()

Returns a boolean indicating if this container is empty (has zero length).

Returns:

a boolean result.