ix.util
Class Seq

java.lang.Object
  |
  +--ix.util.Seq

public abstract class Seq

extends java.lang.Object

Seq defines some convenient methods for use with sequences, where a sequence is an Object[], a Vector, a LList, or an Enumeration. Enumerations are used as a common intermediate form for conversions and are also given some operations of their own.

A Collection can be used as the source of an Enumeration. This gives us a simple, but still open-ended, ability to handle new types.

Needs further modification to better fit Collections and Iterators

See Also:

Collection

Inner Class Summary

static class

Seq.IteratorEnumeration

Method Summary

static void	addEnumeration(Collector c, java.util.Enumeration e)
static Function1	elementAdder(Collector c)
static java.util.Enumeration	elements(java.util.Collection c)
static java.util.Enumeration	elements(LList l)
static java.util.Enumeration	elements(java.lang.Object[] a)
static java.util.Enumeration	elements(java.util.Vector v)
static java.util.Vector	fillVector(java.util.Vector v, java.util.Enumeration e)
static java.util.Enumeration	filter(java.util.Enumeration e, Predicate1 p) Takes an Enumeration e and a Predicate1 p and returns a "wrapper" Enumeration w such that the elements of w are the corresponding elements of e, omitting the elements of e for which p.trueOf returns false.
static void	forEach(java.util.Enumeration e, Function1 f) Applies a Function1 to each element of an Enumeration and discards the results.
static java.util.Enumeration	map(java.util.Enumeration e, Function1 f) Takes an Enumeration e and a Function1 f and returns a "wrapper" Enumeration w such that each element of w is the result of calling f on the corresponding element of e.
static java.util.Vector	shuffleVector(java.util.Vector v)
static java.lang.Object[]	toArray(java.util.Enumeration e)
static LList	toLList(java.util.Enumeration e)
static java.util.Vector	toVector(java.util.Enumeration e)

Methods inherited from class java.lang.Object

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

Method Detail

toVector

public static java.util.Vector toVector(java.util.Enumeration e)

fillVector

public static java.util.Vector fillVector(java.util.Vector v,
                                          java.util.Enumeration e)

toArray

public static java.lang.Object[] toArray(java.util.Enumeration e)

toLList

public static LList toLList(java.util.Enumeration e)

elements

public static java.util.Enumeration elements(java.util.Vector v)

elements

public static java.util.Enumeration elements(LList l)

elements

public static java.util.Enumeration elements(java.lang.Object[] a)

elements

public static java.util.Enumeration elements(java.util.Collection c)

forEach

public static void forEach(java.util.Enumeration e,
                           Function1 f)

Applies a Function1 to each element of an Enumeration and discards the results.

map

public static java.util.Enumeration map(java.util.Enumeration e,
                                        Function1 f)

Takes an Enumeration e and a Function1 f and returns a "wrapper" Enumeration w such that each element of w is the result of calling f on the corresponding element of e.

filter

public static java.util.Enumeration filter(java.util.Enumeration e,
                                           Predicate1 p)

Takes an Enumeration e and a Predicate1 p and returns a "wrapper" Enumeration w such that the elements of w are the corresponding elements of e, omitting the elements of e for which p.trueOf returns false.

addEnumeration

public static void addEnumeration(Collector c,
                                  java.util.Enumeration e)

elementAdder

public static Function1 elementAdder(Collector c)

shuffleVector

public static java.util.Vector shuffleVector(java.util.Vector v)