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silk
Class Pair  

java.lang.Object
  silk.Pair

All Implemented Interfaces:

java.io.Serializable

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public class Pair

extends java.lang.Object

implements java.io.Serializable

A Pair has two fields, first and rest (sometimes called car and cdr). The empty list is represented as a Pair, with both fields empty. (In Scheme it is an error to ask access those fields, but we don't complain.)

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Field Summary
static Pair	EMPTY           The empty list.
java.lang.Object	first           The first element of the pair.
java.lang.Object	rest           The other element of the pair.

 

Constructor Summary

Pair(java.lang.Object first, java.lang.Object rest)           Build a pair from two components.

 

Method Summary
boolean	equals(java.lang.Object that)           Two pairs are equal if their first and rest fields are equal.
private  boolean	equalsFirst(Pair that)
java.lang.Object	getEltNover2(int n)
int	hashCode()           Lists that are (equal?) should have the same hashCode.
boolean	isEmpty()
int	length()           The length of a proper list.
java.lang.Object	listTail(int n)           Find the nth tail of a list, zero-based.
java.lang.Object	nth(int n)           Find the nth element of a list, zero-based
java.lang.Object	reverse()           Reverse the elements of a list.
java.lang.Object	second()           Return the second element of a list.
java.lang.Object	setEltNover2(int n, java.lang.Object v)
java.lang.StringBuffer	stringifyPair(boolean quoted, java.lang.StringBuffer buf)           Build up a String representation of the Pair in a StringBuffer.
java.lang.Object	third()           Return the third element of a list.
java.lang.String	toString()           Return a String representation of the pair.

 

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

 

Field Detail

first

public java.lang.Object first

The first element of the pair.

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rest

public java.lang.Object rest

The other element of the pair.

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EMPTY

public static final Pair EMPTY

The empty list. It's first and rest fields are also EMPTY.

Constructor Detail

Pair

public Pair(java.lang.Object first,
            java.lang.Object rest)

Build a pair from two components.

Method Detail

second

public java.lang.Object second()

Return the second element of a list.

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third

public java.lang.Object third()

Return the third element of a list.

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reverse

public java.lang.Object reverse()

Reverse the elements of a list.

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hashCode

public int hashCode()

Lists that are (equal?) should have the same hashCode.

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equals

public boolean equals(java.lang.Object that)

Two pairs are equal if their first and rest fields are equal.

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equalsFirst

private boolean equalsFirst(Pair that)

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toString

public java.lang.String toString()

Return a String representation of the pair.

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stringifyPair

public java.lang.StringBuffer stringifyPair(boolean quoted,
                                            java.lang.StringBuffer buf)

Build up a String representation of the Pair in a StringBuffer.

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length

public int length()

The length of a proper list.

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nth

public java.lang.Object nth(int n)

Find the nth element of a list, zero-based

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listTail

public java.lang.Object listTail(int n)

Find the nth tail of a list, zero-based.

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isEmpty

public boolean isEmpty()

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getEltNover2

public java.lang.Object getEltNover2(int n)

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setEltNover2

public java.lang.Object setEltNover2(int n,
                                     java.lang.Object v)

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Home >> All >> [ silk overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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