org.matheclipse.core.eval

Class LastCalculationsHistory

java.lang.Object

org.matheclipse.core.eval.LastCalculationsHistory

All Implemented Interfaces:

java.io.Serializable

public class LastCalculationsHistory
extends java.lang.Object
implements java.io.Serializable

Contains the last N entries of the calculation history.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
LastCalculationsHistory(int n) Contains the last N output entries of the calculation history.

Method Summary

Modifier and Type	Method and Description
void	add(IExpr entry) Add a new calculation to the history.
IExpr	get(int index) Get the history entry at the given index.
int	size()

Methods inherited from class java.lang.Object

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

Constructor Detail

LastCalculationsHistory

public LastCalculationsHistory(int n)

Contains the last N output entries of the calculation history.

Parameters:

n - maximum capacity of the last calculated entries which the history could contain.

Method Detail

add

public void add(IExpr entry)

Add a new calculation to the history. Only the last N calculations are stored in the history. It may be that the last N+1 entry will be overriden by the new entry.

Parameters:

entry -

get

public IExpr get(int index)

Get the history entry at the given index. If the index is positive it ranges from 1 to fAllEntriesCounter. If the index is negative it ranges from -1 to -fAllEntriesCounter.

Parameters:

index -

Returns:

null if the output history isn't available for the given index.

size

public int size()