slogo.instruction

Class HideTurtle

java.lang.Object

slogo.GrammarElement

slogo.instruction.Instruction

slogo.instruction.HideTurtle

public class HideTurtle
extends Instruction

A HIDETURTLE instruction has no components: when called, it will hide the turtle from the GUI view. To evaluate a HIDETURTLE instruction, the turtle is made invisible and null is returned.

The value returned by evaluating a HIDETURTLE instruction is the instruction itself.

Field Summary

Fields inherited from class slogo.GrammarElement

gelementsToValue

Constructor Summary

Constructors

Constructor and Description
HideTurtle()

Method Summary

Modifier and Type	Method and Description
java.lang.Object	evaluate(Context c) Evaluate this instruction in a Context.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

HideTurtle

public HideTurtle()

Method Detail

evaluate

public java.lang.Object evaluate(Context c)

Evaluate this instruction in a Context.

Specified by:

evaluate in class Instruction

Parameters:

c - the Context for the evaluation

Returns:

null

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

a String representing this instruction as HT