org.matheclipse.core.convert

Class ExprVariables

java.lang.Object

org.matheclipse.core.convert.ExprVariables

public class ExprVariables
extends java.lang.Object

Determine the variable symbols from a Symja expression.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ExprVariables.VariablesVisitor

Constructor Summary

Constructors

Constructor and Description
ExprVariables() Create an empty instance
ExprVariables(IExpr expression) Determine the variable symbols from a Symja expression.

Method Summary

Modifier and Type	Method and Description
boolean	add(ISymbol symbol) Add the symbol to the set of variables.
void	addVarList(IExpr expression) Add the variables of the given expression
boolean	contains(IExpr o)
boolean	containsAll(java.util.Collection<? extends IExpr> c)
java.util.List<IExpr>	getArrayList()
IAST	getVarList()
java.lang.String[]	getVarListAsString()
boolean	isEmpty()
boolean	isSize(int size) Check if the expression contains the given number of variables.
IExpr[]	toArray(IExpr[] a)

Methods inherited from class java.lang.Object

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

Constructor Detail

ExprVariables

public ExprVariables()

Create an empty instance

ExprVariables

public ExprVariables(IExpr expression)

Determine the variable symbols from a Symja expression.

Method Detail

add

public boolean add(ISymbol symbol)

Add the symbol to the set of variables.

Parameters:

symbol -

Returns:

true if the underlying set did not already contain the symbol

addVarList

public void addVarList(IExpr expression)

Add the variables of the given expression

Parameters:

expression -

contains

public boolean contains(IExpr o)

Parameters:

o -

Returns:

See Also:

Set.contains(java.lang.Object)

containsAll

public boolean containsAll(java.util.Collection<? extends IExpr> c)

Parameters:

c -

Returns:

See Also:

Set.containsAll(java.util.Collection)

getVarList

public IAST getVarList()

Returns:

the varList

getArrayList

public java.util.List<IExpr> getArrayList()

getVarListAsString

public java.lang.String[] getVarListAsString()

isEmpty

public boolean isEmpty()

Returns:

See Also:

Set.isEmpty()

isSize

public boolean isSize(int size)

Check if the expression contains the given number of variables.

Parameters:

expr -

Returns:

true if the expr contains the given number of variables.

toArray

public IExpr[] toArray(IExpr[] a)

Parameters:

a -

Returns:

See Also:

java.util.Set#toArray(T[])