org.matheclipse.core.builtin.function

Class ValueQ

java.lang.Object

org.matheclipse.core.eval.interfaces.AbstractCoreFunctionEvaluator

org.matheclipse.core.builtin.function.ValueQ

All Implemented Interfaces:

java.util.function.Predicate<IExpr>, ICoreFunctionEvaluator, IFunctionEvaluator, IEvaluator

public class ValueQ
extends AbstractCoreFunctionEvaluator
implements java.util.function.Predicate<IExpr>

Returns True, if the given expression is bound to a value.

Field Summary

Fields

Modifier and Type	Field and Description
static ValueQ	CONST Constructor for the unary predicate

Constructor Summary

Constructors

Constructor and Description
ValueQ()

Method Summary

Modifier and Type	Method and Description
IExpr	evaluate(IAST ast, EvalEngine engine) Returns True if the 1st argument is an atomic object; False otherwise
boolean	test(IExpr expr)

Methods inherited from class org.matheclipse.core.eval.interfaces.AbstractCoreFunctionEvaluator

numericEval, setUp

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.Predicate

and, isEqual, negate, or

Field Detail

CONST

public static final ValueQ CONST

Constructor for the unary predicate

Constructor Detail

ValueQ

public ValueQ()

Method Detail

evaluate

public IExpr evaluate(IAST ast,
                      EvalEngine engine)

Returns True if the 1st argument is an atomic object; False otherwise

Specified by:

evaluate in interface IFunctionEvaluator

Specified by:

evaluate in class AbstractCoreFunctionEvaluator

Parameters:

ast - the abstract syntax tree (AST) which should be evaluated

engine - the users current evaluation engine

Returns:

the evaluated object or null, if evaluation isn't possible

See Also:

Validate, IExpr.head(), IAST.arg1(), IAST.arg2(), IAST.arg3()

test

public boolean test(IExpr expr)

Specified by:

test in interface java.util.function.Predicate<IExpr>