org.matheclipse.core.generic

Class Predicates

java.lang.Object

org.matheclipse.core.generic.Predicates

public class Predicates
extends java.lang.Object

Method Summary

Modifier and Type	Method and Description
static Predicate<IExpr>	in(IAST ast) Returns a predicate that evaluates to true if the object reference being tested is one of the arguments of the given ast.
static Predicate<IExpr>	in(IExpr expr) Returns a predicate that evaluates to true if the object reference being tested is one of the arguments of the given ast.
static Predicate<IExpr>	isAST(ISymbol[] heads) Returns a predicate that evaluates to true if the input is an AST list, which contains one of the given header elements at index position 0.
static Predicate<IExpr>	isNumber() Returns a predicate that evaluates to true if input.isNumber() gives true.
static Predicate<IExpr>	isNumeric() Returns a predicate that evaluates to true if input.isNumeric() gives true.
static Predicate<IExpr>	isPattern() Returns a predicate that evaluates to true if the input is an instanceof IPattern.
static Predicate<IExpr>	isSignedNumber() Returns a predicate that evaluates to true if input.isSignedNumber() gives true.
static Predicate<IExpr>	isTrue(EvalEngine engine, IExpr head) Check if the evaluation of an unary AST object gives True.
static Predicate<IExpr>	isTrue(IExpr head) Check if the evaluation of an unary AST object gives True.

Methods inherited from class java.lang.Object

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

Method Detail

isTrue

public static Predicate<IExpr> isTrue(IExpr head)

Check if the evaluation of an unary AST object gives True.

Parameters:

head -

Returns:

isTrue

public static Predicate<IExpr> isTrue(EvalEngine engine,
                                      IExpr head)

Check if the evaluation of an unary AST object gives True.

Parameters:

engine -

head -

Returns:

in

public static Predicate<IExpr> in(IAST ast)

Returns a predicate that evaluates to true if the object reference being tested is one of the arguments of the given ast. It does not defensively copy the collection passed in, so future changes to it will alter the behavior of the predicate.

Parameters:

ast - the AST those arguments may contain the function input

in

public static Predicate<IExpr> in(IExpr expr)

Returns a predicate that evaluates to true if the object reference being tested is one of the arguments of the given ast. It does not defensively copy the collection passed in, so future changes to it will alter the behavior of the predicate.

Parameters:

expr - the expr which may macth the function input

isPattern

public static Predicate<IExpr> isPattern()

Returns a predicate that evaluates to true if the input is an instanceof IPattern.

Returns:

isNumber

public static Predicate<IExpr> isNumber()

Returns a predicate that evaluates to true if input.isNumber() gives true.

Returns:

isNumeric

public static Predicate<IExpr> isNumeric()

Returns a predicate that evaluates to true if input.isNumeric() gives true.

Returns:

isSignedNumber

public static Predicate<IExpr> isSignedNumber()

Returns a predicate that evaluates to true if input.isSignedNumber() gives true.

Returns:

isAST

public static Predicate<IExpr> isAST(ISymbol[] heads)

Returns a predicate that evaluates to true if the input is an AST list, which contains one of the given header elements at index position 0.