Package com.singularsys.extensions.lambda

Class AnyMatch

java.lang.Object

com.singularsys.jep.functions.PostfixMathCommand

com.singularsys.jep.functions.BinaryFunction

com.singularsys.extensions.lambda.AnyMatch

All Implemented Interfaces:

JepComponent, PostfixMathCommandI, Serializable

public class AnyMatch
extends BinaryFunction
implements JepComponent

Tests a predicate against sequence.

anyMatch(  x => x%2==0, [1,2,3]); // true
anyMatch(  x => x%2==0, [1,3,5]); // false
allMatch(  x => x%2==0, [2,4,6]); // true
allMatch(  x => x%2==0, [1,2,3]); // false
noneMatch( x => x%2==0, [1,3,5]); // true
noneMatch( x => x%2==0, [1,2,3]); // false

Using these function can be considerable faster than using

firstOr(map( x=> true, filter(x => x%2==0, [1,2,3])), false);

as it can stop processing the list as soon as a match is found.

Since:

Jep 4.1, extensions 2.2

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	AnyMatch.Type

Nested classes/interfaces inherited from class com.singularsys.jep.functions.BinaryFunction

BinaryFunction.BiFunctionWithException<T>

Field Summary

Fields inherited from class com.singularsys.jep.functions.PostfixMathCommand

curNumberOfParameters, description, name, NaN, numberOfParameters

Constructor Summary

Constructors

Constructor	Description
AnyMatch(AnyMatch.Type type)

Method Summary

Modifier and Type	Method	Description
Object	eval(Object l, Object r)	Evaluate the function
String	getDescription()	Return a description of the function from the properties file.
JepComponent	getLightWeightInstance()	Gets a light-weight instance suitable for using in multiple threads.
void	init(Jep jep)	Initialize the component.

Methods inherited from class com.singularsys.jep.functions.BinaryFunction

instanceOf, instanceOf, instanceOf, instanceOf, run

Methods inherited from class com.singularsys.jep.functions.PostfixMathCommand

asArray, asBool, asDouble, asInt, asLong, asStrictInt, asString, asType, checkNumberOfParameters, getDescription, getDescriptionWithType, getName, getNumberOfParameters, setCurNumberOfParameters, setDescription, setName, toString, toString

Methods inherited from class java.lang.Object

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

Constructor Details

AnyMatch

public AnyMatch(AnyMatch.Type type)

Method Details

eval

public Object eval(Object l,
 Object r)
            throws EvaluationException

Description copied from class: BinaryFunction

Evaluate the function

Specified by:

eval in class BinaryFunction

Parameters:

l - lhs argument

r - rhs argument

Returns:

the results

Throws:

EvaluationException - if the function cannot be evaluated.

init

public void init(Jep jep)

Description copied from interface: JepComponent

Initialize the component. This method is called whenever a component is added to Jep. Hence, it allows components to keep track of the other components they may rely on.

Specified by:

init in interface JepComponent

Parameters:

jep - the current Jep instance

getLightWeightInstance

public JepComponent getLightWeightInstance()

Description copied from interface: JepComponent

Gets a light-weight instance suitable for using in multiple threads.

Specified by:

getLightWeightInstance in interface JepComponent

Returns:

either a new instance, null or 'this'.

getDescription

public String getDescription()

Description copied from class: PostfixMathCommand

Return a description of the function from the properties file. The property name is the class name followed by ".description". The property is found using the JepMessages class, which can be configured to add additional properties files. If PostfixMathCommand.setDescription(String) has been called, return the description set by that method instead.

Specified by:

getDescription in interface PostfixMathCommandI

Overrides:

getDescription in class PostfixMathCommand

Returns:

the description of the function