Class Fold
- java.lang.Object
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- com.singularsys.jep.functions.PostfixMathCommand
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- com.singularsys.jep.functions.BinaryFunction
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- com.singularsys.extensions.lambda.Fold
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- All Implemented Interfaces:
JepComponent
,PostfixMathCommandI
,java.io.Serializable
public class Fold extends BinaryFunction implements JepComponent
Fold or reduce a list using a lambda function to reduce the list down to a single argument.Sum = [x,y]=>x+y fold(Sum, [1,2,3,4,5])
- See Also:
- Serialized Form
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Field Summary
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Fields inherited from class com.singularsys.jep.functions.PostfixMathCommand
curNumberOfParameters, name, NaN, numberOfParameters
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Constructor Summary
Constructors Constructor Description Fold()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.Object
eval(java.lang.Object l, java.lang.Object r)
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, run
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Methods inherited from class com.singularsys.jep.functions.PostfixMathCommand
asArray, asBool, asDouble, asInt, asLong, asStrictInt, asString, checkNumberOfParameters, getName, getNumberOfParameters, setCurNumberOfParameters, setName, toString, toString
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Method Detail
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eval
public java.lang.Object eval(java.lang.Object l, java.lang.Object r) throws EvaluationException
- Specified by:
eval
in classBinaryFunction
- Throws:
EvaluationException
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init
public void init(Jep jep)
Description copied from interface:JepComponent
Initialize the component. This methods 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 interfaceJepComponent
- Parameters:
jep
- the current Jep instance
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getLightWeightInstance
public JepComponent getLightWeightInstance()
Description copied from interface:JepComponent
Gets a light-weight instance suitable for using in multiple threads.- Specified by:
getLightWeightInstance
in interfaceJepComponent
- Returns:
- either an new instance, null or 'this'.
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