Package com.singularsys.extensions.stream.dictionary

Class StreamKeys

java.lang.Object

com.singularsys.jep.functions.PostfixMathCommand

com.singularsys.jep.functions.UnaryFunction

com.singularsys.jep.misc.dictionary.KeysIterable

com.singularsys.extensions.stream.dictionary.StreamKeys

All Implemented Interfaces:

PostfixMathCommandI, Serializable

public class StreamKeys
extends KeysIterable

Returns the keys of a dictionary as a stream of Object.

Since:

Jep 4.1, extensions 2.2.

See Also:

• Serialized Form

Nested Class Summary

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

UnaryFunction.FunctionWithException<T>

Field Summary

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

curNumberOfParameters, description, name, NaN, numberOfParameters

Constructor Summary

Constructors

Constructor	Description
StreamKeys()

Method Summary

Modifier and Type	Method	Description
Object	eval(Object l)	Evaluate the function

Methods inherited from class com.singularsys.jep.misc.dictionary.KeysIterable

eval, eval

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

instanceOf, instanceOf, instanceOf, instanceOf, run

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

asArray, asBool, asDouble, asInt, asLong, asStrictInt, asString, asType, checkNumberOfParameters, getDescription, 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

StreamKeys

public StreamKeys()

Method Details

eval

public Object eval(Object l)
            throws EvaluationException

Description copied from class: UnaryFunction

Evaluate the function

Overrides:

eval in class KeysIterable

Parameters:

l - the single argument passed in

Returns:

the result of the function

Throws:

EvaluationException - on error