water.rapids.ast.prims.reducers

Class AstCumSum

java.lang.Object

water.Iced<T>

water.rapids.ast.AstRoot<T>

water.rapids.ast.AstPrimitive

water.rapids.ast.prims.reducers.AstCumu

water.rapids.ast.prims.reducers.AstCumSum

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, java.lang.Cloneable, Freezable

public class AstCumSum
extends AstCumu

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class water.rapids.ast.prims.reducers.AstCumu

AstCumu.CumuTask, AstCumu.CumuTaskAxis1, AstCumu.CumuTaskWholeFrame

Constructor Summary

Constructors

Constructor and Description
AstCumSum()

Method Summary

Modifier and Type	Method and Description
double	init()
int	nargs() Number of function's arguments + 1.
double	op(double l, double r)
java.lang.String	str() String representation of this Ast object in the Rapids language.

Methods inherited from class water.rapids.ast.prims.reducers.AstCumu

apply, args

Methods inherited from class water.rapids.ast.AstPrimitive

description, example, exec

Methods inherited from class water.rapids.ast.AstRoot

toString

Methods inherited from class water.Iced

asBytes, clone, copyOver, frozenType, read, readExternal, readJSON, reloadFromBytes, toJsonBytes, toJsonString, write, writeExternal, writeJSON

Methods inherited from class java.lang.Object

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

Constructor Detail

AstCumSum

public AstCumSum()

Method Detail

nargs

public int nargs()

Description copied from class: AstPrimitive

Number of function's arguments + 1. Thus, a binary operator like '+' should be declared with 3 nargs: ["+", lhs, rhs]. For variable-argument functions this method should return -1.

Overrides:

nargs in class AstCumu

str

public java.lang.String str()

Description copied from class: AstRoot

String representation of this Ast object in the Rapids language. For AstPrimitives this is the name of the function; for AstParameters this is either the name of the variable, or the value of the numeric constant that the parameter represents. For more complicated constructs such as AstExec or AstFunction this method should return those objects as a Rapids string.

Overrides:

str in class AstCumu

op

public double op(double l,
                 double r)

Specified by:

op in class AstCumu

init

public double init()

Specified by:

init in class AstCumu