smile.data.formula

Class Constant

java.lang.Object

smile.data.formula.Constant

All Implemented Interfaces:

java.io.Serializable, HyperTerm, Term

public abstract class Constant
extends java.lang.Object
implements Term

A variable in the formula. A variable can be regarded as the identity function that always returns the same value that was used as its argument.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Constant()

Method Summary

Modifier and Type	Method and Description
void	bind(StructType schema) Binds the term to a schema.
boolean	isConstant() Returns true if the term represents a constant value.
java.util.Set<java.lang.String>	variables() Returns the list of variables used in this term.

Methods inherited from class java.lang.Object

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

Methods inherited from interface smile.data.formula.Term

apply, apply, applyAsBoolean, applyAsByte, applyAsChar, applyAsDouble, applyAsFloat, applyAsInt, applyAsLong, applyAsShort, field, isVariable, measure, name, terms, type

Constructor Detail

Constant

public Constant()

Method Detail

isConstant

public boolean isConstant()

Description copied from interface: Term

Returns true if the term represents a constant value.

Specified by:

isConstant in interface Term

variables

public java.util.Set<java.lang.String> variables()

Description copied from interface: HyperTerm

Returns the list of variables used in this term.

Specified by:

variables in interface HyperTerm

bind

public void bind(StructType schema)

Description copied from interface: HyperTerm

Binds the term to a schema.

Specified by:

bind in interface HyperTerm