Package org.omegahat.Environment.DataStructures

Interfaces used by the language to implement extensible operator overloading, etc.

See:
Description

Interface Summary

Addable	Interface implemented by a class to allow it be interpreted by the evaluator as supporting addition operator overloading + and += .
AssignableSubset	Omegahat language interface for allowing general assignments to elements within this type of object via expressions such as
BasicFrame	Primitive, top-level interface for defining elementary methods for data frame concepts.
ConstructorCopyable	A trivial interface used only to indicate that a class has a constructor which copies an object of the same type.
Copyable	An interface that allows callers to "duplicate" an instance of an object whose class implements this interface.
DataFrame
DataVariable
Decrementable	Interface that allows an object support the -- operator in the Omegahat evaluator, by having mapping an expression of the form x++ to a method call in this interface - decrement(int).
DeepCopyable	Implementing this interface is an assertion that the class has a copy(true) method that returns a deep copy of the object.
Divisable	Interface implemented by a class to allow it be interpreted by the evaluator as supporting division operator overloading: / and /= .
ElementAssignableSubset	Intended to allow the omegahat evaluator perform the iteration over loops of assignments, etc.
ElementSubsettable
EqualityOperator	Simple interface that provides a method for implementing the overloaded operator `==' in the interactive language.
Factor	A categorical variable for which each observation can have a value from a particular set of values.
FactorLevelSet
Incrementable	Interface that allows an object support the ++ operator in the Omegahat evaluator, by having mapping an expression of the form x++ to a method call in this interface - increment(int).
MathOperable	Class used for housing constants identifying different basic math operations.
MathOperations	Aggregate of all the different interfaces used for operator overloading and math operations - Addable, Subtractable, etc.
Multiplicable	Interface implemented by a class to allow it be interpreted by the evaluator as supporting multiplication operator overloading: * and *= .
ObjectIncrementable	Omegahat language interface which is primarily a confusion with +=, which is an in-place assignment.
OmegaCopyable	Implementing this interface is an assertion that the class has both shallow and deep copying implenented, via a method copy(boolean deep).
OrderedFactor
RandomVariable
RelationalOperator
ShallowCopyable	Implementing this interface is an assertion that the class has a copy() method that returns a shallow copy of the object.
Subsettable	Interface that allows an object to support Omegahat indexing in the form of expressions x[0], x["a"] and the corresponding [[ form (which returns a scalar, if possible, rather than an object of the same class as the source).
Subtractable	Interface implemented by a class to allow it be interpreted by the evaluator as supporting subtraction operator overloading: - and -= .
Variable

Class Summary

BasicDataFrame
BasicFactor
BasicFactorLevelSet
character	See character
integer
list
logical
numeric	S-like array of primitive doubles, with methods to perform basic types.
single	See single
vector	See org.omegahat.Environment.ObjectDataStructures.vector.

Package org.omegahat.Environment.DataStructures Description

Interfaces used by the language to implement extensible operator overloading, etc. in the interactive language and basic vector structures and lists used generally rather than specifically for data analysis, in contrast to the interfaces and classes defined in DataStructures/Data which relate to statistical data analysis and also to be contrasted with the object-based collections in