Traitlets

The class TraitClass brings (some of) the functionality of the traitlets framework on which the ipywidgets framework is based to R.

The function TraitInstance returns information needed by a HasTraits object to construct a TraitClass object.

Usage

Trait(...)

TraitInstance(Class, ...)

Arguments

...

Arguments passed to the inializer

Class

An R6 Class that inherits from "TraitClass"

Functions

• Trait(): A Baseline Trait Constructor

• TraitInstance(): A "Delayed Constructor" for Traits, to be used by constructors of derived classes.

Public fields

value

The value of the trait

observers

A list of functions to be called as notification callbacks

validators

A list of functions to check the validity of a

Methods

Public methods

• TraitClass$set()

• TraitClass$get()

• TraitClass$new()

• TraitClass$clone()

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Method set()

Set the value of the trait

Usage

TraitClass$set(value, notify = FALSE)

Arguments

value

The value to be set

notify

Logical; whether to call notification callbacks

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Method get()

Get the trait value

Usage

TraitClass$get()

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Method new()

Initialize the trait, i.e. set an initial value

Usage

TraitClass$new(initial)

Arguments

initial

The initial value

coerce

Logical; whether to coerce the initial value to the approriate mode.

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Method clone()

The objects of this class are cloneable with this method.

Usage

TraitClass$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.