Blocks

Blocks consist of a set of fields, an expression that defines what the block produces (given the result of the previous block combined with user input), plus some meta data.

Usage

new_block(fields, expr, name = rand_names(), ..., class = character())

is_block(x)

Arguments

fields

A list of field, each entry inheriting from "field"

expr

A quoted expression (compatible with partial substitution as implemented in base::bquote() and intended for evaluation in the context of the fields)

name

Block name

...

Further (metadata) attributes

class

Block subclass

x

An object inheriting from "block"