stackClass

datasets

Remedies a common problem in piping: not having access to
intermediate outputs of the pipe. Within a "loop", a piping intermediate
is  stored in a stack archive, data is processed, and then both the
stored intermediate and the current output are reintegrated using an
"ending" function. Two special ending functions are provided: amend and
insert. However, any ending function can be specified, including merge
functions, join functions, setNames(), etc. This framework allows the
following work-flow: focus on a particular aspect or section of a
data set, conduct specific operations, and then reintegrate changes into
the whole.

Brandon Taylor

loopr

Uses an Archive to Amend Previous Stages of a Pipe using Current
Output

stackClass function

An <code><a rd-options="" href="/link/R6Class?package=loopr&version=1.0.1" data-mini-rdoc="loopr::R6Class">R6Class</a></code> generator object

Format

 <dl>
  <dt><code>stack</code></dt><dd>A list which can directly accessed or accessed through the functions below. The bottom (original) item, set to NULL, should not be modified.</dd>
</dl> 

Fields

 <dl>
  <dt><code>push(item, name = "")</code></dt><dd>Append an <code>item</code> to the <code>stack</code> with an optional <code>name</code> and return the item</dd>
</dl> 

Methods

 <dl>
  <dt><code>height</code></dt><dd>This will return the length of the <code>stack</code></dd>
</dl> <dl>
  <dt><code>pop</code></dt><dd>This will remove the last (most recent) item from the <code>stack</code> and return it</dd>
</dl> <dl>
  <dt><code>pop</code></dt><dd>This will return, but not remove, the last (most recent) item from the <code>stack</code></dd>
</dl> 

stackClass: An implementation of a stack

Description

Usage

Arguments

Format

Fields

Methods

Active Bindings