list_functions: Higher-order functions for dealing with lists

In rprime: Functions for Working with 'Eprime' Text Files

Higher-order functions for dealing with lists

Description

These functions were inspired by underscore.js.

Usage

pluck(key)

pluck_apply(key, xss)

pick(keys)

pick_apply(keys, xss)

Arguments

key	the name of a value in a list
xss	a list of lists
keys	a character vector of names in a list

Details

• pluck: Pluck a named value from a list

• pick: Simplify a list by picking out whitelisted names

The simple versions of pluck and pick are curried functions, meaning that they return a function which can be applied to a list. See the syntax in the usage section.

Value

pluck returns an unnamed value and pluck_apply returns a list of unnamed values. pick returns a simplified version of the original list. pick_apply returns a list of simplified lists.

rprime documentation built on June 8, 2025, 1:22 p.m.