list.flatten: Flatten a nested list to a one-level list

In rlist: A Toolbox for Non-Tabular Data Manipulation

Description

Flatten a nested list to a one-level list

Usage

list.flatten(x, use.names = TRUE, classes = "ANY")

Arguments

x	list
use.names	logical. Should the names of x be kept?
classes	A character vector of class names, or "ANY" to match any class.

Details

The function is essentially a slightly modified version of flatten2 provided by Tommy at stackoverflow.com who has full credit of the implementation of this function.

Author(s)

Tommy

Examples

p <- list(a=1,b=list(b1=2,b2=3),c=list(c1=list(c11='a',c12='x'),c2=3))
list.flatten(p)

p <- list(a=1,b=list(x="a",y="b",z=10))
list.flatten(p, classes = "numeric")
list.flatten(p, classes = "character")

Example output

$a
[1] 1

$b.b1
[1] 2

$b.b2
[1] 3

$c.c1.c11
[1] "a"

$c.c1.c12
[1] "x"

$c.c2
[1] 3

$a
[1] 1

$b.z
[1] 10

$b.x
[1] "a"

$b.y
[1] "b"

rlist documentation built on Sept. 5, 2021, 5:30 p.m.