list.find: Find a specific number of elements in a list or vector...

In rlist: A Toolbox for Non-Tabular Data Manipulation

Description

Find a specific number of elements in a list or vector satisfying a given condition

Usage

list.find(.data, cond, n = 1L)

Arguments

.data	A list or vector
cond	A logical lambda expression
n	The number of items to find. (n = 1L by default)

Value

A list or vector of at most n elements in .data found to satisfy cond.

Examples

x <- list(p1 = list(type='A',score=list(c1=10,c2=8)),
       p2 = list(type='B',score=list(c1=9,c2=9)),
       p3 = list(type='B',score=list(c1=9,c2=7)))
list.find(x, type=='B', 1)
list.find(x, min(score$c1,score$c2) >= 9)

Example output

$p2
$p2$type
[1] "B"

$p2$score
$p2$score$c1
[1] 9

$p2$score$c2
[1] 9



$p2
$p2$type
[1] "B"

$p2$score
$p2$score$c1
[1] 9

$p2$score$c2
[1] 9

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