R: Get all common cases by expression for a list

list.common {rlist} | R Documentation

## Get all common cases by expression for a list

### Description

Get all common cases by expression for a list

### Usage

    list.common(.data, expr)

### Arguments

`.data` | `list`
`expr` | An anonymous (or "lambda") expression to determine common cases. If one is not specified, `list.common` simply returns all identical sub-elements within lists.

### Examples

    x <- list(c('a','b','c'),c('a','b'),c('b','c'))
    list.common(x, .)
    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.common(x,type)
    list.common(x,names(score))

    foo <- list(x = LETTERS[1:3], y = LETTERS[3:5])
    list.common(foo)

[Package rlist version 0.4.6.1 Index]