R: Keep taking elements while a condition holds

list.takeWhile {rlist} | R Documentation

## Keep taking elements while a condition holds

### Description

Keep taking elements out from a list or vector while a condition holds for the element. If the condition is violated for an element, the element will not be taken and all taken elements will be returned.

### Usage

    list.takeWhile(.data, cond)

### Arguments

`.data` | `list` or `vector`
`cond` | A logical lambda expression

### See Also

`list.take`, `list.skip`, `list.skipWhile`

### 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.takeWhile(x, type=='B')
    list.takeWhile(x, min(score$c1,score$c2) >= 8)

[Package rlist version 0.4.6.1 Index]