list.which: Give the indices of list elements satisfying a given condition

Description

Give the indices of list elements satisfying a given condition

Usage

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list.which(.data, cond)

Arguments

.data

A list or vector

cond

A logical lambda expression

Value

an integer vector

Examples

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

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