rlist (version 0.4.6.1)

list.join: Join two lists by single or multiple keys

Description

Join two lists by single or multiple keys

Usage

list.join(x, y, xkey, ykey, ..., keep.order = TRUE)

Arguments

x

The first list

y

The second list

xkey

A lambda expression that determines the key for list x

ykey

A lambda expression that determines the key for list y, same to xkey if missing

...

The additional parameters passed to merge.data.frame

keep.order

Should the order of x be kept?

Examples

# NOT RUN {
l1 <- list(p1=list(name='Ken',age=20),
       p2=list(name='James',age=21),
       p3=list(name='Jenny',age=20))
l2 <- list(p1=list(name='Jenny',age=20,type='A'),
       p2=list(name='Ken',age=20,type='B'),
       p3=list(name='James',age=22,type='A'))
list.join(l1, l2, name)
list.join(l1, l2, .[c('name','age')])
# }