List | R Documentation |
List environment
that wraps given data
and
most list functions are defined for chainable operations.Create a List environment
that wraps given data
and
most list functions are defined for chainable operations.
List(data = list())
data |
A |
Most list functions are defined in List environment
.
In addition to these functions, call(fun,...)
calls
external function fun
with additional parameters specifies in
...
.
To extract the data from List x
, call x$data
or simply
x[]
.
x <- list(p1 = list(type='A',score=list(c1=10,c2=8)), p2 = list(type='B',score=list(c1=9,c2=9)), p3 = list(type='B',score=list(c1=9,c2=7))) m <- List(x) m$filter(type=='B')$ map(score$c1) [] m$group(type)$ map(g ~ List(g)$ map(score)$ call(unlist)$ call(mean) []) [] # Subsetting, extracting, and assigning p <- List(list(a=1,b=2)) p['a'] p[['a']] p$a <- 2 p['b'] <- NULL p[['a']] <- 3
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