head.list: Return the first or last part of a list
In AEBilgrau/Bmisc: Biostatistical miscellaneous functions

Description Usage Arguments Value See Also Examples

This function recurses over the first/last elements of a list to return a compact view of the list.

## S3 method for class 'list'
head(x, n = 6L, m = n, ...)

## S3 method for class 'list'
tail(x, n = 6L, m = n, ...)

`x`	A list of R objects.
`n`	A single integer. If positive, size for the resulting object: number of elements for a vector (including lists), rows for a matrix or data frame or lines for a function. If negative, all but the n last/first number of elements of x.
`m`	As `n`. If `x` is a list, `m` controls the number of elements from the list to show. Defaults to `n`.
`...`	Arguments passed to `head`.

Returns a list of length m of the first/last element of x where the first n elements of each entry is shown.

head

x <- list(A = letters[1:9],           B = matrix(runif(30), ncol = 3),
          C = as.list(LETTERS[1:10]), D = function(x) { x^2 + 2*x + 1},
          D = combn(1:5, m = 4),      E = "A simple string.",
          F = data.frame("unif" = runif(10), "norm" = rnorm(10)))
str(x)
head(x, n = 3L)
head(x, n = 2L, m = 7L)
tail(x, n = 3L)
tail(x, n = 3L, m = 3L)