slapply: Apply a function over a list-like object preserving its...

In genomaths/GenomAutomorphism: Compute the automorphisms between DNA's Abelian group representations

Apply a function over a list-like object preserving its attributes

Description

This function apply a function over a list-like object preserving its attributes and simplify (if requested) the list as sapply function does. slapply returns a list of the same length as 'x', each element of which is the result of applying FUN to the corresponding element of 'x'.

Usage

slapply(
  x,
  FUN,
  keep.attr = FALSE,
  class = NULL,
  simplify = TRUE,
  USE.NAMES = TRUE,
  ...
)

Arguments

x	A list-like or vector-like object.
FUN, ...	The same as described in lapply.
keep.attr	Logic. If TRUE, then the original attributes from 'x' are preserved in the returned list. Default is FALSE.
class	Name of the class to which the returned list belongs to. Default is NULL.
simplify, USE.NAMES	The same as described in sapply.

Value

Same as in ?base::lapply if keep.attr = FALSE. Otherwise same values preserving original attributes from 'x'.

Author(s)

Robersy Sanchez (https://genomaths.com).

See Also

lapply and sapply

Examples

## Create a list
x <- list(a = seq(10), beta = exp(seq(-3, 3)), 
          logic = c(TRUE, FALSE, FALSE, TRUE))
class(x) <- "nice"

## To compute the list mean for each list element using 'base::lapply'
class(slapply(x, mean, simplify = FALSE))

## Simply 'base::lapply' preserving attributes
slapply(x, mean, keep.attr = TRUE, simplify = FALSE)

## To preserve attributes and simplify
slapply(x, mean, keep.attr = TRUE, simplify = TRUE)

genomaths/GenomAutomorphism documentation built on Jan. 2, 2025, 12:25 a.m.