fsapply | R Documentation |

Faster highly stripped down version of `sapply()`

fsapply(x, FUN)

`x` |
a vector (atomic or list) or an expression object. |

`FUN` |
the function to be applied to each element of |

This is just a wrapper for `unlist(lapply(x, FUN))`

, which will behave
as `sapply`

if `FUN`

returns an atomic vector of length 1 each
time.

Speed up over sapply is not dramatic, but can be useful in time critical code.

A vector of results of applying `FUN`

to `x`

.

Very loose version of `sapply`

which should really
only by used if you're confident about how `FUN`

is applied to each
entry in `x`

.

Robin Evans

x = list(1:1000) tmp = fsapply(x, sin) ## Not run: x = list() set.seed(142313) for (i in 1:1000) x[[i]] = rnorm(100) system.time(for (i in 1:100) sapply(x, function(x) last(x))) system.time(for (i in 1:100) fsapply(x, function(x) last(x))) ## End(Not run)

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