bplapply: Parallel lapply-like functionality

Description

bplapply applies FUN to each element of X. Any type of object X is allowed, provided length, [, and [[ methods are available. The return value is a list of length equal to X, as with lapply.

Usage

bplapply(X, FUN, ..., BPREDO = list(), BPPARAM=bpparam())

Arguments

Any object for which methods length, [, and [[ are implemented.

FUN

The function to be applied to each element of X.

...

Additional arguments for FUN, as in lapply.

BPPARAM

An optional BiocParallelParam instance determining the parallel back-end to be used during evaluation, or a list of BiocParallelParam instances, to be applied in sequence for nested calls to BiocParallel functions.

BPREDO

A list of output from bplapply with one or more failed elements. When a list is given in BPREDO, bpok is used to identify errors, tasks are rerun and inserted into the original results.

Value

lapply.

Details

See showMethods{bplapply} for additional methods, e.g., method?bplapply("MulticoreParam").

Examples

Run this code

showMethods("bplapply")

## ten tasks (1:10) so ten calls to FUN default registered parallel
## back-end. Compare with bpvec.
fun <- function(v) {
    message("working") ## 10 tasks
    sqrt(v)
}
bplapply(1:10, fun)