qs_save: qs_save

In qs2: Efficient Serialization of R Objects

qs_save

Description

Saves an object to disk using the qs2 format.

Usage

qs_save(object, file, compress_level = 3L,
shuffle = TRUE, nthreads = 1L)

Arguments

object	The object to save.
file	The file name/path.
compress_level	The compression level used (default 3). The maximum and minimum possible values depends on the version of ZSTD library used. As of ZSTD 1.5.6 the maximum compression level is 22, and the minimum is -131072. Usually, values in the low positive range offer very good performance in terms of speed and compression.
shuffle	Whether to allow byte shuffling when compressing data (default: TRUE).
nthreads	The number of threads to use when compressing data (default: 1).

Value

No value is returned. The file is written to disk.

Examples

x <- data.frame(int = sample(1e3, replace=TRUE),
        num = rnorm(1e3),
        char = sample(state.name, 1e3, replace=TRUE),
         stringsAsFactors = FALSE)
myfile <- tempfile()
qs_save(x, myfile)
x2 <- qs_read(myfile)
identical(x, x2) # returns true

# qs2 support multithreading
qs_save(x, myfile, nthreads=1)
x2 <- qs_read(myfile, nthreads=1)
identical(x, x2) # returns true

qs2 documentation built on Sept. 30, 2024, 9:44 a.m.