lazy_save: Save objects to files and lazy-load them

In xfun: Supporting Functions for Packages Maintained by 'Yihui Xie'

Save objects to files and lazy-load them

Description

The function lazy_save() saves objects to files with incremental integer names (e.g., the first object is saved to ⁠1.rds⁠, and the second object is saved to ⁠2.rds⁠, etc.). The function lazy_load() lazy-load objects from files saved via lazy_save(), i.e., a file will not be read until the object is used.

Usage

lazy_save(list = NULL, path = "./", method = "auto", envir = parent.frame())

lazy_load(path = "./", method = "auto", envir = parent.frame())

Arguments

list	A character vector of object names. This list will be written to an index file with 0 as the base name (e.g., ⁠0.rds⁠).
path	The path to write files to / read files from.
method	The file save/load method. It can be a string (e.g., rds, raw, or qs) or a list. See the rw argument of cache_exec(). By default, it is automatically detected by checking the existence of the index file (e.g., ⁠0.rds⁠, ⁠0.raw⁠, or ⁠0.qs⁠).
envir	The environment to get or assign objects.

Value

lazy_save() returns invisible NULL; lazy_load() returns the object names invisibly.

See Also

delayedAssign()

xfun documentation built on Nov. 1, 2024, 1:06 a.m.