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R package fstcore contains R bindings to the C++ fstlib library which allows interfacing with fst files. It also contains the LZ4 and ZSTD sources used for compression. fstcore exists as a package separate from the fst package to facilitate independent updates to the fstlib, LZ4 and ZSTD libraries and is used as a backend to fst.


Package fstcore is automatically installed as a dependency when you install the fst package from CRAN. If you need to install it directly, you can use:


You can also use the development version from GitHub:

# install.packages("devtools")
devtools::install_github("fstpackage/fstcore", ref = "develop")

Basic usage

Please refer to to get an introduction to using the fst package.


Questions, ideas and issues can be best reported in the fst package repository.