# cache_engines

0th

Percentile

##### Cache engines of other languages

This object controls how to load cached environments from languages other than R (when the chunk option engine is not 'R'). Each component in this object is a function that takes the current path to the chunk cache and loads it into the language environment.

Keywords
datasets
##### Usage
cache_engines
##### Details

The cache engine function has one argument options, a list containing all chunk options. Note that options\$hash is the path to the current chunk cache with the chunk's hash, but without any file extension, and the language engine may write a cache database to this path (with an extension).

The cache engine function should load the cache environment and should know the extension appropriate for the language.

##### Format

An object of class list of length 5.

##### References

See https://github.com/rstudio/reticulate/pull/167 for an implementation of a cache engine for Python.

##### Aliases
• cache_engines
Documentation reproduced from package knitr, version 1.22, License: GPL

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