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teal.code

Overview

teal.code is an R library providing tools to store code and an execution environment associated with it. The features include:

• the qenv class for tracking code and storing variables that integrates well with shiny reactive expressions for use in shiny applications whose outputs require reproducibility (i.e. the code used in the application can be retrieved and rerun)
• ability to chain and join qenv objects together to provide fine-grained control over executed code
• automatic handling of errors and warnings encountered when executed code

Installation

# stable versions
install.packages('teal.code')

# install.packages("pak")
pak::pak("insightsengineering/teal.code@*release")

Alternatively, you might want to use the development version available on r-universe.

# beta versions
install.packages('teal.code', repos = c('https://pharmaverse.r-universe.dev', getOption('repos')))

# install.packages("pak")
pak::pak("insightsengineering/teal.code")

Usage

To understand how to use this package, please refer to the Getting Started article, which provides multiple examples of code implementation.

Below is the showcase of the example usage

library(teal.code)
my_qenv <- qenv() |> eval_code("x <- 5")
my_qenv
#> <environment: 0x00000225cc85c7a0> [L]
#> Parent: <environment: package:teal.code>
#> Bindings:
#> • x: <dbl> [L]
get_env(my_qenv)
#> <environment: 0x00000225cc85c7a0>
ls(get_env(my_qenv))
#> [1] "x"

qenv_2 <- eval_code(my_qenv, "y <- x * 2") |> eval_code("z <- y * 2")
qenv_2
#> <environment: 0x00000225ca866d68> [L]
#> Parent: <environment: package:teal.code>
#> Bindings:
#> • x: <dbl> [L]
#> • y: <dbl> [L]
#> • z: <dbl> [L]
get_env(qenv_2)
#> <environment: 0x00000225ca866d68>
ls(get_env(qenv_2))
#> [1] "x" "y" "z"

qenv_2[["y"]]
#> [1] 10

cat(get_code(qenv_2))
#> x <- 5
#> y <- x * 2
#> z <- y * 2

Getting help

If you encounter a bug or have a feature request, please file an issue. For questions, discussions, and updates, use the teal channel in the pharmaverse slack workspace.

Stargazers and Forkers

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These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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