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shinyStep  

User-Editable R Functions in 'Shiny' Apps with a Step Debugger
View on CRAN: Click here


Download and install shinyStep package within the R console
Install from CRAN:
install.packages("shinyStep")

Install from Github:
library("remotes")
install_github("cran/shinyStep")

Install by package version:
library("remotes")
install_version("shinyStep", "0.5.1")



Attach the package and use:
library("shinyStep")
Maintained by
Han Zhang
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2026-05-29
Latest Update: 2026-05-29
Description:
A pair of 'Shiny' modules that let end users of a 'Shiny' application author their own R functions directly in the browser. Host apps can expose these modules as extension points where user-supplied code augments or replaces built-in logic, without requiring users to modify the app's source. Each module embeds an 'Ace' editor with a structured argument table, an in-frame R console rooted in the paused function's local environment, and a step debugger that handles for, while, repeat, and if/else blocks at any nesting depth. Two module flavours are provided: solo editors for testing a function in isolation with literal argument values, and embedded editors for pausing a function mid-execution inside a larger host program.
How to cite:
Han Zhang (2026). shinyStep: User-Editable R Functions in 'Shiny' Apps with a Step Debugger. R package version 0.5.1, https://cran.r-project.org/web/packages/shinyStep. Accessed 21 Aug. 2026.
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Functions, R codes and Examples using the shinyStep R package
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