Description Usage Arguments Value Examples
evalCode
tries to evaluate code given as a sting. In case of an error, a
modal pops up showing the resulting error message.
1 | evalCode(code, env = parent.frame())
|
code |
A |
env |
The environment where the code should be evaluated. Defaults to the calling environment. |
The result of the specified expression or NULL
in case of an error
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | ## Not run:
shinyApp(
fluidPage(
textAreaInput("code", "code", "# intended typo\nrnrm(100)"),
actionButton("evaluate", "evaluate"),
verbatimTextOutput("result")
),
function(input, output, session){
res <- eventReactive(
input$evaluate,
evalCode(input$code)
)
output$result <- renderPrint(res())
}
)
## End(Not run)
|
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