Modularizing Reactions

Adding an expression

This script still calculates the hypotenuse but splits the calculation into two parts

1. C2 <- reactive(input$A^2 + input$B^2, label = "C2")

2. output$C <- renderText(sqrt(C2()))

• Run pythagorean-2.R and change the input values.

• Stop the app

• Run reactlogShow()

• Reactives are lazy and only update when they need to