shiny
htmltools
req()
seq()
on.exit()
observe()
isolate
observeEvent
eventReactive
reactiveTimer()
invalidateLater(ms)
git
Variables don’t update automatically when a prior value changes
temp_c <- 10 temp_f <- (temp_c * 9 / 5) + 32 temp_f #> [1] 50 temp_c <- 30 # temp_f not automatically updated temp_f #> [1] 50