tabstripPanel: Create a tabstrip panel
In rstudio/shinygadgets: UI Toolkit for Shiny

Create a tabstrip panel that contains tabPanel elements. Similar to tabsetPanel, but optimized for small page sizes like mobile devices or the RStudio Viewer pane.

1	tabstripPanel(..., id = NULL, selected = NULL, between = NULL)

`...`	`tabPanel` elements to include in the tabset.
`id`	If provided, you can use `input$``id` in your server logic to determine which of the current tabs is active. The value will correspond to the `value` argument that is passed to `tabPanel`.
`selected`	The `value` (or, if none was supplied, the `title`) of the tab that should be selected by default. If `NULL`, the first tab will be selected.
`between`	A tag or list of tags that should be inserted between the content (above) and tabstrip (below).

library(shiny)

tabstripPanel(
  tabPanel("Data",
    selectInput("dataset", "Data set", ls("package:datasets"))),
  tabPanel("Subset",
    uiOutput("subset_ui")
  )
)