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Code Cells

Code cells are the basic unit of a notebook interactive coding experience.

In addition to providing a code editor, code cells show the output and results of executing the code.

Code Cell

The top of a code cell has a small toolbar of cell-related functions: a button to run the cell, a drop-down for switching languages, buttons for hiding the code or output and a button to copy output to the clipboard (if present).

Code Editing

Polynote provides a modern code editing experience (interactive autocomplete, error highlighting) built with the Monaco Editor.

Cell Results

The last expression in a cell is treated as its result (just as a Scala function returns the result of the last expression). This result is saved as the Out variable and is displayed in the cell's result section.

Polynote just shows the value and simple type of simple results. For more complex results, Polynote shows a data view that allows more inspection of the data.

Nested Data

Nested data can be explored directly in a tree-like view.

Nested Cell Results

case class A(foo: String)
case class B(bar: String, a: List[A])
case class C(quux: String, b: List[B])
case class D(wizzle: String, c: List[C])
case class E(wozzle: String, d: List[D])

                A("foo") :: A("floo") :: Nil
            ) :: Nil
        ) :: Nil
    ) :: D(
        C("quacks", Nil) :: Nil
    ) :: Nil

Inspecting Results

Like the buttons in the Quick Inspector, the View Data, View Schema, and Plot Data buttons each create a new Viz Cell underneath the cell.