R-WHILE Playground

Sample
Conversion of a binary tree to its inorder and preorder traversals (recursive version) Conversion of a binary tree to its inorder and postorder traversals (iterative version) reverse swap self-interpretation of an identity function self-interpretation of reverse self-interpretation of piorder self-interpretation of self-interpretation of reverse (This will probably time out in this playground.) Infinite loop (in *both* directions) Enumeration of trees Increment 1 Increment 2 Increment 3 Increment 4 Decrement 1 Decrement 2 Decrement 3 Decrement 4 Decrement 5 reverse move a value by reversible assignments Call snoc 1 Call snoc 2 forward: inverse uncall snoc 1 forward: inverse uncall snoc 2 backward: uncall snoc 1 backward: uncall snoc 2 backward: inverse call snoc 1 backward: inverse call snoc 2 call-copy-uncall scheme
Options
About

Options

Inversion

Program2data

Expand macros

About the R-WHILE Playground

The Playground lets you try out the R-WHILE programming language in your browser without having to install anything. When you click "Execute" the program is sent to the server where it is executed and the result is returned. The R-WHILE Playground has been created by students of Yokoyama lab.

Usage

You can load example programs by clicking on the Sample dropdown in the menu and selecting an example which will then be loaded into the text area.

The code in the text area can be run by pressing the Execute button in the menu and the result will appear.

If you wish to see the inversion of the program currently written in the text area, press the Option button. The inverted program will then show up in the result window.

If the program fails, the error will be show in red in the result window. The error will explain you what went wrong and in which line, and give you useful information about the program state, for example it prints the variable store when the error occured.

R-WHILE code

Input data