Playground

Each card of this page is the same glyph as on the other pages. Build a larger document, and its picture is made of the same parts.

Start fromArithmeticNamesA choiceEffectsNo capabilityA missing nameA treeA type as a path

Select a card to edit it. The picture evaluates after each change.

seq

1. 1
   adda

   number

   1

   =1

   +

   number

   2

   =2

   =3
2. 2
   multiplyb

   ref

   namesa

   =3

   ×

   number

   10

   =10

   =30
3. 3
   ▸log

   ref

   namesb

   =30

   =30

=30

The selected card: seq

Name

Add a partPut in a list

Its result =30

Its steps, in order. The result of a named step is a name for the later steps.

The world: the effects, in order

1. 1log30

The result: =30Step through it

Edit the JSON

{ "type": "seq", "value": [ { "type": "add", "value": [1, 2], "name": "a" }, { "type": "multiply", "value": [ { "type": "ref", "value": ["names", "a"] }, 10 ], "name": "b" }, { "type": "log", "value": [ { "type": "ref", "value": ["names", "b"] } ] } ] }

Use this JSON

How to build

1. Select a starting document, or keep the one that is there.
2. Select a card. The panel shows its kind, its value and its name.
3. Change the kind to replace the card with a new document of that kind.
4. Select Add a part to add a part to a list. Select Put in a list to nest the card one level deeper.
5. Select Step through it to see each event of the evaluation.

The JSON under the picture is the document. Change it, and the picture changes.