Preview 6 Release Notes

Primitive Literal Type Constraints

All primitive types now fully support literal constraints. This means that just as you could define a union of specific text or number before, this now extends to also include uuid, instant and all duration types.

Regular Expression Patterns

text has been expanded with a new constraint type, namely Regular Expressions. This means that a text type can be defined as a Regular Expression, and can hold any matching text. This is especially using when doing text matching:

from input match
  /hot dog/ |> 'It''s probably a hot dog'
  /hot/ |> 'It''s something hot'
  /dog/ |> 'It''s dog-ish'
  |> 'Not Hot Dog'

Parser Improvement of Arithmetic Operators

In preview 5, the right hand side of a logical operation was not eagerly evaluated. This meant that you needed to resort to parameters in order to compare the result of an arithmetic operation. In preview 6, the right-hand arithmetic operation is eagerly evaluated:

// In preview 5:
from 1 < (1 + 1)

// In preview 6:
from 1 < 1 + 1

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Test it Test Preview 6 in the interactive playground

Discuss it I'd love to hear your feedback