tricu

An interpreted language for exploring Tree Calculus
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wrap.scp (258B)

      1 !export wrap
      2 -- Put any input tree into a one-element list; state is ignored.
      3 -- Example: wrap 7 produces [7]. Unlike a maybe-shaped stem value, the
      4 -- result has a proper empty-list tail so other list consumers can use it.
      5 consumer wrap
      6   x @ _ => [x | []]