PATH!

Summary

member or refinement selection with execution bias

Kind

Fundamental type

A sequence of elements joined by slashes, such as lib/append. A trailing slash, as in append/, gives the function itself without running it.

Sequences are immutable. They are not ANY-SERIES?, so they have no position or index, and can’t be changed in place. Elements can still be picked by index or walked with FOR-EACH; to restructure one, convert it to a BLOCK! and back. A sequence has at least two elements, and can’t contain a sequence of the same kind directly.

Historically PATH! was a series, which allowed paths that looked like words (next 'a/b) or that were empty. Making paths immutable removed those problems.