9 lines
859 B
Markdown
9 lines
859 B
Markdown
# Paths
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*See also [[How do we notate paths?]], which in part supercedes this.*
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A path is essentially a list of keywords.
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However, the path `(:aardvark :beluga :coeleocanth :dodo)` may be denoted `:aardvark:beluga:coeleocanth:dodo` and will be expanded into a list by the reader. If the value of `:ardvark` in the current environment is a map, and the value of `:beluga` in that map is a map, and the value of `:coeleocanth` in that map is a map, then the value of the path `:aardvark:beluga:coeleocanth:dodo` is whatever the value of `:dodo` is in the map indicated by `:aardvark:beluga:coeleocanth`; however if the path cannot be fully satisfied the value is `nil`.
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The notation `::aardvark:beluga:coeleocanth:dodo` is expanded by the reader into `((oblist) :aardvark :beluga :coeleocanth :dodo)`, or, in other words, is a path from the root namespace. |