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HL7 / fhir-shorthand

FHIR Shorthand
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Better document ValueSet filters for regex #94

Closed cmoesel closed 1 year ago

cmoesel commented 3 years ago

For VS filters that use the regex operator, FSH supports the /myregex/ notation. E.g.,

* codes from system MYSYSTEM where concept regex /^[Ff]oo/

It's been like this in the grammar since before 1.0.0, but we failed to document it in the reference.

markkramerus commented 3 years ago

Can you think of a realistic example?

cmoesel commented 3 years ago

No, but doing a quick survey, LOINC was the only code system I saw that defined a filter that used regex: http://hl7.org/fhir/R4/loinc.html#4.3.3.8.1

Someone who knows LOINC well (not me) might be able to craft a reasonable example. Might May or Carmela have an idea? (I'd tag them, but GitHub isn't finding them).