header_names_match()

Given a | delimited list of headers, checks that all exist and are in the same order.

While the function is intended for matching, substantial data is created in variables. The following variables containing header names may be useful:

• N_present

• N_unmatched

• N_misordered

• N_duplicated

(Where 'N' is a name qualifier, if given, or 'header_names_mismatch')

If you have: header_names_mismatch.m("Alpha|Beta|Cappa|Delta") and your headers are: Alpha,Delta,Beta you will have @m_present == ["Alpha"], @m_unmatched == ["Cappa"], @m_misordered = ["Delta"] and header_names_match() will return False; i.e. not match.

Note that the alias header_names_mismatch() is depreciated. Instead use header_names_match(). The name change reflects the function's match value being false if the headers do not meet expectations.

Data signatures
header_names_match( pipe delimited headers: $${\color{green}str}$$ )

Call signatures
header_names_match( pipe delimited headers: Term )

Purpose	Value
Main focus	header_names_match() produces a calculated value
Aliases	header_names_mismatch, header_names_match

Context	Qualifier
Match qualifiers	onmatch
Value qualifiers	onmatch
Name qualifier	optionally expected

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