index_of()

Finds the position of a value within a stack, if present.

Data signatures
index_of( stack name: $${\color{green}str}$$, value: $${\color{green}Any}$$ ǁ '' )
index_of( stack: list ǁ tuple, value: $${\color{green}Any}$$ ǁ '' )

Call signatures
index_of( stack name: Term, value: Header ǁ Term ǁ Function ǁ Variable ǁ Reference )
index_of( stack: Variable, value: Header ǁ Term ǁ Function ǁ Variable ǁ Reference )

Purpose	Value
Main focus	index_of() produces a calculated value

Context	Qualifier
Match qualifiers	onmatch
Value qualifiers	onmatch

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