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Matches an item in the tuples list
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Matches an item in the tuples list
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I have a List of tuples of the form (string, int). I'm trying to search through the list and return the tuple whose string component matches the parameter, as in: let find_tuple string_name tuples_list =
How can I do this? I can't quite wrap my head around it. Is there a way to use matching syntax like (string, _) ->...?
You can achieve this as following
let rec find_tuple string_name tuples_list =
match tuples_list with
[] -> raise Not_found
|(s, i)::tl -> if s = string_name then (s, i)
else find_tuple string_name tl
or simply
List.find (fun s -> fst s = string_name) tuples_list
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