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I have a question. If Module Map is in standard OCaml ? I cannot find answer in the internet. Additionaly, what is difference between Map and Set?

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  • You second question should be posted separately. It is entirely unrelated to the first question. Commented Dec 10, 2013 at 22:53

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It depends on what you mean by "standard" OCaml. The compiler is distributed with a small library, and yes that does have a Map module. Its documentation is here. This library is often called the "Standard Library", but there are actually two other libraries that are more comprehensive: Batteries and Core. They both also have a Map module.

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I think the term "standard library" is well-defined. Third-party libraries are not part of the standard library.
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Yes, Map is a standard module in OCaml: http://caml.inria.fr/pub/docs/manual-ocaml/libref/Map.html

To know the diff between map and set, you better have a look at Difference between HashSet and HashMap?

Map in OCaml is like HashMap in Java, so does Set.

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It's more like TreeMap and TreeSet in Java.
@newacct True, I just thought the OP even does not know what is Map and what is Set, so HashMap and HashSet are simpler to understand

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