# \#queue

**URL:** https://discuss.ocaml.org/tag/queue/114.md

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## [Breadth first search printing twice](https://discuss.ocaml.org/t/breadth-first-search-printing-twice/13145)

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**Author:** [@gokulhari](https://discuss.ocaml.org/u/gokulhari)\
**Replies:** 5\
**Last updated:** [October 4, 2023, 7:47pm UTC](https://discuss.ocaml.org/t/breadth-first-search-printing-twice/13145 "2023-10-04T19:47:26Z")

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Hi, I am trying something rudimentary for a BFS using pattern matching. Here is the example: type 'a tree = | Leaf | Node of 'a \* 'a tree \* 'a tree let t = Node(4, Node(2, Node(1, Leaf, Leaf), Node(3, Leaf, Leaf…

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## [Are there any OCaml solutions for DBMS connection pooling and query/request queues?](https://discuss.ocaml.org/t/are-there-any-ocaml-solutions-for-dbms-connection-pooling-and-query-request-queues/1028)

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**Author:** [@egoholic](https://discuss.ocaml.org/u/egoholic)\
**Replies:** 4\
**Last updated:** [November 2, 2017, 9:09am UTC](https://discuss.ocaml.org/t/are-there-any-ocaml-solutions-for-dbms-connection-pooling-and-query-request-queues/1028 "2017-11-02T09:09:56Z")

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Are there any OCaml solutions for DBMS connection pooling and query/request queues? First of all I’m interested in solutions for PostgreSQL RDBMS. P.S. Dear admins, could you please add category for DB-related questions…