Erlmongo is a pretty complete Erlang driver for mongodb. All save/update/insert are safe and return if write succeeded. It supports maps and proplists as datatypes. Strings can be lists or binaries, but strings received from mongodb (as a result of find) will be binaries. Connections are pools (def. size 10) …

DESCRIPTION. Property lists are ordinary lists containing entries in the formof either tuples, whose first elements are keys used for lookup andinsertion, or atoms, which work as shorthand for tuples {Atom, true}. (Other terms are allowed in the lists, but are ignoredby this …

Related post: http ://beebole.com/en/blog/erlang/tutorial-web-application-erlang/ 8 Mar 2015 In Erlang one of these is an inverse function for file:consult/1 , which I most conf files are used as proplists and are keysearched anyway). Write some functions to read configuration files containing JSON terms and turn them into Erlang maps. Write some code to perform sanity checks on the data in 14 Dec 2020 Tuples are typically used to throw a couple of values together, e.g. in Erlang records, keywords/proplists, or ok/error tuples. However, they can 6 Nov 2014 The Ugly Syntax Erlang myfun(Opts) - What = proplists:get_value(what,Opts, some), io:format(Doing ~s~n, [What]), L = [1, 2, 3], lists:foldl(fun(X, Property lists are ordinary lists containing entries in the form of either tuples, whose first elements are keys used for lookup and insertion, or atoms, which work as shorthand for tuples {Atom, true}.

structures available in the language. These are maps and dictionaries. Erlang/ OTP provides some modules (lists, proplist, maps, dict) for accessing and manip-. Oct 24, 2020 But I am not able to find a way to read it. How can I read "NotRegistered"?

Tuples are typically used to throw a couple of values together, e.g. in Erlang records, keywords/proplists, or ok/error tuples. However, they can also be an interesting choice to handle random-access reads from a constant sequence, i.e. a sequence that, once built, doesn’t change.

Results follow the Erlang conventions of using tagged two-tuples for both success and error results, or untagged values and exceptions. Optional arguments lists are specified using proplists rather than maps. fun ({Doc})-> << K,_ / binary >> = proplists: get_value (<< "_rev" >>, Doc, null), V = proplists: get_value (<< "_id" >>, Doc, null), Emit (<< K >>, V) end.

i looked @ similar solution, tried tune little bit, getting hard novice erlang brain work scenario above. here example of trying use make work, there errors, pattern matching related:

(Other terms are allowed in the lists, but are ignored by this module.) Helper module for working with common Erlang representations of JSON: eep 18, map, mochijson-style, and proplists. This work is inspired by ej, but handles all common JSON representations: eep-18, map, mochijson-style and proplists, the types returned by jsone, jiffy, and mochijson, for example. erlang_mod(proplists) architectures: aarch64, x86_64. erlang_mod(proplists) linux packages: rpm ©2009-2021 - Packages Search for Linux and Unix Optional arguments are either specified by using functions with higher arity (i.e. they accept more arguments) or as proplists. Results follow the Erlang conventions of using tagged two-tuples for both success and error results, or untagged values and exceptions.
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Previous message (by thread): [erlang-questions] distinguish proplists vs. lists of proplists Next message (by thread): [erlang-questions] distinguish proplists vs. lists of proplists Let's turn to http://www.erlang.org/doc/man/proplists.html to find out what a proplist is: "Property lists are ordinary lists containing entries in the form of either tuples, whose first elements are keys used for lookup and insertion, or atoms, which work as shorthand for tuples {Atom, true}." Sounds pretty clear.

erlang_mod(proplists) linux packages: rpm ©2009-2021 - Packages Search for Linux and Unix Optional arguments are either specified by using functions with higher arity (i.e. they accept more arguments) or as proplists.
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I write a function which gets proplists or list of proplists anf key. if the input is proplists I just use proplists:get_value to find a value corresponding to key. But if the input is lists of pro

DESCRIPTION¶ Property lists are ordinary lists containing entries in the form of either tuples, whose first elements are keys used for lookup and insertion, or atoms, which work as shorthand for tuples {Atom, true}.