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ETS and MatchSpecs for Gleam.

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lamb src lamb_erlang_queries_ffi.erl
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src/lamb_erlang_queries_ffi.erl 

-module(lamb_erlang_queries_ffi).



-export([query_count/0, query_record/0]).



% https://www.erlang.org/doc/apps/stdlib/ets.html#fun2ms/1

%

% The parse transform is provided in the ms_transform module and the source must include file

% ms_transform.hrl in STDLIB for this pseudo function to work. Failing to include the hrl file

% in the source results in a runtime error, not a compile time error. The include file is easiest

% included by adding line . to the source file.

-include_lib("stdlib/include/ms_transform.hrl").



query_count() ->

    ets:fun2ms(fun(Record) -> true end).



query_record() ->

    ets:fun2ms(fun({_, Record}) -> Record end).