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Jason Pochanke
2026-06-29 15:56:30 +02:00
commit 6fe57399c4
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ui/javascript/gleam_stdlib/gleam@set.erl
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-module(gleam@set).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/gleam/set.gleam").
-export([new/0, size/1, is_empty/1, insert/2, contains/2, delete/2, to_list/1, from_list/1, fold/3, filter/2, map/2, drop/2, take/2, union/2, intersection/2, difference/2, is_subset/2, is_disjoint/2, symmetric_difference/2, each/2]).
-export_type([set/1]).
-if(?OTP_RELEASE >= 27).
-define(MODULEDOC(Str), -moduledoc(Str)).
-define(DOC(Str), -doc(Str)).
-else.
-define(MODULEDOC(Str), -compile([])).
-define(DOC(Str), -compile([])).
-endif.
-opaque set(CVK) :: {set, gleam@dict:dict(CVK, list(nil))}.
-file("src/gleam/set.gleam", 32).
?DOC(" Creates a new empty set.\n").
-spec new() -> set(any()).
new() ->
{set, maps:new()}.
-file("src/gleam/set.gleam", 50).
?DOC(
" Gets the number of members in a set.\n"
"\n"
" This function runs in constant time.\n"
"\n"
" ## Examples\n"
"\n"
" ```gleam\n"
" assert new()\n"
" |> insert(1)\n"
" |> insert(2)\n"
" |> size\n"
" == 2\n"
" ```\n"
).
-spec size(set(any())) -> integer().
size(Set) ->
maps:size(erlang:element(2, Set)).
-file("src/gleam/set.gleam", 66).
?DOC(
" Determines whether or not the set is empty.\n"
"\n"
" ## Examples\n"
"\n"
" ```gleam\n"
" assert new() |> is_empty\n"
" ```\n"
"\n"
" ```gleam\n"
" assert !{ new() |> insert(1) |> is_empty }\n"
" ```\n"
).
-spec is_empty(set(any())) -> boolean().
is_empty(Set) ->
Set =:= new().
-file("src/gleam/set.gleam", 84).
?DOC(
" Inserts a member into the set.\n"
"\n"
" This function runs in logarithmic time.\n"
"\n"
" ## Examples\n"
"\n"
" ```gleam\n"
" assert new()\n"
" |> insert(1)\n"
" |> insert(2)\n"
" |> size\n"
" == 2\n"
" ```\n"
).
-spec insert(set(CVS), CVS) -> set(CVS).
insert(Set, Member) ->
{set, gleam@dict:insert(erlang:element(2, Set), Member, [])}.
-file("src/gleam/set.gleam", 108).
?DOC(
" Checks whether a set contains a given member.\n"
"\n"
" This function runs in logarithmic time.\n"
"\n"
" ## Examples\n"
"\n"
" ```gleam\n"
" assert new()\n"
" |> insert(2)\n"
" |> contains(2)\n"
" ```\n"
"\n"
" ```gleam\n"
" assert !{\n"
" new()\n"
" |> insert(2)\n"
" |> contains(1)\n"
" }\n"
" ```\n"
).
-spec contains(set(CVV), CVV) -> boolean().
contains(Set, Member) ->
_pipe = erlang:element(2, Set),
_pipe@1 = gleam_stdlib:map_get(_pipe, Member),
gleam@result:is_ok(_pipe@1).
-file("src/gleam/set.gleam", 130).
?DOC(
" Removes a member from a set. If the set does not contain the member then\n"
" the set is returned unchanged.\n"
"\n"
" This function runs in logarithmic time.\n"
"\n"
" ## Examples\n"
"\n"
" ```gleam\n"
" assert !{\n"
" new()\n"
" |> insert(2)\n"
" |> delete(2)\n"
" |> contains(2)\n"
" }\n"
" ```\n"
).
-spec delete(set(CVX), CVX) -> set(CVX).
delete(Set, Member) ->
{set, gleam@dict:delete(erlang:element(2, Set), Member)}.
-file("src/gleam/set.gleam", 147).
?DOC(
" Converts the set into a list of the contained members.\n"
"\n"
" The list has no specific ordering, any unintentional ordering may change in\n"
" future versions of Gleam or Erlang.\n"
"\n"
" This function runs in linear time.\n"
"\n"
" ## Examples\n"
"\n"
" ```gleam\n"
" assert new() |> insert(2) |> to_list == [2]\n"
" ```\n"
).
-spec to_list(set(CWA)) -> list(CWA).
to_list(Set) ->
maps:keys(erlang:element(2, Set)).
-file("src/gleam/set.gleam", 168).
?DOC(
" Creates a new set of the members in a given list.\n"
"\n"
" This function runs in loglinear time.\n"
"\n"
" ## Examples\n"
"\n"
" ```gleam\n"
" import gleam/int\n"
" import gleam/list\n"
"\n"
" assert [1, 1, 2, 4, 3, 2]\n"
" |> from_list\n"
" |> to_list\n"
" |> list.sort(by: int.compare)\n"
" == [1, 2, 3, 4]\n"
" ```\n"
).
-spec from_list(list(CWD)) -> set(CWD).
from_list(Members) ->
Dict = gleam@list:fold(
Members,
maps:new(),
fun(M, K) -> gleam@dict:insert(M, K, []) end
),
{set, Dict}.
-file("src/gleam/set.gleam", 191).
?DOC(
" Combines all entries into a single value by calling a given function on each\n"
" one.\n"
"\n"
" Sets are not ordered so the values are not returned in any specific order.\n"
" Do not write code that relies on the order entries are used by this\n"
" function as it may change in later versions of Gleam or Erlang.\n"
"\n"
" ## Examples\n"
"\n"
" ```gleam\n"
" assert from_list([1, 3, 9])\n"
" |> fold(0, fn(accumulator, member) { accumulator + member })\n"
" == 13\n"
" ```\n"
).
-spec fold(set(CWG), CWI, fun((CWI, CWG) -> CWI)) -> CWI.
fold(Set, Initial, Reducer) ->
gleam@dict:fold(
erlang:element(2, Set),
Initial,
fun(A, K, _) -> Reducer(A, K) end
).
-file("src/gleam/set.gleam", 215).
?DOC(
" Creates a new set from an existing set, minus any members that a given\n"
" function returns `False` for.\n"
"\n"
" This function runs in loglinear time.\n"
"\n"
" ## Examples\n"
"\n"
" ```gleam\n"
" import gleam/int\n"
"\n"
" assert from_list([1, 4, 6, 3, 675, 44, 67])\n"
" |> filter(keeping: int.is_even)\n"
" |> to_list\n"
" == [4, 6, 44]\n"
" ```\n"
).
-spec filter(set(CWJ), fun((CWJ) -> boolean())) -> set(CWJ).
filter(Set, Predicate) ->
{set,
gleam@dict:filter(erlang:element(2, Set), fun(M, _) -> Predicate(M) end)}.
-file("src/gleam/set.gleam", 234).
?DOC(
" Creates a new set from a given set with the result of applying the given\n"
" function to each member.\n"
"\n"
" ## Examples\n"
"\n"
" ```gleam\n"
" assert from_list([1, 2, 3, 4])\n"
" |> map(with: fn(x) { x * 2 })\n"
" |> to_list\n"
" == [2, 4, 6, 8]\n"
" ```\n"
).
-spec map(set(CWM), fun((CWM) -> CWO)) -> set(CWO).
map(Set, Fun) ->
fold(Set, new(), fun(Acc, Member) -> insert(Acc, Fun(Member)) end).
-file("src/gleam/set.gleam", 252).
?DOC(
" Creates a new set from a given set with all the same entries except any\n"
" entry found on the given list.\n"
"\n"
" ## Examples\n"
"\n"
" ```gleam\n"
" assert from_list([1, 2, 3, 4])\n"
" |> drop([1, 3])\n"
" |> to_list\n"
" == [2, 4]\n"
" ```\n"
).
-spec drop(set(CWQ), list(CWQ)) -> set(CWQ).
drop(Set, Disallowed) ->
gleam@list:fold(Disallowed, Set, fun delete/2).
-file("src/gleam/set.gleam", 270).
?DOC(
" Creates a new set from a given set, only including any members which are in\n"
" a given list.\n"
"\n"
" This function runs in loglinear time.\n"
"\n"
" ## Examples\n"
"\n"
" ```gleam\n"
" assert from_list([1, 2, 3])\n"
" |> take([1, 3, 5])\n"
" |> to_list\n"
" == [1, 3]\n"
" ```\n"
).
-spec take(set(CWU), list(CWU)) -> set(CWU).
take(Set, Desired) ->
{set, gleam@dict:take(erlang:element(2, Set), Desired)}.
-file("src/gleam/set.gleam", 290).
-spec order(set(CXC), set(CXC)) -> {set(CXC), set(CXC)}.
order(First, Second) ->
case maps:size(erlang:element(2, First)) > maps:size(
erlang:element(2, Second)
) of
true ->
{First, Second};
false ->
{Second, First}
end.
-file("src/gleam/set.gleam", 285).
?DOC(
" Creates a new set that contains all members of both given sets.\n"
"\n"
" This function runs in loglinear time.\n"
"\n"
" ## Examples\n"
"\n"
" ```gleam\n"
" assert union(from_list([1, 2]), from_list([2, 3])) |> to_list\n"
" == [1, 2, 3]\n"
" ```\n"
).
-spec union(set(CWY), set(CWY)) -> set(CWY).
union(First, Second) ->
{Larger, Smaller} = order(First, Second),
fold(Smaller, Larger, fun insert/2).
-file("src/gleam/set.gleam", 308).
?DOC(
" Creates a new set that contains members that are present in both given sets.\n"
"\n"
" This function runs in loglinear time.\n"
"\n"
" ## Examples\n"
"\n"
" ```gleam\n"
" assert intersection(from_list([1, 2]), from_list([2, 3])) |> to_list\n"
" == [2]\n"
" ```\n"
).
-spec intersection(set(CXH), set(CXH)) -> set(CXH).
intersection(First, Second) ->
{Larger, Smaller} = order(First, Second),
take(Larger, to_list(Smaller)).
-file("src/gleam/set.gleam", 326).
?DOC(
" Creates a new set that contains members that are present in the first set\n"
" but not the second.\n"
"\n"
" ## Examples\n"
"\n"
" ```gleam\n"
" assert difference(from_list([1, 2]), from_list([2, 3, 4])) |> to_list\n"
" == [1]\n"
" ```\n"
).
-spec difference(set(CXL), set(CXL)) -> set(CXL).
difference(First, Second) ->
drop(First, to_list(Second)).
-file("src/gleam/set.gleam", 345).
?DOC(
" Determines if a set is fully contained by another.\n"
"\n"
" ## Examples\n"
"\n"
" ```gleam\n"
" assert is_subset(from_list([1]), from_list([1, 2]))\n"
" ```\n"
"\n"
" ```gleam\n"
" assert !is_subset(from_list([1, 2, 3]), from_list([3, 4, 5]))\n"
" ```\n"
).
-spec is_subset(set(CXP), set(CXP)) -> boolean().
is_subset(First, Second) ->
intersection(First, Second) =:= First.
-file("src/gleam/set.gleam", 361).
?DOC(
" Determines if two sets contain no common members\n"
"\n"
" ## Examples\n"
"\n"
" ```gleam\n"
" assert is_disjoint(from_list([1, 2, 3]), from_list([4, 5, 6]))\n"
" ```\n"
"\n"
" ```gleam\n"
" assert !is_disjoint(from_list([1, 2, 3]), from_list([3, 4, 5]))\n"
" ```\n"
).
-spec is_disjoint(set(CXS), set(CXS)) -> boolean().
is_disjoint(First, Second) ->
intersection(First, Second) =:= new().
-file("src/gleam/set.gleam", 376).
?DOC(
" Creates a new set that contains members that are present in either set, but\n"
" not both.\n"
"\n"
" ## Examples\n"
"\n"
" ```gleam\n"
" assert symmetric_difference(from_list([1, 2, 3]), from_list([3, 4]))\n"
" |> to_list\n"
" == [1, 2, 4]\n"
" ```\n"
).
-spec symmetric_difference(set(CXV), set(CXV)) -> set(CXV).
symmetric_difference(First, Second) ->
difference(union(First, Second), intersection(First, Second)).
-file("src/gleam/set.gleam", 405).
?DOC(
" Calls a function for each member in a set, discarding the return\n"
" value.\n"
"\n"
" Useful for producing a side effect for every item of a set.\n"
"\n"
" The order of elements in the iteration is an implementation detail that\n"
" should not be relied upon.\n"
"\n"
" ## Examples\n"
"\n"
" ```gleam\n"
" let set = from_list([\"apple\", \"banana\", \"cherry\"])\n"
"\n"
" assert each(set, io.println) == Nil\n"
" // apple\n"
" // banana\n"
" // cherry\n"
" ```\n"
).
-spec each(set(CXZ), fun((CXZ) -> any())) -> nil.
each(Set, Fun) ->
fold(
Set,
nil,
fun(Nil, Member) ->
Fun(Member),
Nil
end
).