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-rw-r--r--lib/stdlib/doc/src/qlc.xml81
1 files changed, 47 insertions, 34 deletions
diff --git a/lib/stdlib/doc/src/qlc.xml b/lib/stdlib/doc/src/qlc.xml
index fe60c2e9bb..34f7c5bab9 100644
--- a/lib/stdlib/doc/src/qlc.xml
+++ b/lib/stdlib/doc/src/qlc.xml
@@ -4,7 +4,7 @@
<erlref>
<header>
<copyright>
- <year>2004</year><year>2016</year>
+ <year>2004</year><year>2019</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -581,11 +581,13 @@ gb_iter(I0, N, EFun) ->
<input>{K} &lt;- ets:table(E1),</input>
<input>K == 2.71 orelse K == a]),</input>
<input>io:format("~s~n", [qlc:info(Q1)]).</input>
-ets:match_spec_run(lists:flatmap(fun(V) ->
- ets:lookup(20493, V)
- end,
- [a,2.71]),
- ets:match_spec_compile([{{'$1'},[],['$1']}]))</pre>
+ets:match_spec_run(
+ lists:flatmap(fun(V) ->
+ ets:lookup(#Ref&lt;0.3098908599.2283929601.256025>,
+ V)
+ end,
+ [a, 2.71]),
+ ets:match_spec_compile([{{'$1'}, [], ['$1']}]))</pre>
<p>In the example, operator <c>==/2</c> has been handled
exactly as <c>=:=/2</c> would have been handled. However,
@@ -607,9 +609,10 @@ ets:match_spec_run(lists:flatmap(fun(V) ->
<input>end,</input>
<input>Q2 = F2({2,2}),</input>
<input>io:format("~s~n", [qlc:info(Q2)]).</input>
-ets:table(53264,
+ets:table(#Ref&lt;0.3098908599.2283929601.256125>,
[{traverse,
- {select,[{{'$1','$2'},[{'==','$1',{const,{2,2}}}],['$2']}]}}])
+ {select,
+ [{{'$1', '$2'}, [{'==', '$1', {const, {2, 2}}}], ['$2']}]}}])
3> <input>lists:sort(qlc:e(Q2)).</input>
[a,b,c]</pre>
@@ -629,8 +632,9 @@ ets:table(53264,
<input>end,</input>
<input>Q3 = F3({2,2}),</input>
<input>io:format("~s~n", [qlc:info(Q3)]).</input>
-ets:match_spec_run(ets:lookup(86033, {2,2}),
- ets:match_spec_compile([{{'$1','$2'},[],['$2']}]))
+ets:match_spec_run(ets:lookup(#Ref&lt;0.3098908599.2283929601.256211>,
+ {2, 2}),
+ ets:match_spec_compile([{{'$1', '$2'}, [], ['$2']}]))
5> <input>qlc:e(Q3).</input>
[b]</pre>
@@ -892,21 +896,21 @@ begin
V1 =
qlc:q([
SQV ||
- SQV &lt;- [x,y]
+ SQV &lt;- [x, y]
],
- [{unique,true}]),
+ [{unique, true}]),
V2 =
qlc:q([
SQV ||
- SQV &lt;- [a,b]
+ SQV &lt;- [a, b]
],
- [{unique,true}]),
+ [{unique, true}]),
qlc:q([
{X,Y} ||
X &lt;- V1,
Y &lt;- V2
],
- [{unique,true}])
+ [{unique, true}])
end</pre>
<p>In the following example QLC <c>V2</c> has
been inserted to show the joined generators and the join
@@ -927,19 +931,21 @@ begin
V1 =
qlc:q([
P0 ||
- P0 = {W,Y} &lt;- ets:table(17)
+ P0 = {W, Y} &lt;-
+ ets:table(#Ref&lt;0.3098908599.2283929601.256549>)
]),
V2 =
qlc:q([
- [G1|G2] ||
+ [G1 | G2] ||
G2 &lt;- V1,
- G1 &lt;- ets:table(16),
+ G1 &lt;-
+ ets:table(#Ref&lt;0.3098908599.2283929601.256548>),
element(2, G1) =:= element(1, G2)
],
- [{join,lookup}]),
+ [{join, lookup}]),
qlc:q([
- {X,Z,W} ||
- [{X,Z}|{W,Y}] &lt;- V2
+ {X, Z, W} ||
+ [{X, Z} | {W, Y}] &lt;- V2
])
end</pre>
</desc>
@@ -1080,27 +1086,27 @@ begin
V1 =
qlc:q([
P0 ||
- P0 = {X,Z} &lt;-
- qlc:keysort(1, [{a,1},{b,4},{c,6}], [])
+ P0 = {X, Z} &lt;-
+ qlc:keysort(1, [{a, 1}, {b, 4}, {c, 6}], [])
]),
V2 =
qlc:q([
P0 ||
- P0 = {W,Y} &lt;-
- qlc:keysort(2, [{2,a},{3,b},{4,c}], [])
+ P0 = {W, Y} &lt;-
+ qlc:keysort(2, [{2, a}, {3, b}, {4, c}], [])
]),
V3 =
qlc:q([
- [G1|G2] ||
+ [G1 | G2] ||
G1 &lt;- V1,
G2 &lt;- V2,
element(1, G1) == element(2, G2)
],
- [{join,merge},{cache,list}]),
+ [{join, merge}, {cache, list}]),
qlc:q([
- {A,X,Z,W} ||
- A &lt;- [a,b,c],
- [{X,Z}|{W,Y}] &lt;- V3,
+ {A, X, Z, W} ||
+ A &lt;- [a, b, c],
+ [{X, Z} | {W, Y}] &lt;- V3,
X =:= Y
])
end</pre>
@@ -1141,14 +1147,21 @@ ets:match_spec_run(
gb_trees:lookup(K,
gb_trees:from_orddict([]))
of
- {value,V} ->
- [{K,V}];
+ {value, V} ->
+ [{K, V}];
none ->
[]
end
end,
- [{1,a},{1,b},{1,c},{2,a},{2,b},{2,c}]),
- ets:match_spec_compile([{{{'$1','$2'},'_'},[],['$1']}]))</pre>
+ [{1, a},
+ {1, b},
+ {1, c},
+ {2, a},
+ {2, b},
+ {2, c}]),
+ ets:match_spec_compile([{{{'$1', '$2'}, '_'},
+ [],
+ ['$1']}]))</pre>
<p>Options:</p>
<list type="bulleted">
<item>