1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Module pqueue4</title>
<link rel="stylesheet" type="text/css" href="stylesheet.css" title="EDoc">
</head>
<body bgcolor="white">
<div class="navbar"><a name="#navbar_top"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
<hr>
<h1>Module pqueue4</h1>
<ul class="index"><li><a href="#description">Description</a></li><li><a href="#types">Data Types</a></li><li><a href="#index">Function Index</a></li><li><a href="#functions">Function Details</a></li></ul>
<h3><a name="Static_Priority_Queue.">Static Priority Queue.</a></h3>
This priority queue implementation depends on a static number of priorities
(-128 (high) to 128 (low)) so that tuple access times can be exploited for
quick in/out priority queue operations.
<p>Copyright © 2011-2020 Michael Truog</p>
<p><b>Version:</b> 2.0.1 Nov 26 2020 14:55:34
------------------------------------------------------------------------</p>
<p><b>Authors:</b> Michael Truog (<a href="mailto:mjtruog at protonmail dot com"><tt>mjtruog at protonmail dot com</tt></a>).</p>
<h2><a name="description">Description</a></h2>
<h3><a name="Static_Priority_Queue.">Static Priority Queue.</a></h3>
This priority queue implementation depends on a static number of priorities
(-128 (high) to 128 (low)) so that tuple access times can be exploited for
quick in/out priority queue operations. This implementation was created to
avoid the slowness within the priority queue used by both RabbitMQ and Riak
(https://github.com/basho/riak_core/blob/master/src/priority_queue.erl).
<h2><a name="types">Data Types</a></h2>
<h3 class="typedecl"><a name="type-pqueue4">pqueue4()</a></h3>
<p><tt>pqueue4() = <a href="#type-pqueue4">pqueue4</a>(any())</tt></p>
<h3 class="typedecl"><a name="type-pqueue4">pqueue4()</a></h3>
<p><tt>pqueue4(T) = {<a href="#type-priority">priority()</a> | empty, non_neg_integer(), {<a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T)}, {<a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T)}, {<a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T)}, {<a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T)}, {<a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T)}, {<a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T)}, {<a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T)}, {<a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T)}, <a href="queue.html#type-queue">queue:queue</a>(T), {<a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T)}, {<a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T)}, {<a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T)}, {<a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T)}, {<a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T)}, {<a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T)}, {<a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T)}, {<a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T), <a href="queue.html#type-queue">queue:queue</a>(T)}}</tt></p>
<h3 class="typedecl"><a name="type-priority">priority()</a></h3>
<p><tt>priority() = -128..128</tt></p>
<h2><a name="index">Function Index</a></h2>
<table width="100%" border="1" cellspacing="0" cellpadding="2" summary="function index"><tr><td valign="top"><a href="#filter-2">filter/2</a></td><td>
<h4><a name="Filter_the_priority_queue.">Filter the priority queue.</a></h4>
O(N).</td></tr>
<tr><td valign="top"><a href="#filter-3">filter/3</a></td><td>
<h4><a name="Filter_a_specific_priority_within_the_priority_queue.">Filter a specific priority within the priority queue.</a></h4>
O(N).</td></tr>
<tr><td valign="top"><a href="#in-2">in/2</a></td><td>
<h4><a name="Append_an_item_to_the_tail_of_the_0_priority_queue.">Append an item to the tail of the 0 priority queue.</a></h4>
O(1).</td></tr>
<tr><td valign="top"><a href="#in-3">in/3</a></td><td>
<h4><a name="Append_an_item_to_the_tail_of_a_specific_priority_queue.">Append an item to the tail of a specific priority queue.</a></h4>
O(1).</td></tr>
<tr><td valign="top"><a href="#is_empty-1">is_empty/1</a></td><td>
<h4><a name="Check_if_the_priority_queue_is_empty.">Check if the priority queue is empty.</a></h4>
O(1).</td></tr>
<tr><td valign="top"><a href="#is_queue-1">is_queue/1</a></td><td>
<h4><a name="Check_if_the_priority_queue_type_is_as_expected.">Check if the priority queue type is as expected.</a></h4>
O(1).</td></tr>
<tr><td valign="top"><a href="#len-1">len/1</a></td><td>
<h4><a name="Determine_the_length_of_a_priority_queue.">Determine the length of a priority queue.</a></h4>
O(1).</td></tr>
<tr><td valign="top"><a href="#new-0">new/0</a></td><td>
<h4><a name="Create_a_new_priority_queue.">Create a new priority queue.</a></h4>
O(1).</td></tr>
<tr><td valign="top"><a href="#out-1">out/1</a></td><td>
<h4><a name="Take_an_item_from_the_head_of_the_priority_queue.">Take an item from the head of the priority queue.</a></h4>
O(1) amortized, O(N) worst case.</td></tr>
<tr><td valign="top"><a href="#out-2">out/2</a></td><td>
<h4><a name="Take_an_item_of_a_specific_priority_from_the_head_of_the_queue.">Take an item of a specific priority from the head of the queue.</a></h4>
O(1) amortized, O(N) worst case.</td></tr>
<tr><td valign="top"><a href="#pout-1">pout/1</a></td><td>
<h4><a name="Take_an_item_from_the_head_of_the_priority_queue.">Take an item from the head of the priority queue.</a></h4>
Includes the priority in the return value.</td></tr>
<tr><td valign="top"><a href="#remove_unique-2">remove_unique/2</a></td><td>
<h4><a name="Remove_a_unique_value_from_the_priority_queue_with_a_binary_predicate.">Remove a unique value from the priority queue with a binary predicate.</a></h4>
O(N) but smaller constant than filter/2.</td></tr>
<tr><td valign="top"><a href="#remove_unique-3">remove_unique/3</a></td><td>
<h4><a name="Remove_a_unique_value_in_a_specific_priority_within_the_priority_queue_with_a_binary_predicate.">Remove a unique value in a specific priority within the priority queue with a binary predicate.</a></h4>
O(N) but smaller constant than filter/3.</td></tr>
<tr><td valign="top"><a href="#to_list-1">to_list/1</a></td><td>
<h4><a name="Convert_the_priority_queue_to_a_list.">Convert the priority queue to a list.</a></h4>
O(N).</td></tr>
<tr><td valign="top"><a href="#to_plist-1">to_plist/1</a></td><td>
<h4><a name="Convert_the_priority_queue_to_a_list_with_priorities.">Convert the priority queue to a list with priorities.</a></h4>
O(N).</td></tr>
</table>
<h2><a name="functions">Function Details</a></h2>
<h3 class="function"><a name="filter-2">filter/2</a></h3>
<div class="spec">
<p><tt>filter(F::fun((any()) -> boolean()), Q::<a href="#type-pqueue4">pqueue4()</a>) -> <a href="#type-pqueue4">pqueue4()</a></tt><br></p>
</div><p>
<h4><a name="Filter_the_priority_queue.">Filter the priority queue.</a></h4>
O(N)</p>
<h3 class="function"><a name="filter-3">filter/3</a></h3>
<div class="spec">
<p><tt>filter(F::fun((any()) -> boolean()), P::integer(), Q::<a href="#type-pqueue4">pqueue4()</a>) -> <a href="#type-pqueue4">pqueue4()</a></tt><br></p>
</div><p>
<h4><a name="Filter_a_specific_priority_within_the_priority_queue.">Filter a specific priority within the priority queue.</a></h4>
O(N)</p>
<h3 class="function"><a name="in-2">in/2</a></h3>
<div class="spec">
<p><tt>in(X::any(), Q::<a href="#type-pqueue4">pqueue4()</a>) -> <a href="#type-pqueue4">pqueue4()</a></tt><br></p>
</div><p>
<h4><a name="Append_an_item_to_the_tail_of_the_0_priority_queue.">Append an item to the tail of the 0 priority queue.</a></h4>
O(1)</p>
<h3 class="function"><a name="in-3">in/3</a></h3>
<div class="spec">
<p><tt>in(X::any(), P::integer(), Q::<a href="#type-pqueue4">pqueue4()</a>) -> <a href="#type-pqueue4">pqueue4()</a></tt><br></p>
</div><p>
<h4><a name="Append_an_item_to_the_tail_of_a_specific_priority_queue.">Append an item to the tail of a specific priority queue.</a></h4>
O(1)</p>
<h3 class="function"><a name="is_empty-1">is_empty/1</a></h3>
<div class="spec">
<p><tt>is_empty(X1::<a href="#type-pqueue4">pqueue4()</a>) -> true | false</tt><br></p>
</div><p>
<h4><a name="Check_if_the_priority_queue_is_empty.">Check if the priority queue is empty.</a></h4>
O(1)</p>
<h3 class="function"><a name="is_queue-1">is_queue/1</a></h3>
<div class="spec">
<p><tt>is_queue(X1::<a href="#type-pqueue4">pqueue4()</a>) -> true | false</tt><br></p>
</div><p>
<h4><a name="Check_if_the_priority_queue_type_is_as_expected.">Check if the priority queue type is as expected.</a></h4>
O(1)</p>
<h3 class="function"><a name="len-1">len/1</a></h3>
<div class="spec">
<p><tt>len(X1::<a href="#type-pqueue4">pqueue4()</a>) -> non_neg_integer()</tt><br></p>
</div><p>
<h4><a name="Determine_the_length_of_a_priority_queue.">Determine the length of a priority queue.</a></h4>
O(1)</p>
<h3 class="function"><a name="new-0">new/0</a></h3>
<div class="spec">
<p><tt>new() -> <a href="#type-pqueue4">pqueue4()</a></tt><br></p>
</div><p>
<h4><a name="Create_a_new_priority_queue.">Create a new priority queue.</a></h4>
O(1)</p>
<h3 class="function"><a name="out-1">out/1</a></h3>
<div class="spec">
<p><tt>out(Q::<a href="#type-pqueue4">pqueue4()</a>) -> {{value, any()}, <a href="#type-pqueue4">pqueue4()</a>} | {empty, <a href="#type-pqueue4">pqueue4()</a>}</tt><br></p>
</div><p>
<h4><a name="Take_an_item_from_the_head_of_the_priority_queue.">Take an item from the head of the priority queue.</a></h4>
O(1) amortized, O(N) worst case</p>
<h3 class="function"><a name="out-2">out/2</a></h3>
<div class="spec">
<p><tt>out(P::integer(), Q::<a href="#type-pqueue4">pqueue4()</a>) -> {{value, any()}, <a href="#type-pqueue4">pqueue4()</a>} | {empty, <a href="#type-pqueue4">pqueue4()</a>}</tt><br></p>
</div><p>
<h4><a name="Take_an_item_of_a_specific_priority_from_the_head_of_the_queue.">Take an item of a specific priority from the head of the queue.</a></h4>
O(1) amortized, O(N) worst case</p>
<h3 class="function"><a name="pout-1">pout/1</a></h3>
<div class="spec">
<p><tt>pout(Q::<a href="#type-pqueue4">pqueue4()</a>) -> {{value, any(), integer()}, <a href="#type-pqueue4">pqueue4()</a>} | {empty, <a href="#type-pqueue4">pqueue4()</a>}</tt><br></p>
</div><p>
<h4><a name="Take_an_item_from_the_head_of_the_priority_queue.">Take an item from the head of the priority queue.</a></h4>
Includes the priority in the return value.
O(1) amortized, O(N) worst case</p>
<h3 class="function"><a name="remove_unique-2">remove_unique/2</a></h3>
<div class="spec">
<p><tt>remove_unique(F::fun((any()) -> boolean()), Q::<a href="#type-pqueue4">pqueue4()</a>) -> {boolean(), <a href="#type-pqueue4">pqueue4()</a>}</tt><br></p>
</div><p>
<h4><a name="Remove_a_unique_value_from_the_priority_queue_with_a_binary_predicate.">Remove a unique value from the priority queue with a binary predicate.</a></h4>
O(N) but smaller constant than filter/2</p>
<h3 class="function"><a name="remove_unique-3">remove_unique/3</a></h3>
<div class="spec">
<p><tt>remove_unique(F::fun((any()) -> boolean()), P::integer(), Q::<a href="#type-pqueue4">pqueue4()</a>) -> {boolean(), <a href="#type-pqueue4">pqueue4()</a>}</tt><br></p>
</div><p>
<h4><a name="Remove_a_unique_value_in_a_specific_priority_within_the_priority_queue_with_a_binary_predicate.">Remove a unique value in a specific priority within the priority queue with a binary predicate.</a></h4>
O(N) but smaller constant than filter/3</p>
<h3 class="function"><a name="to_list-1">to_list/1</a></h3>
<div class="spec">
<p><tt>to_list(Q::<a href="#type-pqueue4">pqueue4()</a>) -> list()</tt><br></p>
</div><p>
<h4><a name="Convert_the_priority_queue_to_a_list.">Convert the priority queue to a list.</a></h4>
O(N)</p>
<h3 class="function"><a name="to_plist-1">to_plist/1</a></h3>
<div class="spec">
<p><tt>to_plist(Q::<a href="#type-pqueue4">pqueue4()</a>) -> [{<a href="#type-priority">priority()</a>, list()}]</tt><br></p>
</div><p>
<h4><a name="Convert_the_priority_queue_to_a_list_with_priorities.">Convert the priority queue to a list with priorities.</a></h4>
O(N)</p>
<hr>
<div class="navbar"><a name="#navbar_bottom"></a><table width="100%" border="0" cellspacing="0" cellpadding="2" summary="navigation bar"><tr><td><a href="overview-summary.html" target="overviewFrame">Overview</a></td><td><a href="http://www.erlang.org/"><img src="erlang.png" align="right" border="0" alt="erlang logo"></a></td></tr></table></div>
<p><i>Generated by EDoc</i></p>
</body>
</html>
|
