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
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
//! [0]
QSet<QString> set;
//! [0]
//! [1]
set.insert("one");
set.insert("three");
set.insert("seven");
//! [1]
//! [2]
set << "twelve" << "fifteen" << "nineteen";
//! [2]
//! [3]
if (!set.contains("ninety-nine"))
...
//! [3]
//! [4]
QSetIterator<QWidget *> i(set);
while (i.hasNext()) {
QWidget *w = i.next();
qDebug() << w;
}
//! [4]
//! [5]
for (auto i = set.cbegin(), end = set.cend(); i != end; ++i)
qDebug() << *i;
//! [5]
//! [6]
QSet<QString> set;
...
for (const auto &value : set)
qDebug() << value;
//! [6]
//! [7]
QSet<QString> set;
set.reserve(20000);
for (int i = 0; i < 20000; ++i)
set.insert(values[i]);
//! [7]
//! [8]
QSet<QString> set = {"January", "February", ... "December"}
// i is a QSet<QString>::iterator
for (auto i = set.begin(), end = set.end(); i != end; ++i)
qDebug() << *i;
//! [8]
//! [9]
QSet<QString> set = {"January", "February", ... "December"};
auto i = set.begin();
while (i != set.end()) {
if ((*i).startsWith('J')) {
i = set.erase(i);
} else {
++i;
}
}
//! [9]
//! [10]
QSet<QString> set;
...
const auto predicate = [](const QString &s) { return s.compare("Jeanette", Qt::CaseInsensitive) == 0; };
QSet<QString>::iterator it = std::find_if(set.begin(), set.end(), predicate);
if (it != set.end())
cout << "Found Jeanette" << endl;
//! [10]
//! [11]
QSet<QString> set = {"January", "February", ... "December"};
// i is QSet<QString>::const_iterator
for (auto i = set.cbegin(), end = set.cend(); i != end; ++i)
qDebug() << *i;
//! [11]
//! [12]
QSet<QString> set;
...
const auto predicate = [](const QString &s) { return s.compare("Jeanette", Qt::CaseInsensitive) == 0; };
QSet<QString>::const_iterator it = std::find_if(set.cbegin(), set.cend(), predicate);
if (it != set.constEnd())
cout << "Found Jeanette" << endl;
//! [12]
|
