QSet docs: don't use std::find for lookups

That code would normally call for QSet::find instead
(Uniform Container Find cannot come soon enough).

Since the code is showcasing a STL algorithm usage,
port it to std::find_if to showcase a real use case.

As a drive-by: fix the usage of endl with std::cout.
(Ok, it's just a variable called "cout", and I'd argue
that in example code "cout" is not the name of a
QTextStream).

Change-Id: I8686178b33c31552eb4d909a4089453d60994b79
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>

1 files changed, 6 insertions, 4 deletions

diff --git a/src/corelib/doc/snippets/code/doc_src_qset.cpp b/src/corelib/doc/snippets/code/doc_src_qset.cpp
index 4248c49642..96ef07738b 100644
--- a/src/corelib/doc/snippets/code/doc_src_qset.cpp
+++ b/src/corelib/doc/snippets/code/doc_src_qset.cpp
@@ -131,9 +131,10 @@ while (i != set.end()) {
 //! [10]
 QSet<QString> set;
 ...
-QSet<QString>::iterator it = std::find(set.begin(), set.end(), "Jeanette");
+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" << Qt::endl;
+    cout << "Found Jeanette" << endl;
 //! [10]
 
 
@@ -150,9 +151,10 @@ for (i = set.begin(); i != set.end(); ++i)
 //! [12]
 QSet<QString> set;
 ...
-QSet<QString>::iterator it = std::find(set.begin(), set.end(), "Jeanette");
+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" << Qt::endl;
+    cout << "Found Jeanette" << endl;
 //! [12]