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docs: using code from the test dir

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This commit is contained in:
VB
2014-06-03 12:06:17 +10:00
parent 0681282c55
commit 281c947e9a
23 changed files with 368 additions and 182 deletions
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52
test/algorithms.cpp
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@@ -55,13 +55,42 @@ ints_to_strings()
BOOST_TEST(strings[3] == "0X12");
}
static
void
strings_to_ints_simple()
{
//[algorithm_simple
/*`For example, the following snippet converts an array of integers from their textual hexadecimal
representation and assigns INT_MAX to those which fail to convert:
*/
boost::array<char const*, 5> strings = {{ "0XF", "0X10", "0X11", "0X12", "not an int" }};
std::vector<int> integers;
boost::cstringstream_converter cnv; // stringstream-based char converter
std::transform(
strings.begin(),
strings.end(),
std::back_inserter(integers),
boost::convert<int>(cnv(std::hex)).value_or(INT_MAX));
BOOST_TEST(integers.size() == 5);
BOOST_TEST(integers[0] == 15);
BOOST_TEST(integers[1] == 16);
BOOST_TEST(integers[2] == 17);
BOOST_TEST(integers[3] == 18);
BOOST_TEST(integers[4] == INT_MAX); // Failed conversion
//]
}
static
void
strings_to_ints()
{
boost::array<char const*, 5> strings = {{ "0XF", "0X10", "0X11", "0X12", "not int" }};
boost::array<char const*, 5> strings = {{ "0XF", "0X10", "0X11", "0X12", "not an int" }};
std::vector<int> integers;
boost::cstringstream_converter ccnv; // stringstream-based char converter
boost::cstringstream_converter cnv; // stringstream-based char converter
////////////////////////////////////////////////////////////////////////////
// String to integer conversion.
@@ -88,7 +117,7 @@ strings_to_ints()
strings.begin(),
strings.end(),
std::back_inserter(integers),
boost::convert<int>(ccnv(std::hex)));
boost::convert<int>(cnv(std::hex)));
BOOST_TEST(!"Failed to throw");
}
@@ -104,22 +133,7 @@ strings_to_ints()
integers.clear();
////////////////////////////////////////////////////////////////////////////
// String to integer conversion. Explicit fallback, i.e. no throwing. Hex formatting.
////////////////////////////////////////////////////////////////////////////
std::transform(
strings.begin(),
strings.end(),
std::back_inserter(integers),
boost::convert<int>(ccnv(arg::base = cnv::base::hex)).value_or(-1));
BOOST_TEST(integers.size() == 5);
BOOST_TEST(integers[0] == 15);
BOOST_TEST(integers[1] == 16);
BOOST_TEST(integers[2] == 17);
BOOST_TEST(integers[3] == 18);
BOOST_TEST(integers[4] == -1); // Failed conversion
strings_to_ints_simple();
#ifdef NOT_AVAILABLE_UNTIL_CPP11