Function usingStrings

test/snippets.cpp:282–350

// end::snippet_strings_5[]

void
usingStrings()
{
    {
        // tag::snippet_strings_1[]

        string str1; // empty string, uses the default memory resource

        string str2( make_shared_resource<monotonic_resource>() ); // empty string, uses a counted monotonic resource

        // end::snippet_strings_1[]
    }
    {
        // tag::snippet_strings_2[]

        std::string sstr1 = "helloworld";
        std::string sstr2 = "world";

        json::string jstr1 = "helloworld";
        json::string jstr2 = "world";

        assert( jstr2.insert(0, jstr1.subview(0, 5)) == "helloworld" );

        // this is equivalent to
        assert( sstr2.insert(0, sstr1, 0, 5) == "helloworld" );

        // end::snippet_strings_2[]
    }
    {
        // tag::snippet_strings_3[]

        std::string sstr = "hello";

        json::string jstr = "hello";

        assert(sstr.append({'w', 'o', 'r', 'l', 'd'}) == "helloworld");

        // such syntax is inefficient, and the same can
        // be achieved with a character array.

        assert(jstr.append("world") == "helloworld");

        // end::snippet_strings_3[]
    }

    {
        // tag::snippet_strings_4[]

        json::string str = "Boost.JSON";
        json::string_view sv = str;

        // all of these call compare(string_view)
        str.compare(sv);

        str.compare(sv.substr(0, 5));

        str.compare(str);