From 840eabf15a02c42c3e8ab5d405c83b79dc20f765 Mon Sep 17 00:00:00 2001
From: Howard Hinnant <howard.hinnant@gmail.com>
Date: Fri, 7 Jul 2017 16:46:57 -0400
Subject: [PATCH] Updated Boost datetime Examples Translated (markdown)

---
 Boost-datetime-Examples-Translated.md | 40 +++++++++------------------
 1 file changed, 13 insertions(+), 27 deletions(-)

diff --git a/Boost-datetime-Examples-Translated.md b/Boost-datetime-Examples-Translated.md
index 018c034..baa9ce7 100644
--- a/Boost-datetime-Examples-Translated.md
+++ b/Boost-datetime-Examples-Translated.md
@@ -32,7 +32,7 @@ look if ported to this library.
     #include <cassert>
     #include <iostream>
     #include <sstream>
-    #include <stdexcept>
+    #include <exception>
 
     int
     main()
@@ -42,40 +42,26 @@ look if ported to this library.
         try
         {
             // The following date is in ISO 8601 extended format (CCYY-MM-DD)
-            string s("2001-10-9"); // 2001-October-09
-            istringstream in(s);
-            int y, m, day;
-            char dash;
-            in >> y >> dash >> m >> dash >> day;
-            auto d = year(y)/m/day;
+            istringstream in{"2001-10-9"}; // 2001-October-09
+            year_month_day d;
+            in >> parse("%F", d);
             assert(d.ok());
-            cout << d.year() << '-' << d.month() << '-' << d.day() << '\n';
+            cout << format("%Y-%b-%d\n", d);
 
             // Read ISO Standard(CCYYMMDD) and output ISO Extended
-            string ud("20011009"); // 2001-Oct-09
-            auto d1 = year(stoi(ud.substr(0, 4)))/stoi(ud.substr(4, 2))
-                                                 /stoi(ud.substr(6, 2));
-            assert(d1.ok());
-            cout << d1 << '\n';  // 2001-10-09
+            in.str("20011009"); // 2001-Oct-09
+            in >> parse("%Y%m%d", d);
+            assert(d.ok());
+            cout << d << '\n';  // 2001-10-09
 
             // Output the parts of the date - Tuesday October 9, 2001
-            auto wd = weekday{d1};
-            cout << wd << ' ' << d1.month() << ' '
-                 << static_cast<unsigned>(d1.day())
-                 << ", " << d1.year() << '\n'; // Tue Oct 9, 2001
+            cout << format("%A %B %e, %Y\n", d);
 
             // Let's send in month 25 by accident and create an exception
-            string bad_date("20012509"); // 2001-??-09
+            in.str("20012509"); // 2001-??-09
+            in.exceptions(std::ios::failbit);
             cout << "An expected exception is next:\n";
-            auto d2 = year(stoi(bad_date.substr(0, 4)))
-                          /stoi(bad_date.substr(4, 2))
-                          /stoi(bad_date.substr(6, 2));
-            if (!d2.ok())
-            {
-                ostringstream msg;
-                msg << "Invalid date: " << d2;
-                throw runtime_error(msg.str());
-            }
+            in >> parse("%Y%m%d", d);
             cout << "oh oh, you shouldn't reach this line:\n";
         }
         catch (const exception& e)