From aa0c4781377d6d00ebe14d59692c4d4b1a1ae335 Mon Sep 17 00:00:00 2001
From: Sandipan Mohanty <s.mohanty@fz-juelich.de>
Date: Mon, 22 May 2023 12:21:42 +0200
Subject: [PATCH] Collect examples for chapter 6
---
{day4 => chapter_06}/examples/CMakeLists.txt | 0
chapter_06/examples/K.cc | 37 +++++++++++++++++++
{day4 => chapter_06}/examples/advent.cc | 0
{day4 => chapter_06}/examples/any_demo.cc | 0
.../examples/cards_problem.cc | 0
{day4 => chapter_06}/examples/chrono_demo.cc | 0
.../examples}/dangling0.cc | 0
.../examples}/dangling1.cc | 0
{day5 => chapter_06}/examples/dist.cc | 0
{day4 => chapter_06}/examples/feb.cc | 0
{day5 => chapter_06}/examples/format1.cc | 0
.../ranges => chapter_06/examples}/gerund.cc | 0
.../ranges => chapter_06/examples}/iota.cc | 0
.../examples/normal_distribution.cc | 0
{day4 => chapter_06}/examples/opt_qsolve.cc | 0
{day4 => chapter_06}/examples/pass1.cc | 0
{day4 => chapter_06}/examples/poisson.cc | 0
.../polymorphic/1_virtual/CMakeLists.txt | 0
.../examples/polymorphic/1_virtual/Circle.cc | 0
.../examples/polymorphic/1_virtual/Circle.hh | 0
.../examples/polymorphic/1_virtual/Point.cc | 0
.../examples/polymorphic/1_virtual/Point.hh | 0
.../examples/polymorphic/1_virtual/Polygon.hh | 0
.../examples/polymorphic/1_virtual/Shape.hh | 0
.../polymorphic/1_virtual/Triangle.cc | 0
.../polymorphic/1_virtual/Triangle.hh | 0
.../examples/polymorphic/1_virtual/main.cc | 0
.../examples/polymorphic/2_any/CMakeLists.txt | 0
.../examples/polymorphic/2_any/Circle.cc | 0
.../examples/polymorphic/2_any/Circle.hh | 0
.../examples/polymorphic/2_any/Point.cc | 0
.../examples/polymorphic/2_any/Point.hh | 0
.../examples/polymorphic/2_any/Polygon.hh | 0
.../examples/polymorphic/2_any/Triangle.cc | 0
.../examples/polymorphic/2_any/Triangle.hh | 0
.../examples/polymorphic/2_any/main.cc | 0
.../polymorphic/3_variant/CMakeLists.txt | 0
.../examples/polymorphic/3_variant/Circle.cc | 0
.../examples/polymorphic/3_variant/Circle.hh | 0
.../examples/polymorphic/3_variant/Point.cc | 0
.../examples/polymorphic/3_variant/Point.hh | 0
.../examples/polymorphic/3_variant/Polygon.hh | 0
.../polymorphic/3_variant/Triangle.cc | 0
.../polymorphic/3_variant/Triangle.hh | 0
.../examples/polymorphic/3_variant/main.cc | 0
.../polymorphic/4_type_erasure/CMakeLists.txt | 0
.../polymorphic/4_type_erasure/Circle.cc | 0
.../polymorphic/4_type_erasure/Circle.hh | 0
.../polymorphic/4_type_erasure/Point.cc | 0
.../polymorphic/4_type_erasure/Point.hh | 0
.../polymorphic/4_type_erasure/Polygon.hh | 0
.../polymorphic/4_type_erasure/Triangle.cc | 0
.../polymorphic/4_type_erasure/Triangle.hh | 0
.../polymorphic/4_type_erasure/main.cc | 0
{day4 => chapter_06}/examples/seqops.cc | 0
.../examples}/seqops_range.cc | 0
{day5 => chapter_06}/examples/spans/main.cc | 0
.../examples/spans/spanfunc.cc | 0
.../examples/spans/spanfunc.hh | 0
{day4 => chapter_06}/examples/test.dat | 0
.../examples}/trig_views.cc | 0
.../examples}/trig_views2.cc | 0
{day4 => chapter_06}/examples/variant_0.cc | 0
{day4 => chapter_06}/examples/variant_1.cc | 0
{day4 => chapter_06}/examples/variant_2.cc | 0
{day4 => chapter_06}/examples/variant_3.cc | 0
{day4 => chapter_06}/examples/variant_4.cc | 0
.../examples}/views_and_span.cc | 0
{day4 => chapter_06}/examples/weighted_die.cc | 0
{day4 => chapter_06}/examples/word_count.cc | 0
.../examples/word_count_fmt.cc | 0
{day4/examples => chapter_06/solutions}/K.cc | 0
chapter_06/solutions/normal_distribution.cc | 30 +++++++++++++++
chapter_06/solutions/weighted_die.cc | 15 ++++++++
74 files changed, 82 insertions(+)
rename {day4 => chapter_06}/examples/CMakeLists.txt (100%)
create mode 100644 chapter_06/examples/K.cc
rename {day4 => chapter_06}/examples/advent.cc (100%)
rename {day4 => chapter_06}/examples/any_demo.cc (100%)
rename {day4 => chapter_06}/examples/cards_problem.cc (100%)
rename {day4 => chapter_06}/examples/chrono_demo.cc (100%)
rename {day5/examples/ranges => chapter_06/examples}/dangling0.cc (100%)
rename {day5/examples/ranges => chapter_06/examples}/dangling1.cc (100%)
rename {day5 => chapter_06}/examples/dist.cc (100%)
rename {day4 => chapter_06}/examples/feb.cc (100%)
rename {day5 => chapter_06}/examples/format1.cc (100%)
rename {day5/examples/ranges => chapter_06/examples}/gerund.cc (100%)
rename {day5/examples/ranges => chapter_06/examples}/iota.cc (100%)
rename {day4 => chapter_06}/examples/normal_distribution.cc (100%)
rename {day4 => chapter_06}/examples/opt_qsolve.cc (100%)
rename {day4 => chapter_06}/examples/pass1.cc (100%)
rename {day4 => chapter_06}/examples/poisson.cc (100%)
rename {day5 => chapter_06}/examples/polymorphic/1_virtual/CMakeLists.txt (100%)
rename {day5 => chapter_06}/examples/polymorphic/1_virtual/Circle.cc (100%)
rename {day5 => chapter_06}/examples/polymorphic/1_virtual/Circle.hh (100%)
rename {day5 => chapter_06}/examples/polymorphic/1_virtual/Point.cc (100%)
rename {day5 => chapter_06}/examples/polymorphic/1_virtual/Point.hh (100%)
rename {day5 => chapter_06}/examples/polymorphic/1_virtual/Polygon.hh (100%)
rename {day5 => chapter_06}/examples/polymorphic/1_virtual/Shape.hh (100%)
rename {day5 => chapter_06}/examples/polymorphic/1_virtual/Triangle.cc (100%)
rename {day5 => chapter_06}/examples/polymorphic/1_virtual/Triangle.hh (100%)
rename {day5 => chapter_06}/examples/polymorphic/1_virtual/main.cc (100%)
rename {day5 => chapter_06}/examples/polymorphic/2_any/CMakeLists.txt (100%)
rename {day5 => chapter_06}/examples/polymorphic/2_any/Circle.cc (100%)
rename {day5 => chapter_06}/examples/polymorphic/2_any/Circle.hh (100%)
rename {day5 => chapter_06}/examples/polymorphic/2_any/Point.cc (100%)
rename {day5 => chapter_06}/examples/polymorphic/2_any/Point.hh (100%)
rename {day5 => chapter_06}/examples/polymorphic/2_any/Polygon.hh (100%)
rename {day5 => chapter_06}/examples/polymorphic/2_any/Triangle.cc (100%)
rename {day5 => chapter_06}/examples/polymorphic/2_any/Triangle.hh (100%)
rename {day5 => chapter_06}/examples/polymorphic/2_any/main.cc (100%)
rename {day5 => chapter_06}/examples/polymorphic/3_variant/CMakeLists.txt (100%)
rename {day5 => chapter_06}/examples/polymorphic/3_variant/Circle.cc (100%)
rename {day5 => chapter_06}/examples/polymorphic/3_variant/Circle.hh (100%)
rename {day5 => chapter_06}/examples/polymorphic/3_variant/Point.cc (100%)
rename {day5 => chapter_06}/examples/polymorphic/3_variant/Point.hh (100%)
rename {day5 => chapter_06}/examples/polymorphic/3_variant/Polygon.hh (100%)
rename {day5 => chapter_06}/examples/polymorphic/3_variant/Triangle.cc (100%)
rename {day5 => chapter_06}/examples/polymorphic/3_variant/Triangle.hh (100%)
rename {day5 => chapter_06}/examples/polymorphic/3_variant/main.cc (100%)
rename {day5 => chapter_06}/examples/polymorphic/4_type_erasure/CMakeLists.txt (100%)
rename {day5 => chapter_06}/examples/polymorphic/4_type_erasure/Circle.cc (100%)
rename {day5 => chapter_06}/examples/polymorphic/4_type_erasure/Circle.hh (100%)
rename {day5 => chapter_06}/examples/polymorphic/4_type_erasure/Point.cc (100%)
rename {day5 => chapter_06}/examples/polymorphic/4_type_erasure/Point.hh (100%)
rename {day5 => chapter_06}/examples/polymorphic/4_type_erasure/Polygon.hh (100%)
rename {day5 => chapter_06}/examples/polymorphic/4_type_erasure/Triangle.cc (100%)
rename {day5 => chapter_06}/examples/polymorphic/4_type_erasure/Triangle.hh (100%)
rename {day5 => chapter_06}/examples/polymorphic/4_type_erasure/main.cc (100%)
rename {day4 => chapter_06}/examples/seqops.cc (100%)
rename {day5/examples/ranges => chapter_06/examples}/seqops_range.cc (100%)
rename {day5 => chapter_06}/examples/spans/main.cc (100%)
rename {day5 => chapter_06}/examples/spans/spanfunc.cc (100%)
rename {day5 => chapter_06}/examples/spans/spanfunc.hh (100%)
rename {day4 => chapter_06}/examples/test.dat (100%)
rename {day5/examples/ranges => chapter_06/examples}/trig_views.cc (100%)
rename {day5/examples/ranges => chapter_06/examples}/trig_views2.cc (100%)
rename {day4 => chapter_06}/examples/variant_0.cc (100%)
rename {day4 => chapter_06}/examples/variant_1.cc (100%)
rename {day4 => chapter_06}/examples/variant_2.cc (100%)
rename {day4 => chapter_06}/examples/variant_3.cc (100%)
rename {day4 => chapter_06}/examples/variant_4.cc (100%)
rename {day5/examples/ranges => chapter_06/examples}/views_and_span.cc (100%)
rename {day4 => chapter_06}/examples/weighted_die.cc (100%)
rename {day4 => chapter_06}/examples/word_count.cc (100%)
rename day5/examples/word_count.cc => chapter_06/examples/word_count_fmt.cc (100%)
rename {day4/examples => chapter_06/solutions}/K.cc (100%)
create mode 100644 chapter_06/solutions/normal_distribution.cc
create mode 100644 chapter_06/solutions/weighted_die.cc
diff --git a/day4/examples/CMakeLists.txt b/chapter_06/examples/CMakeLists.txt
similarity index 100%
rename from day4/examples/CMakeLists.txt
rename to chapter_06/examples/CMakeLists.txt
diff --git a/chapter_06/examples/K.cc b/chapter_06/examples/K.cc
new file mode 100644
index 0000000..9eeec5c
--- /dev/null
+++ b/chapter_06/examples/K.cc
@@ -0,0 +1,37 @@
+#include <functional>
+#include <iostream>
+#include <random>
+#include <vector>
+
+inline auto power(double x, unsigned N) -> double
+{
+ double ans = 1;
+ for (unsigned u = 0; u < N; ++u)
+ ans *= x;
+ return ans;
+}
+auto main() -> int
+{
+ std::vector d(1000000, 0.);
+ double mu{ 1.0 };
+ double sigma{ 35.8 };
+
+ // Fill d with random numbers distributed as a normal
+ // distribution with mu and sigma as given above.
+
+ for (auto & el : d) el = gen();
+ // ///////
+
+ double mn = 0;
+ for (auto r : d)
+ mn += r;
+ mn /= d.size();
+ double kn = 0;
+ for (auto r : d)
+ kn += power(r - mn, 4);
+ double kd = 0;
+ for (auto r : d)
+ kd += power(r - mn, 2);
+ std::cout << d.size() * kn / (kd * kd) << "\n";
+}
+
diff --git a/day4/examples/advent.cc b/chapter_06/examples/advent.cc
similarity index 100%
rename from day4/examples/advent.cc
rename to chapter_06/examples/advent.cc
diff --git a/day4/examples/any_demo.cc b/chapter_06/examples/any_demo.cc
similarity index 100%
rename from day4/examples/any_demo.cc
rename to chapter_06/examples/any_demo.cc
diff --git a/day4/examples/cards_problem.cc b/chapter_06/examples/cards_problem.cc
similarity index 100%
rename from day4/examples/cards_problem.cc
rename to chapter_06/examples/cards_problem.cc
diff --git a/day4/examples/chrono_demo.cc b/chapter_06/examples/chrono_demo.cc
similarity index 100%
rename from day4/examples/chrono_demo.cc
rename to chapter_06/examples/chrono_demo.cc
diff --git a/day5/examples/ranges/dangling0.cc b/chapter_06/examples/dangling0.cc
similarity index 100%
rename from day5/examples/ranges/dangling0.cc
rename to chapter_06/examples/dangling0.cc
diff --git a/day5/examples/ranges/dangling1.cc b/chapter_06/examples/dangling1.cc
similarity index 100%
rename from day5/examples/ranges/dangling1.cc
rename to chapter_06/examples/dangling1.cc
diff --git a/day5/examples/dist.cc b/chapter_06/examples/dist.cc
similarity index 100%
rename from day5/examples/dist.cc
rename to chapter_06/examples/dist.cc
diff --git a/day4/examples/feb.cc b/chapter_06/examples/feb.cc
similarity index 100%
rename from day4/examples/feb.cc
rename to chapter_06/examples/feb.cc
diff --git a/day5/examples/format1.cc b/chapter_06/examples/format1.cc
similarity index 100%
rename from day5/examples/format1.cc
rename to chapter_06/examples/format1.cc
diff --git a/day5/examples/ranges/gerund.cc b/chapter_06/examples/gerund.cc
similarity index 100%
rename from day5/examples/ranges/gerund.cc
rename to chapter_06/examples/gerund.cc
diff --git a/day5/examples/ranges/iota.cc b/chapter_06/examples/iota.cc
similarity index 100%
rename from day5/examples/ranges/iota.cc
rename to chapter_06/examples/iota.cc
diff --git a/day4/examples/normal_distribution.cc b/chapter_06/examples/normal_distribution.cc
similarity index 100%
rename from day4/examples/normal_distribution.cc
rename to chapter_06/examples/normal_distribution.cc
diff --git a/day4/examples/opt_qsolve.cc b/chapter_06/examples/opt_qsolve.cc
similarity index 100%
rename from day4/examples/opt_qsolve.cc
rename to chapter_06/examples/opt_qsolve.cc
diff --git a/day4/examples/pass1.cc b/chapter_06/examples/pass1.cc
similarity index 100%
rename from day4/examples/pass1.cc
rename to chapter_06/examples/pass1.cc
diff --git a/day4/examples/poisson.cc b/chapter_06/examples/poisson.cc
similarity index 100%
rename from day4/examples/poisson.cc
rename to chapter_06/examples/poisson.cc
diff --git a/day5/examples/polymorphic/1_virtual/CMakeLists.txt b/chapter_06/examples/polymorphic/1_virtual/CMakeLists.txt
similarity index 100%
rename from day5/examples/polymorphic/1_virtual/CMakeLists.txt
rename to chapter_06/examples/polymorphic/1_virtual/CMakeLists.txt
diff --git a/day5/examples/polymorphic/1_virtual/Circle.cc b/chapter_06/examples/polymorphic/1_virtual/Circle.cc
similarity index 100%
rename from day5/examples/polymorphic/1_virtual/Circle.cc
rename to chapter_06/examples/polymorphic/1_virtual/Circle.cc
diff --git a/day5/examples/polymorphic/1_virtual/Circle.hh b/chapter_06/examples/polymorphic/1_virtual/Circle.hh
similarity index 100%
rename from day5/examples/polymorphic/1_virtual/Circle.hh
rename to chapter_06/examples/polymorphic/1_virtual/Circle.hh
diff --git a/day5/examples/polymorphic/1_virtual/Point.cc b/chapter_06/examples/polymorphic/1_virtual/Point.cc
similarity index 100%
rename from day5/examples/polymorphic/1_virtual/Point.cc
rename to chapter_06/examples/polymorphic/1_virtual/Point.cc
diff --git a/day5/examples/polymorphic/1_virtual/Point.hh b/chapter_06/examples/polymorphic/1_virtual/Point.hh
similarity index 100%
rename from day5/examples/polymorphic/1_virtual/Point.hh
rename to chapter_06/examples/polymorphic/1_virtual/Point.hh
diff --git a/day5/examples/polymorphic/1_virtual/Polygon.hh b/chapter_06/examples/polymorphic/1_virtual/Polygon.hh
similarity index 100%
rename from day5/examples/polymorphic/1_virtual/Polygon.hh
rename to chapter_06/examples/polymorphic/1_virtual/Polygon.hh
diff --git a/day5/examples/polymorphic/1_virtual/Shape.hh b/chapter_06/examples/polymorphic/1_virtual/Shape.hh
similarity index 100%
rename from day5/examples/polymorphic/1_virtual/Shape.hh
rename to chapter_06/examples/polymorphic/1_virtual/Shape.hh
diff --git a/day5/examples/polymorphic/1_virtual/Triangle.cc b/chapter_06/examples/polymorphic/1_virtual/Triangle.cc
similarity index 100%
rename from day5/examples/polymorphic/1_virtual/Triangle.cc
rename to chapter_06/examples/polymorphic/1_virtual/Triangle.cc
diff --git a/day5/examples/polymorphic/1_virtual/Triangle.hh b/chapter_06/examples/polymorphic/1_virtual/Triangle.hh
similarity index 100%
rename from day5/examples/polymorphic/1_virtual/Triangle.hh
rename to chapter_06/examples/polymorphic/1_virtual/Triangle.hh
diff --git a/day5/examples/polymorphic/1_virtual/main.cc b/chapter_06/examples/polymorphic/1_virtual/main.cc
similarity index 100%
rename from day5/examples/polymorphic/1_virtual/main.cc
rename to chapter_06/examples/polymorphic/1_virtual/main.cc
diff --git a/day5/examples/polymorphic/2_any/CMakeLists.txt b/chapter_06/examples/polymorphic/2_any/CMakeLists.txt
similarity index 100%
rename from day5/examples/polymorphic/2_any/CMakeLists.txt
rename to chapter_06/examples/polymorphic/2_any/CMakeLists.txt
diff --git a/day5/examples/polymorphic/2_any/Circle.cc b/chapter_06/examples/polymorphic/2_any/Circle.cc
similarity index 100%
rename from day5/examples/polymorphic/2_any/Circle.cc
rename to chapter_06/examples/polymorphic/2_any/Circle.cc
diff --git a/day5/examples/polymorphic/2_any/Circle.hh b/chapter_06/examples/polymorphic/2_any/Circle.hh
similarity index 100%
rename from day5/examples/polymorphic/2_any/Circle.hh
rename to chapter_06/examples/polymorphic/2_any/Circle.hh
diff --git a/day5/examples/polymorphic/2_any/Point.cc b/chapter_06/examples/polymorphic/2_any/Point.cc
similarity index 100%
rename from day5/examples/polymorphic/2_any/Point.cc
rename to chapter_06/examples/polymorphic/2_any/Point.cc
diff --git a/day5/examples/polymorphic/2_any/Point.hh b/chapter_06/examples/polymorphic/2_any/Point.hh
similarity index 100%
rename from day5/examples/polymorphic/2_any/Point.hh
rename to chapter_06/examples/polymorphic/2_any/Point.hh
diff --git a/day5/examples/polymorphic/2_any/Polygon.hh b/chapter_06/examples/polymorphic/2_any/Polygon.hh
similarity index 100%
rename from day5/examples/polymorphic/2_any/Polygon.hh
rename to chapter_06/examples/polymorphic/2_any/Polygon.hh
diff --git a/day5/examples/polymorphic/2_any/Triangle.cc b/chapter_06/examples/polymorphic/2_any/Triangle.cc
similarity index 100%
rename from day5/examples/polymorphic/2_any/Triangle.cc
rename to chapter_06/examples/polymorphic/2_any/Triangle.cc
diff --git a/day5/examples/polymorphic/2_any/Triangle.hh b/chapter_06/examples/polymorphic/2_any/Triangle.hh
similarity index 100%
rename from day5/examples/polymorphic/2_any/Triangle.hh
rename to chapter_06/examples/polymorphic/2_any/Triangle.hh
diff --git a/day5/examples/polymorphic/2_any/main.cc b/chapter_06/examples/polymorphic/2_any/main.cc
similarity index 100%
rename from day5/examples/polymorphic/2_any/main.cc
rename to chapter_06/examples/polymorphic/2_any/main.cc
diff --git a/day5/examples/polymorphic/3_variant/CMakeLists.txt b/chapter_06/examples/polymorphic/3_variant/CMakeLists.txt
similarity index 100%
rename from day5/examples/polymorphic/3_variant/CMakeLists.txt
rename to chapter_06/examples/polymorphic/3_variant/CMakeLists.txt
diff --git a/day5/examples/polymorphic/3_variant/Circle.cc b/chapter_06/examples/polymorphic/3_variant/Circle.cc
similarity index 100%
rename from day5/examples/polymorphic/3_variant/Circle.cc
rename to chapter_06/examples/polymorphic/3_variant/Circle.cc
diff --git a/day5/examples/polymorphic/3_variant/Circle.hh b/chapter_06/examples/polymorphic/3_variant/Circle.hh
similarity index 100%
rename from day5/examples/polymorphic/3_variant/Circle.hh
rename to chapter_06/examples/polymorphic/3_variant/Circle.hh
diff --git a/day5/examples/polymorphic/3_variant/Point.cc b/chapter_06/examples/polymorphic/3_variant/Point.cc
similarity index 100%
rename from day5/examples/polymorphic/3_variant/Point.cc
rename to chapter_06/examples/polymorphic/3_variant/Point.cc
diff --git a/day5/examples/polymorphic/3_variant/Point.hh b/chapter_06/examples/polymorphic/3_variant/Point.hh
similarity index 100%
rename from day5/examples/polymorphic/3_variant/Point.hh
rename to chapter_06/examples/polymorphic/3_variant/Point.hh
diff --git a/day5/examples/polymorphic/3_variant/Polygon.hh b/chapter_06/examples/polymorphic/3_variant/Polygon.hh
similarity index 100%
rename from day5/examples/polymorphic/3_variant/Polygon.hh
rename to chapter_06/examples/polymorphic/3_variant/Polygon.hh
diff --git a/day5/examples/polymorphic/3_variant/Triangle.cc b/chapter_06/examples/polymorphic/3_variant/Triangle.cc
similarity index 100%
rename from day5/examples/polymorphic/3_variant/Triangle.cc
rename to chapter_06/examples/polymorphic/3_variant/Triangle.cc
diff --git a/day5/examples/polymorphic/3_variant/Triangle.hh b/chapter_06/examples/polymorphic/3_variant/Triangle.hh
similarity index 100%
rename from day5/examples/polymorphic/3_variant/Triangle.hh
rename to chapter_06/examples/polymorphic/3_variant/Triangle.hh
diff --git a/day5/examples/polymorphic/3_variant/main.cc b/chapter_06/examples/polymorphic/3_variant/main.cc
similarity index 100%
rename from day5/examples/polymorphic/3_variant/main.cc
rename to chapter_06/examples/polymorphic/3_variant/main.cc
diff --git a/day5/examples/polymorphic/4_type_erasure/CMakeLists.txt b/chapter_06/examples/polymorphic/4_type_erasure/CMakeLists.txt
similarity index 100%
rename from day5/examples/polymorphic/4_type_erasure/CMakeLists.txt
rename to chapter_06/examples/polymorphic/4_type_erasure/CMakeLists.txt
diff --git a/day5/examples/polymorphic/4_type_erasure/Circle.cc b/chapter_06/examples/polymorphic/4_type_erasure/Circle.cc
similarity index 100%
rename from day5/examples/polymorphic/4_type_erasure/Circle.cc
rename to chapter_06/examples/polymorphic/4_type_erasure/Circle.cc
diff --git a/day5/examples/polymorphic/4_type_erasure/Circle.hh b/chapter_06/examples/polymorphic/4_type_erasure/Circle.hh
similarity index 100%
rename from day5/examples/polymorphic/4_type_erasure/Circle.hh
rename to chapter_06/examples/polymorphic/4_type_erasure/Circle.hh
diff --git a/day5/examples/polymorphic/4_type_erasure/Point.cc b/chapter_06/examples/polymorphic/4_type_erasure/Point.cc
similarity index 100%
rename from day5/examples/polymorphic/4_type_erasure/Point.cc
rename to chapter_06/examples/polymorphic/4_type_erasure/Point.cc
diff --git a/day5/examples/polymorphic/4_type_erasure/Point.hh b/chapter_06/examples/polymorphic/4_type_erasure/Point.hh
similarity index 100%
rename from day5/examples/polymorphic/4_type_erasure/Point.hh
rename to chapter_06/examples/polymorphic/4_type_erasure/Point.hh
diff --git a/day5/examples/polymorphic/4_type_erasure/Polygon.hh b/chapter_06/examples/polymorphic/4_type_erasure/Polygon.hh
similarity index 100%
rename from day5/examples/polymorphic/4_type_erasure/Polygon.hh
rename to chapter_06/examples/polymorphic/4_type_erasure/Polygon.hh
diff --git a/day5/examples/polymorphic/4_type_erasure/Triangle.cc b/chapter_06/examples/polymorphic/4_type_erasure/Triangle.cc
similarity index 100%
rename from day5/examples/polymorphic/4_type_erasure/Triangle.cc
rename to chapter_06/examples/polymorphic/4_type_erasure/Triangle.cc
diff --git a/day5/examples/polymorphic/4_type_erasure/Triangle.hh b/chapter_06/examples/polymorphic/4_type_erasure/Triangle.hh
similarity index 100%
rename from day5/examples/polymorphic/4_type_erasure/Triangle.hh
rename to chapter_06/examples/polymorphic/4_type_erasure/Triangle.hh
diff --git a/day5/examples/polymorphic/4_type_erasure/main.cc b/chapter_06/examples/polymorphic/4_type_erasure/main.cc
similarity index 100%
rename from day5/examples/polymorphic/4_type_erasure/main.cc
rename to chapter_06/examples/polymorphic/4_type_erasure/main.cc
diff --git a/day4/examples/seqops.cc b/chapter_06/examples/seqops.cc
similarity index 100%
rename from day4/examples/seqops.cc
rename to chapter_06/examples/seqops.cc
diff --git a/day5/examples/ranges/seqops_range.cc b/chapter_06/examples/seqops_range.cc
similarity index 100%
rename from day5/examples/ranges/seqops_range.cc
rename to chapter_06/examples/seqops_range.cc
diff --git a/day5/examples/spans/main.cc b/chapter_06/examples/spans/main.cc
similarity index 100%
rename from day5/examples/spans/main.cc
rename to chapter_06/examples/spans/main.cc
diff --git a/day5/examples/spans/spanfunc.cc b/chapter_06/examples/spans/spanfunc.cc
similarity index 100%
rename from day5/examples/spans/spanfunc.cc
rename to chapter_06/examples/spans/spanfunc.cc
diff --git a/day5/examples/spans/spanfunc.hh b/chapter_06/examples/spans/spanfunc.hh
similarity index 100%
rename from day5/examples/spans/spanfunc.hh
rename to chapter_06/examples/spans/spanfunc.hh
diff --git a/day4/examples/test.dat b/chapter_06/examples/test.dat
similarity index 100%
rename from day4/examples/test.dat
rename to chapter_06/examples/test.dat
diff --git a/day5/examples/ranges/trig_views.cc b/chapter_06/examples/trig_views.cc
similarity index 100%
rename from day5/examples/ranges/trig_views.cc
rename to chapter_06/examples/trig_views.cc
diff --git a/day5/examples/ranges/trig_views2.cc b/chapter_06/examples/trig_views2.cc
similarity index 100%
rename from day5/examples/ranges/trig_views2.cc
rename to chapter_06/examples/trig_views2.cc
diff --git a/day4/examples/variant_0.cc b/chapter_06/examples/variant_0.cc
similarity index 100%
rename from day4/examples/variant_0.cc
rename to chapter_06/examples/variant_0.cc
diff --git a/day4/examples/variant_1.cc b/chapter_06/examples/variant_1.cc
similarity index 100%
rename from day4/examples/variant_1.cc
rename to chapter_06/examples/variant_1.cc
diff --git a/day4/examples/variant_2.cc b/chapter_06/examples/variant_2.cc
similarity index 100%
rename from day4/examples/variant_2.cc
rename to chapter_06/examples/variant_2.cc
diff --git a/day4/examples/variant_3.cc b/chapter_06/examples/variant_3.cc
similarity index 100%
rename from day4/examples/variant_3.cc
rename to chapter_06/examples/variant_3.cc
diff --git a/day4/examples/variant_4.cc b/chapter_06/examples/variant_4.cc
similarity index 100%
rename from day4/examples/variant_4.cc
rename to chapter_06/examples/variant_4.cc
diff --git a/day5/examples/ranges/views_and_span.cc b/chapter_06/examples/views_and_span.cc
similarity index 100%
rename from day5/examples/ranges/views_and_span.cc
rename to chapter_06/examples/views_and_span.cc
diff --git a/day4/examples/weighted_die.cc b/chapter_06/examples/weighted_die.cc
similarity index 100%
rename from day4/examples/weighted_die.cc
rename to chapter_06/examples/weighted_die.cc
diff --git a/day4/examples/word_count.cc b/chapter_06/examples/word_count.cc
similarity index 100%
rename from day4/examples/word_count.cc
rename to chapter_06/examples/word_count.cc
diff --git a/day5/examples/word_count.cc b/chapter_06/examples/word_count_fmt.cc
similarity index 100%
rename from day5/examples/word_count.cc
rename to chapter_06/examples/word_count_fmt.cc
diff --git a/day4/examples/K.cc b/chapter_06/solutions/K.cc
similarity index 100%
rename from day4/examples/K.cc
rename to chapter_06/solutions/K.cc
diff --git a/chapter_06/solutions/normal_distribution.cc b/chapter_06/solutions/normal_distribution.cc
new file mode 100644
index 0000000..724bbf1
--- /dev/null
+++ b/chapter_06/solutions/normal_distribution.cc
@@ -0,0 +1,30 @@
+#include <iostream>
+#include <map>
+#include <random>
+
+auto main() -> int
+{
+ double mn{0.}, var{1.};
+ std::cout << "Mean : ";
+ std::cin >> mn;
+ std::cout << "Variance: ";
+ std::cin >> var;
+
+ std::mt19937_64 engine{ std::random_device{}() };
+ // Above: First create an object of the type std::random_device.
+ // random_device objects can be called like functions.
+ // They give you non-deterministic random numbers, but
+ // not necessarily of the best mathematical quality.
+ // We create the object, and immediately call it:
+ // which is why we have the () after the empty initialiser
+ // braces {}. This gives us a random unsigned long
+ // integer, which we then use to seed the Mersenne Twister
+ // engine.
+ std::normal_distribution<> dist{mn, std::sqrt(var) };
+ auto generator = [&]{ return dist(engine); };
+ std::map<int, unsigned> H;
+ for (unsigned i = 0; i < 5000000; ++i)
+ H[static_cast<int>(std::floor(generator()))]++;
+ for (auto& i : H)
+ std::cout << i.first << " " << i.second << "\n";
+}
diff --git a/chapter_06/solutions/weighted_die.cc b/chapter_06/solutions/weighted_die.cc
new file mode 100644
index 0000000..f6980f4
--- /dev/null
+++ b/chapter_06/solutions/weighted_die.cc
@@ -0,0 +1,15 @@
+#include <array>
+#include <iostream>
+#include <random>
+
+auto main() -> int
+{
+ std::array freq{ 0.3, 0.2, 0.2, 0.1, 0.1, 0.1 };
+ std::mt19937_64 engine{ std::random_device{}() };
+ std::discrete_distribution dist{freq.begin(), freq.end()};
+ auto gen = [&]{ return dist(engine); };
+ for (unsigned long i = 0; i < 10'000'000; ++i)
+ freq[gen()]++;
+ for (unsigned f : freq)
+ std::cout << f << std::endl;
+}
--
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