From 57a9fcc9bc7c9d1e34c80b9bd57f79bd42a88872 Mon Sep 17 00:00:00 2001
From: Sandipan Mohanty <s.mohanty@fz-juelich.de>
Date: Sun, 12 May 2024 16:11:21 +0200
Subject: [PATCH] Move a few examples in and out of chapter 1
---
chapter_01/examples/consteval.cc | 23 +++++++++++++++++++
chapter_01/examples/iotaloop.cc | 12 ++++++++++
chapter_01/examples/iotaloop2.cc | 16 +++++++++++++
chapter_01/solutions/iotaloop3.cc | 16 +++++++++++++
.../examples/numsort.cc | 0
.../examples/sharedptr.cc | 0
.../examples/uniqueptr.cc | 0
7 files changed, 67 insertions(+)
create mode 100644 chapter_01/examples/consteval.cc
create mode 100644 chapter_01/examples/iotaloop.cc
create mode 100644 chapter_01/examples/iotaloop2.cc
create mode 100644 chapter_01/solutions/iotaloop3.cc
rename {chapter_01 => chapter_06}/examples/numsort.cc (100%)
rename {chapter_01 => chapter_06}/examples/sharedptr.cc (100%)
rename {chapter_01 => chapter_06}/examples/uniqueptr.cc (100%)
diff --git a/chapter_01/examples/consteval.cc b/chapter_01/examples/consteval.cc
new file mode 100644
index 0000000..d473db7
--- /dev/null
+++ b/chapter_01/examples/consteval.cc
@@ -0,0 +1,23 @@
+#include <algorithm>
+#include <ranges>
+namespace sr = std::ranges;
+namespace sv = sr::views;
+
+consteval auto is_prime(unsigned N) -> bool
+{
+ return sr::none_of(
+ sv::iota(2U)
+ | sv::take_while([=](auto i) { return i * i <= N; }),
+ [=](auto i){ return N % i == 0; });
+}
+
+auto main() -> int
+{
+ return (sr::fold_left(
+ sv::iota(2U)
+ | sv::filter([](unsigned i) { return is_prime(i); })
+ | sv::take(10U),
+ 0UL,
+ std::plus<unsigned long>{}));
+}
+
diff --git a/chapter_01/examples/iotaloop.cc b/chapter_01/examples/iotaloop.cc
new file mode 100644
index 0000000..b3535e3
--- /dev/null
+++ b/chapter_01/examples/iotaloop.cc
@@ -0,0 +1,12 @@
+#include <print>
+#include <ranges>
+
+namespace sr = std::ranges;
+namespace sv = sr::views;
+
+auto main() -> int
+{
+ for (auto i : sv::iota(10, 15)) std::print("{}\n", i);
+}
+
+
diff --git a/chapter_01/examples/iotaloop2.cc b/chapter_01/examples/iotaloop2.cc
new file mode 100644
index 0000000..4545a87
--- /dev/null
+++ b/chapter_01/examples/iotaloop2.cc
@@ -0,0 +1,16 @@
+#include <print>
+#include <ranges>
+
+namespace sr = std::ranges;
+namespace sv = sr::views;
+auto divisible_by_4(int i) -> bool
+{
+ return i % 4 == 0;
+}
+auto main() -> int
+{
+ for (auto i : sv::iota(1, 500) | sv::filter(divisible_by_4))
+ std::print("{}\n", i);
+}
+
+
diff --git a/chapter_01/solutions/iotaloop3.cc b/chapter_01/solutions/iotaloop3.cc
new file mode 100644
index 0000000..8452723
--- /dev/null
+++ b/chapter_01/solutions/iotaloop3.cc
@@ -0,0 +1,16 @@
+#include <print>
+#include <ranges>
+
+namespace sr = std::ranges;
+namespace sv = sr::views;
+auto my_selection(int i) -> bool
+{
+ return (i - 10) % 7 == 0;
+}
+auto main() -> int
+{
+ for (auto i : sv::iota(-50, 50) | sv::filter(my_selection))
+ std::print("{}\n", i);
+}
+
+
diff --git a/chapter_01/examples/numsort.cc b/chapter_06/examples/numsort.cc
similarity index 100%
rename from chapter_01/examples/numsort.cc
rename to chapter_06/examples/numsort.cc
diff --git a/chapter_01/examples/sharedptr.cc b/chapter_06/examples/sharedptr.cc
similarity index 100%
rename from chapter_01/examples/sharedptr.cc
rename to chapter_06/examples/sharedptr.cc
diff --git a/chapter_01/examples/uniqueptr.cc b/chapter_06/examples/uniqueptr.cc
similarity index 100%
rename from chapter_01/examples/uniqueptr.cc
rename to chapter_06/examples/uniqueptr.cc
--
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