Merge pull request #25 from gjbex/development

Development

source-code/Boost/ProgramOptions/random_default.cpp

@@ -9,10 +9,7 @@ using Options = std::tuple<int, double, double, size_t>;
 Options get_options(int argc, char* argv[]);
 
 int main(int argc, char* argv[]) {
-    int n;
-    double a, b;
-    size_t seed;
-    std::tie(n, a, b, seed) = get_options(argc, argv);
+    auto [n, a, b, seed] = get_options(argc, argv);
 
     std::mt19937 engine(seed);
     std::uniform_real_distribution<double> distr(a, b);

source-code/UserDefinedTypes/ObjectLifeCycle/CMakeLists.txt

@@ -0,0 +1,11 @@
+cmake_minimum_required(VERSION 3.20)
+
+project(object_life_cycle LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+add_executable(gadget.exe gadget.cpp)
+
+add_executable(emplace.exe emplace.cpp)

source-code/UserDefinedTypes/ObjectLifeCycle/README.md

@@ -7,4 +7,4 @@ copy constructors, copy assignment, and copy elision.
   1. `gadget.cpp`: driver function to illustrate the various life cycle
     scenarios of an object.
   1. `emplace.cpp`: example of using emplace for vectors.
-  1. `Makefile`: make file to build the application.
+  1. `CMakeLists.txt`: CMake file to build the application.

source-code/UserDefinedTypes/ObjectLifeCycle/emplace.cpp

@@ -4,7 +4,9 @@
 struct S {
     S() { puts("S()"); }
     S(const S&) { puts("S(&)"); }
+    S& operator=(const S&) { puts("S=&"); return *this; }
     S(S&&) { puts("S(&&)"); }
+    S& operator=(S&&) { puts("S=&&"); return *this; }
     ~S() { puts("~S()"); }
 };