commit 8011db5e0ca6f3309372cebdc0a4640ace2e9c6b
Author: Ramón Caballero <hello@ramoncaballero.dev>
Date:   Mon Feb 8 12:25:59 2021 +0000

    Demo std::reverse_copy

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..3f9762c
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,5 @@
+all:
+	$(CXX) reverse_copy.cpp -std=c++11 -o reverse_copy
+	
+clean:
+	rm -r reverse_copy
diff --git a/reverse_copy.cpp b/reverse_copy.cpp
new file mode 100644
index 0000000..9e330a9
--- /dev/null
+++ b/reverse_copy.cpp
@@ -0,0 +1,60 @@
+#include <vector>    // std::vector
+#include <algorithm> // std::reverse_copy
+#include <iostream>  // std::cout, std::end 
+#include <cstdlib>   // EXIT_SUCCESS
+
+//
+// Quick demo of std::reverse_copy
+//
+// https://www.cplusplus.com/reference/algorithm/reverse_copy/
+// Copies the elements in the range [first,last) to the range beginning at result, but in reverse order.
+//
+
+//
+// We need a simple class so we can store a few of them in a vector, then we'll reverse copy onto another vector.  
+//
+
+class Batman {
+public:
+	Batman(int batarangs);
+	int howManyBatarangs() const;
+private:
+	int batarangs = 0;
+};
+
+Batman::Batman(int batarangs): batarangs(batarangs) {
+}
+
+int Batman::howManyBatarangs() const {
+	return this->batarangs;
+}
+
+//
+
+int main(int argc, char **argv) {
+	
+	// Create some pointers to the simple class:
+	Batman* b0 = new Batman(0);
+	Batman* b1 = new Batman(1);
+	Batman* b2 = new Batman(2);
+	Batman* b3 = new Batman(3);
+	
+	// Store those pointers in a vector:
+	std::vector<Batman*> a = { b0, b1, b2, b3 };
+	
+	// Way 1: if for some reason the destination vector is already created and we don't have access (or don't want) to modify its declaration...
+	std::vector<Batman*> b;
+	b.resize(a.size());               // ...then we need to resize it to the same size of the original vector. 
+	
+	// Way 2: if we can create the destination vector...
+	//	std::vector<Batman*> b(a.size()); // ...we can just create it with the same size of the original vector.
+	
+	//
+	std::reverse_copy(a.begin(), a.end(), b.begin());
+	
+	// Output the elements of each vector:
+	for (auto x: a) std::cout << x->howManyBatarangs() << std::endl;
+	for (auto x: b) std::cout << x->howManyBatarangs() << std::endl;
+	
+	return EXIT_SUCCESS;
+}