50 lines
1.9 KiB
C++
50 lines
1.9 KiB
C++
// fig07_06.cpp
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// C++20: Creating std::arrays with to_array.
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#include <fmt/format.h>
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#include <iostream>
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#include <array>
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int main() {
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// generic lambda to display a collection of items
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const auto display{
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[](const auto& items) {
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for (const auto& item : items) {
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std::cout << fmt::format("{} ", item);
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}
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}
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};
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const int values1[]{10, 20, 30};
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// creating a std::array from a built-in array
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const auto array1{std::to_array(values1)};
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std::cout << fmt::format("array1.size() = {}\n", array1.size())
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<< "array1: ";
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display(array1); // use lambda to display contents
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// creating a std::array from an initializer list
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const auto array2{std::to_array({1, 2, 3, 4})};
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std::cout << fmt::format("\n\narray2.size() = {}\n", array2.size())
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<< "array2: ";
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display(array2); // use lambda to display contents
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std::cout << '\n';
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}
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/**************************************************************************
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* (C) Copyright 1992-2022 by Deitel & Associates, Inc. and *
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* Pearson Education, Inc. All Rights Reserved. *
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* *
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* DISCLAIMER: The authors and publisher of this book have used their *
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* best efforts in preparing the book. These efforts include the *
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* development, research, and testing of the theories and programs *
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* to determine their effectiveness. The authors and publisher make *
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* no warranty of any kind, expressed or implied, with regard to these *
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* programs or to the documentation contained in these books. The authors *
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* and publisher shall not be liable in any event for incidental or *
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* consequential damages in connection with, or arising out of, the *
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* furnishing, performance, or use of these programs. *
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**************************************************************************/
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