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Add xtd::collections::generic::stack example
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‎examples/xtd.core.examples/README.md‎

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* [generic_list_reverse](generic_Collections/generic_list_reverse/README.md) shows how to use [xtd::collections::generic::list::reverse](https://gammasoft71.github.io/xtd/reference_guides/latest/classxtd_1_1collections_1_1generic_1_1list.html) method.
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* [generic_ordered_dictionary](generic_Collections/generic_ordered_dictionary/README.md) shows how to use [xtd::collections::generic::ordered_dictionary](https://gammasoft71.github.io/xtd/reference_guides/latest/classxtd_1_1collections_1_1generic_1_1ordered__dictionary.html) clss.
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* [generic_queue](generic_Collections/generic_queue/README.md) shows how to use [xtd::collections::generic::queue](https://gammasoft71.github.io/xtd/reference_guides/latest/classxtd_1_1collections_1_1generic_1_1queue.html) clss.
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* [generic_stack](generic_Collections/generic_stack/README.md) shows how to use [xtd::collections::generic::stack](https://gammasoft71.github.io/xtd/reference_guides/latest/classxtd_1_1collections_1_1generic_1_1stack.html) clss.
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* [mix_generic_list_and_std_vector_api](generic_Collections/mix_generic_list_and_std_vector_api/README.md) shows how to use [xtd::collections::generic::list](https://gammasoft71.github.io/xtd/reference_guides/latest/classxtd_1_1collections_1_1generic_1_1list.html) class.
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## [globalization](globalization/README.md)

‎examples/xtd.core.examples/generic_collections/CMakeLists.txt‎

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generic_list_reverse
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generic_ordered_dictionary
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generic_queue
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generic_stack
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mix_generic_list_and_std_vector_api
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)

‎examples/xtd.core.examples/generic_collections/README.md‎

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* [generic_list_reverse](generic_list_reverse/README.md) shows how to use [xtd::collections::generic::list::reverse](https://gammasoft71.github.io/xtd/reference_guides/latest/classxtd_1_1collections_1_1generic_1_1list.html) method.
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* [generic_ordered_dictionary](generic_ordered_dictionary/README.md) shows how to use [xtd::collections::generic::ordered_dictionary](https://gammasoft71.github.io/xtd/reference_guides/latest/classxtd_1_1collections_1_1generic_1_1ordered__dictionary.html) clss.
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* [generic_queue](generic_queue/README.md) shows how to use [xtd::collections::generic::queue](https://gammasoft71.github.io/xtd/reference_guides/latest/classxtd_1_1collections_1_1generic_1_1queue.html) clss.
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* [generic_stack](generic_stack/README.md) shows how to use [xtd::collections::generic::stack](https://gammasoft71.github.io/xtd/reference_guides/latest/classxtd_1_1collections_1_1generic_1_1stack.html) clss.
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* [mix_generic_list_and_std_vector_api](mix_generic_list_and_std_vector_api/README.md) shows how to use [xtd::collections::generic::list](https://gammasoft71.github.io/xtd/reference_guides/latest/classxtd_1_1collections_1_1generic_1_1list.html) class.
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## Build and run any project

‎examples/xtd.core.examples/generic_collections/generic_stack/CMakeLists.txt‎

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cmake_minimum_required(VERSION 3.20)
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project(generic_stack)
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find_package(xtd REQUIRED)
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add_sources(README.md src/generic_stack.cpp)
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target_type(CONSOLE_APPLICATION)

‎examples/xtd.core.examples/generic_collections/generic_stack/README.md‎

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# generic_stack
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Shows how to use [xtd::collections::generic::stack](https://gammasoft71.github.io/xtd/reference_guides/latest/classxtd_1_1collections_1_1generic_1_1stack.html) class.
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## Sources
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* [src/generic_stack.cpp](src/generic_stack.cpp)
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* [CMakeLists.txt](CMakeLists.txt)
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## Build and run
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Open "Command Prompt" or "Terminal". Navigate to the folder that contains the project and type the following:
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```cmake
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xtdc run
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```
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## Output
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```
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five
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four
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three
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two
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one
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Popping 'five'
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Peek at next item to destack: four
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Popping 'four'
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Contents of the first copy:
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one
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two
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three
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Contents of the second copy, with duplicates and nulls:
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one
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two
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three
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stack2.contains("four") = false
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stack2.clear()
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stack2.count() = 0
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```

‎examples/xtd.core.examples/generic_collections/generic_stack/src/generic_stack.cpp‎

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#include <xtd/xtd>
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namespace examples {
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class program {
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public:
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static auto main() -> void {
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auto numbers = stack<string> {};
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numbers.push("one");
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numbers.push("two");
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numbers.push("three");
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numbers.push("four");
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numbers.push("five");
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// A stack can be enumerated without disturbing its contents.
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for (auto number : numbers)
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console::write_line(number);
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console::write_line("\nPopping '{}'", numbers.pop());
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console::write_line("Peek at next item to destack: {}", numbers.peek());
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console::write_line("Popping '{}'", numbers.pop());
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// Create a copy of the stack, using the to_array method and the constructor that accepts an ienumerable<type_t>.
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auto stack2 = stack<string>(numbers.to_array());
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console::write_line("\nContents of the first copy:");
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for (auto number : stack2 )
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console::write_line(number);
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// Create an array twice the size of the stack and copy the elements of the stack, starting at the middle of the array.
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auto array2 = array<string>(numbers.count() * 2);
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numbers.copy_to(array2, numbers.count());
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// Create a second stack, using the constructor that accepts an ienumerable<type_t>.
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auto stack3 = stack<string>(array2);
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console::write_line("\nContents of the second copy, with duplicates and nulls:");
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for (auto number : stack3 )
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console::write_line(number);
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console::write_line("\nstack2.contains(\"four\") = {0}", stack2.contains("four"));
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console::write_line("\nstack2.clear()");
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stack2.clear();
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console::write_line("\nstack2.count() = {0}", stack2.count());
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}
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};
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}
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startup_(examples::program::main);
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// This code can produce the following output :
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//
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// five
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// four
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// three
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// two
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// one
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//
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// Popping 'five'
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// Peek at next item to destack: four
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// Popping 'four'
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//
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// Contents of the first copy:
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// one
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// two
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// three
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//
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// Contents of the second copy, with duplicates and nulls:
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// one
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// two
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// three
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//
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//
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//
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//
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// stack2.contains("four") = false
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//
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// stack2.clear()
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//
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// stack2.count() = 0

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