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Add xeus-cpp tutorial notebooks #6

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c2c9028
Add README.md
gRuntolev May 20, 2026
4b4324e
Add tutorial notebooks
gRuntolev May 20, 2026
80d4d44
Merge branch 'master' into master
gRuntolev Jun 2, 2026
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11 changes: 11 additions & 0 deletions xeus-cpp/02_persistence.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -69,6 +69,7 @@
},
{
"cell_type": "code",
"execution_count": 4,
"execution_count": 3,
"id": "d2c38c70-3e92-446a-8c10-1c62edf177e1",
"metadata": {},
Expand All @@ -77,13 +78,22 @@
"name": "stdout",
"output_type": "stream",
"text": [
"Current Value: 2\n"
"Current Value: 1\n"
]
}
],
"source": [
"inc(); //Run this cell multiple times to see persistence in action"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "e4068173-ab1b-44e5-b439-a4063adfaa67",
"metadata": {},
"outputs": [],
"source": []
}
],
"metadata": {
Expand All @@ -97,6 +107,7 @@
"file_extension": ".cpp",
"mimetype": "text/x-c++src",
"name": "C++",
"version": "23"
"nbconvert_exporter": "",
"pygments_lexer": "",
"version": "cxx23"
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1 change: 1 addition & 0 deletions xeus-cpp/06_cpp_oop.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -286,6 +286,7 @@
"file_extension": ".cpp",
"mimetype": "text/x-c++src",
"name": "C++",
"version": "17"
"nbconvert_exporter": "",
"pygments_lexer": "",
"version": "cxx17"
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82 changes: 82 additions & 0 deletions xeus-cpp/07_stl_modern_cpp.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,8 @@
"#include <optional>\n",
"#include <variant>\n",
"#include <functional>\n",
"#include <sstream>\n",
"using namespace std;"
"#include <sstream>"
]
},
Expand Down Expand Up @@ -69,6 +71,21 @@
}
],
"source": [
"vector<int> v = {5, 2, 8, 1, 9, 3, 7, 4, 6};\n",
"\n",
"// Sort and display\n",
"sort(v.begin(), v.end());\n",
"cout << \"Sorted: \";\n",
"for (int x : v) cout << x << \" \";\n",
"cout << endl;\n",
"\n",
"// Accumulate\n",
"int sum = accumulate(v.begin(), v.end(), 0);\n",
"cout << \"Sum: \" << sum << \" Average: \" << (double)sum / v.size() << endl;\n",
"\n",
"// Find\n",
"auto it = find(v.begin(), v.end(), 7);\n",
"cout << \"Found 7 at index: \" << distance(v.begin(), it) << endl;"
"std::vector<int> v = {5, 2, 8, 1, 9, 3, 7, 4, 6};\n",
"\n",
"// Sort and display\n",
Expand Down Expand Up @@ -102,6 +119,11 @@
],
"source": [
"// Transform: square each element\n",
"vector<int> squares(v.size());\n",
"transform(v.begin(), v.end(), squares.begin(), [](int x) { return x * x; });\n",
"cout << \"Squares: \";\n",
"for (int x : squares) cout << x << \" \";\n",
"cout << endl;"
"std::vector<int> squares(v.size());\n",
"std::transform(v.begin(), v.end(), squares.begin(), [](int x) { return x * x; });\n",
"std::cout << \"Squares: \";\n",
Expand Down Expand Up @@ -141,6 +163,16 @@
],
"source": [
"// Word frequency counter\n",
"string text = \"the quick brown fox jumps over the lazy dog\";\n",
"map<string, int> freq;\n",
"\n",
"string word;\n",
"stringstream ss(text);\n",
"while (ss >> word) freq[word]++;\n",
"\n",
"cout << \"Word frequencies (alphabetical):\" << endl;\n",
"for (const auto& [w, cnt] : freq) {\n",
" cout << \" \" << w << \": \" << cnt << endl;\n",
"std::string text = \"the quick brown fox jumps over the lazy dog\";\n",
"std::map<std::string, int> freq;\n",
"\n",
Expand Down Expand Up @@ -171,6 +203,14 @@
],
"source": [
"// Set: unique sorted elements\n",
"vector<int> dupes = {3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5};\n",
"set<int> unique_set(dupes.begin(), dupes.end());\n",
"\n",
"cout << \"Original (\" << dupes.size() << \" elements): \";\n",
"for (int x : dupes) cout << x << \" \";\n",
"cout << \"\\nUnique (\" << unique_set.size() << \" elements): \";\n",
"for (int x : unique_set) cout << x << \" \";\n",
"cout << endl;"
"std::vector<int> dupes = {3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5};\n",
"std::set<int> unique_set(dupes.begin(), dupes.end());\n",
"\n",
Expand Down Expand Up @@ -211,6 +251,17 @@
"auto isAbove = [threshold](int x) { return x > threshold; }; // capture by value\n",
"auto addTo = [&threshold](int x) { return x + threshold; }; // capture by reference\n",
"\n",
"vector<int> nums = {1, 3, 5, 7, 9, 2, 4, 6, 8};\n",
"vector<int> above, shifted;\n",
"\n",
"copy_if(nums.begin(), nums.end(), back_inserter(above), isAbove);\n",
"transform(nums.begin(), nums.end(), back_inserter(shifted), addTo);\n",
"\n",
"cout << \"Above \" << threshold << \": \";\n",
"for (int x : above) cout << x << \" \";\n",
"cout << \"\\nShifted +\" << threshold << \": \";\n",
"for (int x : shifted) cout << x << \" \";\n",
"cout << endl;\n",
"std::vector<int> nums = {1, 3, 5, 7, 9, 2, 4, 6, 8};\n",
"std::vector<int> above, shifted;\n",
"\n",
Expand Down Expand Up @@ -253,6 +304,12 @@
"source": [
"// unique_ptr — single ownership\n",
"{\n",
" auto uptr = make_unique<string>(\"unique owner\");\n",
" cout << \"unique_ptr: \" << *uptr << endl;\n",
" // auto uptr2 = uptr; // ERROR: cannot copy unique_ptr\n",
" auto uptr2 = move(uptr); // Transfer ownership\n",
" cout << \"After move, uptr is \" << (uptr ? \"valid\" : \"null\") << endl;\n",
" cout << \"uptr2: \" << *uptr2 << endl;\n",
" auto uptr = std::make_unique<std::string>(\"unique owner\");\n",
" std::cout << \"unique_ptr: \" << *uptr << std::endl;\n",
" // auto uptr2 = uptr; // ERROR: cannot copy unique_ptr\n",
Expand All @@ -263,6 +320,9 @@
"\n",
"// shared_ptr — shared ownership\n",
"{\n",
" auto sptr1 = make_shared<int>(42);\n",
" auto sptr2 = sptr1; // Both share ownership\n",
" cout << \"shared value: \" << *sptr1 << \" use_count: \" << sptr1.use_count() << endl;\n",
" auto sptr1 = std::make_shared<int>(42);\n",
" auto sptr2 = sptr1; // Both share ownership\n",
" std::cout << \"shared value: \" << *sptr1 << \" use_count: \" << sptr1.use_count() << std::endl;\n",
Expand Down Expand Up @@ -294,6 +354,8 @@
],
"source": [
"// std::optional\n",
"optional<int> safeDivide(int a, int b) {\n",
" if (b == 0) return nullopt;\n",
"std::optional<int> safeDivide(int a, int b) {\n",
" if (b == 0) return std::nullopt;\n",
" return a / b;\n",
Expand All @@ -302,12 +364,28 @@
"auto r1 = safeDivide(10, 2);\n",
"auto r2 = safeDivide(10, 0);\n",
"\n",
"cout << \"10/2 = \" << (r1 ? to_string(*r1) : \"undefined\") << endl;\n",
"cout << \"10/0 = \" << (r2 ? to_string(*r2) : \"undefined\") << endl;"
"std::cout << \"10/2 = \" << (r1 ? std::to_string(*r1) : \"undefined\") << std::endl;\n",
"std::cout << \"10/0 = \" << (r2 ? std::to_string(*r2) : \"undefined\") << std::endl;"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "variant-demo",
"metadata": {},
"outputs": [],
"source": [
"// std::variant\n",
"using Number = variant<int, double, string>;\n",
"\n",
"vector<Number> numbers = {42, 3.14, string(\"forty-two\"), 100, 2.718};\n",
"\n",
"for (const auto& n : numbers) {\n",
" visit([](const auto& val) {\n",
" cout << val << \" (\" << typeid(val).name() << \")\" << endl;\n",
" }, n);\n",
"execution_count": 9,
"id": "variant-demo",
"metadata": {},
Expand Down Expand Up @@ -353,6 +431,9 @@
],
"metadata": {
"kernelspec": {
"display_name": "C++17",
"language": "cpp",
"name": "xcpp17"
"display_name": "C++23",
"language": "cpp",
"name": "xcpp23"
Expand All @@ -362,6 +443,7 @@
"file_extension": ".cpp",
"mimetype": "text/x-c++src",
"name": "C++",
"version": "17"
"nbconvert_exporter": "",
"pygments_lexer": "",
"version": "cxx23"
Expand Down