Initial Course

modules/14_cpp26/src/constexpr_frontier.cpp

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+#include "constexpr_frontier.hpp"
+
+namespace cpp26 {
+
+auto compile_time_factorial(int n) -> long long {
+    (void)n;
+    return 1;
+}
+
+auto compile_time_sum(std::array<int, 5> values) -> int {
+    (void)values;
+    return 0;
+}
+
+auto is_sorted(std::array<int, 5> values) -> bool {
+    (void)values;
+    return false;
+}
+
+}  // namespace cpp26

modules/14_cpp26/src/custom_formatter.cpp

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+#include "custom_formatter.hpp"
+
+namespace cpp26 {
+
+auto format_point(const Point& point) -> std::string {
+    (void)point;
+    return {};
+}
+
+auto format_points(const Point& a, const Point& b) -> std::string {
+    (void)a; (void)b;
+    return {};
+}
+
+}  // namespace cpp26

modules/14_cpp26/src/monadic_expected.cpp

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+#include "monadic_expected.hpp"
+
+namespace cpp26 {
+
+auto parse_id(const std::string& text) -> std::expected<int, ErrorCode> {
+    (void)text;
+    return std::unexpected(ErrorCode::Invalid);
+}
+
+auto load_user(int id) -> std::expected<std::string, ErrorCode> {
+    (void)id;
+    return std::unexpected(ErrorCode::NotFound);
+}
+
+auto load_user_name(const std::string& text) -> std::expected<std::string, ErrorCode> {
+    (void)text;
+    return std::unexpected(ErrorCode::Invalid);
+}
+
+}  // namespace cpp26

modules/14_cpp26/src/pipeline_ranges.cpp

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+#include "pipeline_ranges.hpp"
+
+namespace cpp26 {
+
+auto top_values_by_category(const std::vector<Record>& records, int min_value)
+    -> std::vector<Record> {
+    (void)records; (void)min_value;
+    return {};
+}
+
+auto total_by_category(const std::vector<Record>& records)
+    -> std::vector<std::pair<std::string, int>> {
+    (void)records;
+    return {};
+}
+
+}  // namespace cpp26