From 16379362c02a2472f00fac49cad62788547c9519 Mon Sep 17 00:00:00 2001
From: Dominick Allen <djallen@librehumanitas.org>
Date: Wed, 1 Jan 2025 17:41:17 -0600
Subject: Add CSV parsing, printing, fix buffered file reading.

---
 include/fud_type_traits.hpp | 80 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 include/fud_type_traits.hpp

(limited to 'include/fud_type_traits.hpp')

diff --git a/include/fud_type_traits.hpp b/include/fud_type_traits.hpp
new file mode 100644
index 0000000..3fdff79
--- /dev/null
+++ b/include/fud_type_traits.hpp
@@ -0,0 +1,80 @@
+/*
+ * libfud
+ * Copyright 2024 Dominick Allen
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FUD_TYPE_TRAITS_HPP
+#define FUD_TYPE_TRAITS_HPP
+
+#include <cstddef>
+#include <type_traits>
+
+namespace fud {
+
+template <template <class, size_t> class Container, typename T, size_t Size>
+constexpr bool hasDuplicates(Container<T, Size> const& arr)
+{
+    for (size_t iIdx = 1; iIdx < Size; iIdx++) {
+        for (size_t jIdx = 0; jIdx < iIdx; jIdx++) {
+            if (arr[iIdx] == arr[jIdx]) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+template <typename T, size_t Size>
+struct Array;
+
+template <typename T, T... Vs>
+constexpr bool hasDuplicates()
+{
+    static_assert(sizeof...(Vs) > 0);
+    constexpr Array<T, sizeof...(Vs)> arr{{Vs...}};
+    return hasDuplicates(arr);
+}
+
+template <template <class, size_t> class Container, typename T, T... Vs>
+constexpr bool hasDuplicates()
+{
+    static_assert(sizeof...(Vs) > 0);
+    constexpr Container<T, sizeof...(Vs)> arr{{Vs...}};
+    return hasDuplicates(arr);
+}
+
+template <typename...>
+inline constexpr auto isUnique = std::true_type{};
+
+template <typename T, typename... Rest>
+inline constexpr auto
+    isUnique<T, Rest...> = std::bool_constant<(!std::is_same_v<T, Rest> && ...) && isUnique<Rest...>>{};
+
+
+template <template <class, size_t> class Container, class T, size_t N>
+constexpr bool allDifferentFrom(Container<T, N>& data, const T& value)
+{
+    for (size_t i = 0; i < data.size(); ++i) {
+        if (data[i] == value) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+} // namespace fud
+
+#endif
-- 
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