Move utility functions to end of file

Author: klmr

test.cpp

@@ -6,50 +6,10 @@
 #include <vector>
 
 template <typename R>
-void print_range(R const& range) {
-    using T = typename std::iterator_traits<decltype(range.begin())>::value_type;
-    std::copy(range.begin(), range.end(), std::ostream_iterator<T>(std::cout, " "));
-    std::cout << "\n";
-}
+void print_range(R const& range);
 
 template <typename R>
-std::size_t manual_range_size(R const& range) {
-    std::size_t size = 0;
-    for (auto const& _ : range) ++size, (void) _;
-    return size;
-}
-
-namespace util { namespace lang {
-
-// template <typename T>
-// struct is_a_step_range : std::false_type {};
-
-// template <typename T>
-// struct is_a_step_range<typename range_proxy<T>::step_range_proxy> : std::true_type {};
-
-template <typename T>
-std::ostream& operator <<(std::ostream& out, step_range_proxy<T> const& r) {
-    return out << "range(" << *r.begin() << ", " << *r.end() << ")"
-        << ".step(" << r.begin().step_ << ")";
-}
-
-template <typename T>
-std::ostream& operator <<(std::ostream& out, range_proxy<T> const& r) {
-    return out << "range(" << *r.begin() << ", " << *r.end() << ")";
-}
-
-}}
-
-template <typename R>
-void test_range_size(R const& range) {
-    auto const real_size = manual_range_size(R{range});
-    if (real_size == range.size()) {
-        std::cout << range << ".size() = " << real_size << "\n";
-    } else {
-        std::cout << "ERROR: " << range << ".size() ≠ " << real_size
-            << " (was " << range.size() << ")!\n";
-    }
-}
+void test_range_size(R const& range);
 
 int main() {
     using std::cout;
@@ -110,3 +70,44 @@ int main() {
     test_range_size(range(0.1, 0.11).step(2));
     test_range_size(range(-7, 1).step(7));
 }
+
+namespace util { namespace lang {
+
+template <typename T>
+std::ostream& operator <<(std::ostream& out, step_range_proxy<T> const& r) {
+    return out << "range(" << *r.begin() << ", " << *r.end() << ")"
+        << ".step(" << r.begin().step_ << ")";
+}
+
+template <typename T>
+std::ostream& operator <<(std::ostream& out, range_proxy<T> const& r) {
+    return out << "range(" << *r.begin() << ", " << *r.end() << ")";
+}
+
+}}
+
+template <typename R>
+void print_range(R const& range) {
+    using T = typename std::iterator_traits<decltype(range.begin())>::value_type;
+    std::cout << range << " = ";
+    std::copy(range.begin(), range.end(), std::ostream_iterator<T>(std::cout, " "));
+    std::cout << "\n";
+}
+
+template <typename R>
+std::size_t manual_range_size(R const& range) {
+    std::size_t size = 0;
+    for (auto const& _ : range) ++size, (void) _;
+    return size;
+}
+
+template <typename R>
+void test_range_size(R const& range) {
+    auto const real_size = manual_range_size(R{range});
+    if (real_size == range.size()) {
+        std::cout << range << ".size() = " << real_size << "\n";
+    } else {
+        std::cout << "ERROR: " << range << ".size() ≠ " << real_size
+            << " (was " << range.size() << ")!\n";
+    }
+}