cow_darray, darray: Add toString() and free std::ostream << (toString)

3 files changed, 60 insertions, 0 deletions

diff --git a/include/jau/cow_darray.hpp b/include/jau/cow_darray.hpp
index b4a3acb..7bbf7c4 100644
--- a/include/jau/cow_darray.hpp
+++ b/include/jau/cow_darray.hpp
@@ -912,8 +912,28 @@ namespace jau {
                 } // else throw away new_store_ref
                 return count;
             }
+
+            __constexpr_cxx20_ std::string toString() const noexcept {
+                std::string res("{ " + std::to_string( size() ) + ": ");
+                int i=0;
+                jau::for_each_const(*this, [&res, &i](const value_type & e) {
+                    if( 1 < ++i ) { res.append(", "); }
+                    res.append( jau::to_string(e) );
+                } );
+                res.append(" }");
+                return res;
+            }
     };
 
+    /****************************************************************************************
+     ****************************************************************************************/
+
+    template<typename Value_type, typename Alloc_type>
+    std::ostream & operator << (std::ostream &out, const cow_darray<Value_type, Alloc_type> &c) {
+        out << c.toString();
+        return out;
+    }
+
 } /* namespace jau */
 
 /** \example test_cow_iterator_01.cpp
diff --git a/include/jau/cow_vector.hpp b/include/jau/cow_vector.hpp
index 0a5dc94..5a55073 100644
--- a/include/jau/cow_vector.hpp
+++ b/include/jau/cow_vector.hpp
@@ -618,8 +618,28 @@ namespace jau {
                 } // else throw away new_store_ref
                 return count;
             }
+
+            __constexpr_cxx20_ std::string toString() const noexcept {
+                std::string res("{ " + std::to_string( size() ) + ": ");
+                int i=0;
+                jau::for_each_const(*this, [&res, &i](const value_type & e) {
+                    if( 1 < ++i ) { res.append(", "); }
+                    res.append( jau::to_string(e) );
+                } );
+                res.append(" }");
+                return res;
+            }
     };
 
+    /****************************************************************************************
+     ****************************************************************************************/
+
+    template<typename Value_type, typename Alloc_type>
+    std::ostream & operator << (std::ostream &out, const cow_vector<Value_type, Alloc_type> &c) {
+        out << c.toString();
+        return out;
+    }
+
 } /* namespace jau */
 
 #endif /* JAU_COW_VECTOR_HPP_ */
diff --git a/include/jau/darray.hpp b/include/jau/darray.hpp
index c8dbb8c..e4a11b2 100644
--- a/include/jau/darray.hpp
+++ b/include/jau/darray.hpp
@@ -1000,7 +1000,27 @@ namespace jau {
                 }
                 return count;
             }
+
+            __constexpr_cxx20_ std::string toString() const noexcept {
+                std::string res("{ " + std::to_string( size() ) + ": ");
+                int i=0;
+                jau::for_each_const(*this, [&res, &i](const value_type & e) {
+                    if( 1 < ++i ) { res.append(", "); }
+                    res.append( jau::to_string(e) );
+                } );
+                res.append(" }");
+                return res;
+            }
     };
+
+    /****************************************************************************************
+     ****************************************************************************************/
+
+    template<typename Value_type, typename Alloc_type>
+    std::ostream & operator << (std::ostream &out, const darray<Value_type, Alloc_type> &c) {
+        out << c.toString();
+        return out;
+    }
 } /* namespace jau */
 
 #endif /* JAU_DYN_ARRAY_HPP_ */