Merge pull request Mooophy#464 from clarelsy/patch-5

Improving 14_23.cpp

Author: pezy

ch14/ex14_23.cpp

@@ -146,6 +146,9 @@ bool operator>=(const StrVec &lhs, const StrVec &rhs)
 
 StrVec& StrVec::operator=(std::initializer_list<std::string> il)
 {
-    *this = StrVec(il);
+    auto data = alloc_n_copy(il.begin(), il.end());
+    free();
+    elements = data.first;
+    first_free = cap = data.second;
     return *this;
 }