diff options
| -rw-r--r-- | c++.html.markdown | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/c++.html.markdown b/c++.html.markdown index f1ad0790..225472cb 100644 --- a/c++.html.markdown +++ b/c++.html.markdown @@ -1027,7 +1027,6 @@ for (it = my_vector.begin(); it != my_vector.end(); ++it) { // Set // Sets are containers that store unique elements following a specific order. -// For hash sets, use unordered_set. They are more effecient but do not preserve order. // Set is a very useful container to store unique values in sorted order // without any other functions or code. @@ -1058,11 +1057,12 @@ cout << ST.size(); // will print the size of set ST // Output: 0 // NOTE: for duplicate elements we can use multiset +// NOTE: For hash sets, use unordered_set. They are more effecient but +// do not preserve order. unordered_set is available since C++11 // Map // Maps store elements formed by a combination of a key value // and a mapped value, following a specific order. -// For hash maps, use unordered_map. They are more effecient but do not preserve order. #include<map> map<char, int> mymap; // Will initialize the map with key as char and value as int @@ -1086,6 +1086,8 @@ cout << it->second; // Output: 26 +// NOTE: For hash maps, use unordered_map. They are more effecient but do +// not preserve order. unordered_map is available since C++11. /////////////////////////////////// // Logical and Bitwise operators |