This tutorial will discuss how to C++ map contains() function | C++20 tutorial. To check if a map contains a key or not in C++, we can use the contains() member function of map. An important point to note here is that this contains() function was introduced in C++20 only. Prior to that, we could …
This tutorial will discuss how to check if all values in a map are equal in C++. To check if all the values in a map are equal or not, we can first fetch the value of the first key-value pair in the map, and then we can compare this value with all the remaining …
This tutorial will discuss how to check the last key of map in C++. The map stores the data in a sorted order of keys, so if somebody wants to check the last key of a map, it means that they’re looking for the largest key in the map. For example, we have a map …
This tutorial will discuss how to check if a map is empty in C++. To check if a map is empty or not, we can use the member function empty() from std::map in C++. The map class provides a function, empty(), which returns true if the calling map object does not have any key-value pair …
This tutorial will discuss how to check if a value exists in a map in C++. To check if a map contains a value or not, we can iterate over all the key-value pairs of the map using a range-based for loop, and then for each pair, we can compare the second value of the …
In this article we will discuss how to insert one or multiple elements at specific index in vector.
In this article we will discuss how to fetch all values from a map and put them in vector.
In this article we will discuss different ways to find or search a given element in the list.
In this article we will compare std::map and std::unordered_map and will also discuss when to choose one over another.
In this article we will discuss two different ways to erase elements from map i.e.
