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 […]
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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
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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
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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
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This article will discuss the usage details of std::all() function in C++, with examples.
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In this article, we will discuss what is a std::vector<> and how to use it in C++. What is a vector in C++? A vector is a STL Container, which acts like a dynamic array. It can grow or shrink as needed, and provides a number of useful member functions for working with the elements
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Learn how to return old C style array from a function in C++.
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This tutorial will discuss about a unique way to pass an array by reference to function in C++. Many times, we encounter a situation, where we need to pass a fixed size array to a function. For that we need to pass two data points in the function, Although, we can pass the array as
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In this article, we will learn about a STL Container std::array<> in C++. We will discuss its usage details with examples, and understand how its different from an old C style array. What is std::array<>? The std::array<> is a STL Container, and it is similar to the C style fixed size array. It can store
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In this article, we will learn how to remove certain characters from a string in C++. Table Of Contents Problem Description Method 1: Using while loop Method 2: Using STL function for_each(), erase() and remove() Special Notes about remove() and erase() Summary Problem Description Suppose we have a string sampleStr, and an array of characters
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