Tag: List
C++ : How to Sort a List of objects with custom Comparator or lambda function
In this example we will discuss different ways to sort a std::list of user defined data types with custom comparators or lambda functions. Suppose we have a type Player that contains Id and name. Advertisements struct Player { int id; std::string name; Player(int playerId, std::string playerName) : id(playerId), name(playerName) { } bool operator <(const Player …
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C++ : Different Ways to iterate over a List of objects
In this article we will discuss different ways to iterate through std::list of objects. Suppose we have a struct Player that contains id and name i.e. Advertisements struct Player { int id; std::string name; Player(int playerId, std::string playerName) : id(playerId), name(playerName) { } }; Lets create a list Player objects i.e. std::list<Player> listofPlayers = { …
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C++ List – Find | Contains : How to search an element in std::list ?
In this article we will discuss different ways to find or search a given element in the list. std::list does not provide ant find() or contains() method. So, if we want to search for an element in list or check if an element exists in std::list, then we not to write some code for it i.e. …
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C++ : Get the list of all files in a given directory and its sub-directories using Boost & C++17
In this article we will discuss how to fetch the recursive list of all files in a given directory using Boost and C++17 FileSystem Library. Suppose we have a directory i.e. Advertisements /home/user/study/tutorials and I want list of all files in this directory and its sub directories, but also want to skip certain directory like …
C++ : How to reverse a List or sub-list in place?
In this article we will discuss how to discuss different ways to reverse a complete std::list or a sub list inside a list. Suppose we have a list of strings i.e. Advertisements std::list<std::string> listOfStrs = { “is”, “of”, “the”, “Hi”, “Hello”, “from” }; Now we want to reverse it i.e. from , Hello , Hi …
Python : Different ways to Iterate over a List in Reverse Order
In this article we will discuss different ways to Iterate over a python list in reverse order. Suppose we have a python list of strings i.e. Advertisements # List of string wordList = [‘hi’, ‘hello’, ‘this’, ‘that’, ‘is’, ‘of’] Now we want to iterate over this list in reverse order( from end to start ) …
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C++ : How to copy / clone a STL List or Sub List
In this article we will discuss different techniques to clone the whole list or copy just a sub list. Suppose we have a std::list of strings i.e. Advertisements // List of strings std::list<std::string> listOfStrs = { “of”, “is”, “from”, “this”, “at”, “to” }; Now let’s see how to copy this or a sub list from …
Python : How to Check if an item exists in list ? | Search by Value or Condition
In this article we will discuss different ways to check if a given element exists in list or not. Table of Contents Introduction Check if element exists in list using python “in” Operator Check if element exist in list using list.count() function Check if element exist in list based on custom logic Introduction Suppose we …
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Python : Sort a List of numbers in Descending or Ascending Order | list.sort() vs sorted()
In this article we will discuss how to sort a list of numbers in ascending and descending order using two different techniques. list.sort() vs sorted() list’s sort() function In Python, list provides a member function sort() that can sorts the calling list in place. Advertisements sorted() Function It’s a built in function that accepts an …
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Python : Check if all elements in a List are same or matches a condition
In this article we will dicuss different ways to check if all element in a given List are same or matches a condition. Suppose we have a list of string i.e. Advertisements # List of string listOfStrings = [‘Hello’] * 10 Now let’s use python all() function to check if all elements in the given …
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