Tag: Check
How check if a given key exists in a Map | C++
In this article we will discuss how to find if a given key exists in map or not. Map internally store elements in Key-Value pair. It provides 2 member functions to check if a given key exists in map i.e. Advertisements std::map::find std::map::count Check if map contains a key using std::map::count std::map provides a member …
C++ : Check if a String starts with an another given String
In this article we will discuss both case sensitive and insensitive implementations to check if a string starts with an another given string. In c++, std::string class does not provides any startsWith() function to check if a string starts with an another given string. Let’s see how to do that using std::string::find and Boost Library. Advertisements …
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C++ : How to check if a String Ends With an another given String
In this article we will discuss both case sensitive and insensitive implementations to check if a string ends with an another given string. In previous article we discussed different implementations of startsWith() function for std::string. Here on similar lines we will discuss different implementations of endsWith() function. Advertisements In c++, std::string class does not provides any …
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C++ : How to check if a Set contains an element | set::find vs set::count?
In this article we will discuss how to check if a given element exists in set or not. Suppose we have a set of strings i.e. Advertisements // Set of strings std::set<std::string> setOfStrs = { “the”, “is”, “of” , “from” , “at” , “hello” , “the” }; Now we wnat to check if any given …
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C++ : Check if given path is a file or directory using Boost & C++17 FileSystem Library
In this article we will discuss different ways to check if given path is of file or directory that exists using Boost Filesystem Library & C++17 Filesystem Library. Both Boost Filesystem library & C++17 Experimental filesystem library provides certain functions that we are going to use here, Advertisements bool exists(const path& p); In Boost Library’s …
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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 : 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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Python : Check if a list contains all the elements of another list
In this article we will discuss if a list contains all or any elements of another list. Suppose we have have two list i.e. Advertisements # List of string list1 = [‘Hi’ , ‘hello’, ‘at’, ‘this’, ‘there’, ‘from’] # List of string list2 = [‘there’ , ‘hello’, ‘Hi’] Check if list1 contains all elements of …
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Python : How to check if a directory is empty ?
In this article we will discuss different ways to check if a directory is empty or not. Python’s os module provides a function to get the list of files or folder in a directory i.e. Advertisements os.listdir(path=’.’) It returns a list of all the files and sub directories in the given path. Now if the …
How to check if a file or directory or link exists in Python ?
In this article we will discuss techniques in python to check if a file exists or a link or a directory exists or not. Python – Check if a path exists Python’s os module provides a function to check if a given path exists or not i.e. Advertisements os.path.exists(path) It will True if the path …
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