In this tutorial, we’ll review several ways of checking if aStringcontains a substring, and we’ll compare the performance of each. 2.String.indexOf Let’s first try using theString.indexOfmethod.indexOfgives us the first position where the substring is found, or -1 if it isn’t found...
The python str class has a __contains__() method that will check if a python string contains a substring. It will return true if it’s found and will return false if it’s not. You will notice that the method name is wrapped in two underscores. This prevents this method from being ...
bool string.Contains(string substring); C# program to check if string contains substring usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;namespaceConsoleApplication1{classProgram{staticvoidMain() {stringstr ="Hello How are you? ";if(str.Contains("How") ==true) { Cons...
To check if a string contains a substring using String.includes() in JavaScript: Call the String.includes() method on the string. Pass the substring as a parameter, e.g. String.includes(substr). The String.includes() method returns true if the substring is contained in the string. ...
$substring = 'doesnt exist'; var_dump(stristr($string, $substring)); In this case, the function will return a FALSE value. A case-sensitive check to see if a string contains a substring. If the case does matter to you, then you can use the strstr function instead. ...
Example of using String __contains__() Method Let’s look at some examples of how to check whether a string contains a substring in Python. Example 1 str = "Hello World!" sub_str = "World" if (str.__contains__(sub_str)): print("String contains Substring") else: print("String do...
Another way to check if a string contains a substring in Python is by using thefind()method. It returns the index of the first occurrence of the substring within the string. If the substring is not found, it returns -1. Here’s an example: ...
SQL contains string - In this blog, I will explain how to check a specific word or character in a given statement in SQL Server, using CHARINDEX function or SQL Server and check if the string contains a specific substring with CHARINDEX function. An alternative to CHARINDEX() is using LIKE...
To check if a Javascript String Contains a substring or not, we can use 7 different Javascript methods as listed in below table.
alert('Our string contains the string: ' + search); } In the example above, we converted both strings to uppercase before we performed our substring search. If you run this example, you will see that the output is: Our string contains the string: ELlo ...