The first and most straightforward way of finding the variable type in Kotlin is to use theiskeyword. It does not give you the exact variable type but allows checking the type. You can use theiskeyword to determine if the variable type is the same as what you think it is. You can use...
In Kotlin, we can use theFilebuilt-inexists()method to check if a file exists. 1. Using Kotlin to Check if a File Exists In Kotlin, we use theexists()function from theFileclass. Here’s how it looks: CheckFile.kt importjava.io.Filefunmain(){valfile = File("example.txt")if(file...
To check if String starts with specified character in Kotlin, use String.startsWith() method. str1.startsWith(ch) returns a boolean value of true if the string str1 starts with the character ch, or false if not.
Check if String Contains Certain Data in MySQL Table Using SELECT With INSTR() FunctionAnother method to check whether a string occurs in a table involves using the SELECT statement with the INSTR() function. This function is similar to LOCATE() and is employed to determine the position of ...
Data can get corrupted when stored or transmitted. This article explains how you can use a CRC to detect accidental errors in your data.
Use The Jackson Library To Parse String In Kotlin Jackson is a popular library of Kotlin to parse and manipulate JSON data. The library supports both the reading as well as writing JSON data. The advantage of using this library is that we do not need to parse the data manually. The libra...
Learn how to build an API in Spring Boot and Kotlin that uses Twilio’s Programmable Voice to make an outbound phone call to a given contact.
In order to use value of an optional, it needs to be unwrapped. Better way to use optional value is by conditional unwrapping rather than force unwrapping using ! operator. This is because conditionally unwrapping asks Check if this variable has a value? . If yes, give the value, otherwise...
@Entity(tableName ="notes")dataclassNote(@PrimaryKey@ColumnInfo(name ="dateAdded")valdateAdded: Date,@ColumnInfo(name ="noteText")valnoteText: String )Code language:Kotlin(kotlin) IMPORTANT!You always have to set a primary key (@PrimaryKey) in the database schema. ...
Check our article and find our dating website types, cost, features to include, and how we can help you during development How to Create a Dating App: 7 Steps Plan To help you find the most appropriate approach to successful dating app development, here is a 7-step roadmap that may ...