In Dart, a named constructor allows you to create multiple ways to instantiate a class by defining additional constructors with meaningful names. This is useful…
In Flutter/Dart, async and await are used for asynchronous programming, allowing you to write code that performs tasks concurrently without blocking the main thread.async: This…
There are two ways to create nullable variable. 1) Using var keyword, Syntax : var variable_name;2) Using datatypeSyntax : int? variable_name; Nullable variable creation using…
In Dart, typedef is used to define function type aliases, which makes it easier to declare variables, parameters, or return types of functions with specific…
In Dart, anonymous functions (also called lambda functions or closures) are functions without a name. They are useful for short-lived operations, especially when passing functions…
Description:-perform a delete SQL query after checking whether the record is present or not.anyone can use this method to perform other query operations. Example:- user_iduser_nameuser_email1Arunarun123@gmail.com2Sujansujan123@gmail.com3Rohitrohit123@gmail.com…
