1. Var — var is used to declare a variable. If we want to declare a variable that’s value can be change we should use the var. 10 2. Val- If we want to declare a read only variable we should use the Val. One of the important thing about val is we can assign to val at runtime.
lazy () is a function that takes a lambda and returns an instance of lazy which can serve as a delegate for implementing a lazy property: the first call to get () executes the lambda passed to lazy () and remembers the result, subsequent calls to get () simply return the remembered result. val test: String by lazy {. val testString = "some value".
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If 100 hypothetical trials of monthly returns for the QQQ were conducted, two of the worst outcomes may be between -15% and -20%, and three between -20% and 25%. That means the worst five outcomes There are three ways to declare a MutableState object in a composable: val mutableState = remember { mutableStateOf (default) } var value by remember { mutableStateOf (default) } val (value, setValue) = remember { mutableStateOf (default) } These declarations are equivalent, and are provided as syntax sugar for different uses of state. Also .attr ('value') returns the value that was before editing input field. And .val () returns the current value. When working with a text entry field, the setter methods of .attr () and .val () work differently. will set the value the user sees on the page and update the value returned by subsequent .val () method calls.

var and val are both used to declare variables in Kotlin language. However, there are some key differences between them: VAR(Variable) It is a general variable. The value of a variable that is declared using var can be changed anytime throughout the program. var is also called mutable and non-final variable, as there value can be changed

1. If you use without val, you cannot use that variable inside the class, for example, class FeedAdapter (context: Context, val resource: Int, val applications: List) for this, you can access resource and applications variables in FeedAdapter class, but not the context variable. Share. Improve this answer.

This is a read-only value. var is a mutable value. const would on the other hand be not 100% correct. The value PI (3.14..) is a constant. Its value never changes. The value of x in this line val x = random.nextInt () will (hopefully) always be different, but you want the value not to be modified in the function.

21. Another difference that is not mentioned in the other answers is that if you use the anonymous function and use that as a constructor as in. var functionOne = function () { // Some code }; var one = new functionOne (); console.log (one.constructor.name); then one.constructor.name will not be defined.
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    • difference between var and val