Kotlin- naming convention for boolean returning methods

Question

What is the naming convention for boolean returning methods?

Using an 'is', 'has', 'should', 'can' in the front of method sound ok for some cases, but I'm not sure. Is there a better way to name such methods? for example: a function that checks card's validation. Should I call it isValidCard or cardValidation or another name? (I didn't find it here: https://kotlinlang.org/docs/reference/coding-conventions.html)

Answer 1

Something about naming convention for properties in Kotlin, I know it's not for methods. But it's related:

From book Kotlin in Action (by Dmitry Jemerov & Svetlana Isakova) - section 2.2.1 Properties:

In Kotlin, properties are a first-class language feature, which entirely replaces fields and accessor methods.

Listing 2.5. Declaring a mutable property in a class:

class Person {     val name: String,      // read only property: generates a field and a trivial getter     var isMarried: Boolean // writable property: a field, getter and a setter } 

Kotlin’s name property is exposed to Java as a getter method called getName. The getter and setter naming rule has an exception: if the property name starts with is, no additional prefix for the getter is added and in the setter name, is is replaced with set. Thus, from Java, you call isMarried().