kotlin-patterns

name	kotlin patterns
description	Conventions for using Kotlin

1. Remove usage of !! operator

The !! operator should be avoided in Kotlin as it can lead to NullPointerException at runtime. Instead, use safe calls (?.) or the let scope function to handle nullable values more gracefully.

2. Remove the safe call operator (?.) when possible

Using the safe call operator (?.) is a good practice, but it should be used judiciously. It makes no sense to use this operator when the value is guaranteed to be non-null, as it can lead to unnecessary null checks and reduce code readability.

3. Avoid using var when possible

In Kotlin, it is recommended to use val instead of var whenever possible. This helps to make the code more readable and maintainable, as it makes it clear that the value of a variable is not expected to change.

4. Use Duration overload when possible

Example 1

When using the delay function, it is recommended to use the overload that accepts a Duration parameter instead of a Long parameter. This makes the code more readable and easier to understand, as it clearly indicates the intended duration of the delay.

replace this:

delay(100)

with this:

delay(100.milliseconds)

Add import: import kotlin.time.Duration.Companion.milliseconds