How to correctly concatenate a String in Kotlin?

Here are a few ways to correctly concatenate strings in Kotlin:

String Interpolation

The most common and concise way to concatenate strings in Kotlin is using string interpolation with the $ symbol:

val name = "Alice"
val age = 25
println("My name is $name and I am $age years old.")

Output:

My name is Alice and I am 25 years old.

String Templates

You can also use string templates to insert expressions inside strings:

val x = 5
val y = 10
println("x + y = ${x + y}")

Output:

x + y = 15

Plus Operator

The + operator can be used to concatenate strings:

val firstName = "John"
val lastName = "Doe"
va...