How to find the length of a string in Kotlin

How to find the length of a string in Kotlin.

Here's a step-by-step tutorial on how to find the length of a string in Kotlin.

Initialize a string variable:
```
val myString = "Hello, World!"
```
Using the length property: The simplest way to find the length of a string in Kotlin is by using the length property. This property returns the number of characters in the string.
```
val stringLength = myString.length
```
Printing the length: You can print the length of the string using the println function.
```
println("The length of the string is: $stringLength")
```
Using a function: Alternatively, you can create a function to find the length of a string. Here's an example:
```
fun getStringLength(inputString: String): Int {
    return inputString.length
}
```
Calling the function: You can call the getStringLength function and pass the string as an argument. It will return the length of the string.
```
val stringLength = getStringLength(myString)
println("The length of the string is: $stringLength")
```
Handling null strings: If the string can be null, you can use the null-safe call operator (?.) to safely retrieve the length. This ensures that the code doesn't throw a NullPointerException if the string is null.
```
val nullableString: String? = null
val nullableStringLength = nullableString?.length
println("The length of the nullable string is: $nullableStringLength")
```
Checking for an empty string: To check if a string is empty (has no characters), you can use the isEmpty() function. It returns true if the string is empty, and false otherwise.
```
val isEmptyString = myString.isEmpty()
println("Is the string empty? $isEmptyString")
```
Checking for a blank string: If you want to check if a string is empty or contains only whitespace characters, you can use the isBlank() function. It returns true if the string is blank, and false otherwise.
```
val isBlankString = myString.isBlank()
println("Is the string blank? $isBlankString")
```

That's it! You now know how to find the length of a string in Kotlin using different methods.