is there any difference in these two ``` val isEmp...

# android

[sudhanshu singh]

is there any difference in these two

val isEmpty: Boolean
    get() = this.size == 0

val isEmpty =  this.size==0

[lex]

yes, in first case it will be getter method with this.size == 0 body, in second you just initialize property

[julioyg]

you beat me to it

[Paul Woitaschek]

Yep, when the size changes, the value returned from the second property won't get updated

[louiscad]

In other words, the second one is an immutable property with a backing field that can't change while the first ont is a read only property that returns isEmpty according to the curreny value of size

[adam-mcneilly]

In these cases - where you want to use the first one because you don't want the immutable property - is it better to use a function instead of a val/override get, or are they effectively the same?

[adam-mcneilly]

I find myself using the first one a lot more because I like the style, and that's probably fine for all intents and purposes, right?

[louiscad]

@adam-mcneilly Computed read-only properties are fine and idiomatic, in fact you can see a lot of them in the stdlib, especially in collections