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kotlinlang

`variable?.run{ }` == run this block if this thing is not null? correct?

Yes, but keep in mind it uses `variable` as it’s context.

Lets say `variable` contains some member function foo, and we’ll look at how all the neato blocks return:

```
val result = resultvariable?.run{
  foo()
}

result == Unit

val result = variable?.apply{
  foo()
}

result == variable

val result = variable?.let{
  it.foo()
}

result == result of foo()

val result = variable?.also{
  it.foo()
}

result == Unit
```

Hope this helps!