myString?.let{ mTextview.text = myString }

# android

[oscarg798]

myString?.let{
mTextview.text = myString
}

[vivekneel]

Yup. Anyways, did not you get any warning or compile time error when you called let on a nullable object?

[marstran]

let is defined for all objects. Even nullable ones.

[joachim.reiss.]

you can also write `it`inside of the let

[tokajip]

or you can use apply and it’ll as simple as text=..

[marstran]

Do you mean mTextview.apply { text = myString } @tokajip ? In that case, you lose the null-check on myString.

[tokajip]

Yes, but I mean mTextView?.apply { text = myString } you’ll have null-check on myString and save the myString or it inside the function

[marstran]

Now you have the nullcheck on mTextView which isn't nullable. myString can still be null.

[tokajip]

Ohh, my mistake. I thought in the original post it was TextView on called ?.let{ } but as I looked again, I saw its a String
But on Android you can set null for a TextView text property, because the system’ll transform it to an empty String

[marstran]

Yep, but he might want to keep the old text when myString is null.