in a long time / for a long time

[maledicte]

Good evening !

Is the following sentence correct ?

"There was dust everywhere, as if nobody had come in a long time"

I know that "for a long time" would be right, but is it wrong to say "in a long time" in this context ? I'm sure I've heard and read "in a long time" several times, but I don't understand when it can be used, and when it can't.

Does anybody know for sure ?

Thanks !

[emsr2d2]

Good evening !

Is the following sentence correct ?

"There was dust everywhere, as if nobody had come in a long time"

I know that "for a long time" would be right, but is it wrong to say "in a long time" in this context ? I'm sure I've heard and read "in a long time" several times, but I don't understand when it can be used, and when it can't.

Does anybody know for sure ?

Thanks !

"In a long time" would be fine, but in my opinion, "come" is not natural. I would use:

"There was dust everywhere, as if nobody had been there in a long time."