I saw it a couple weeks ago but had to go online to recall it.
Idris Elba was very good as The Gunslinger; otherwise, the film was rather dull and dark. Matthew McConaughey was a cardboard cutout villain.
The reviews indicate the Stephen King books are chock full of action and detail, difficult to properly translate to an hour and a half on film.
As I wrote, I'd all but forgotten it . . .