(concurring) :
I concur on the ground that on the state of the record before us there is no basis to warrant declaring the ordinance in question unconstitutional. That it is the policy of courts not to become involved unnecessarily in the legislative prerogative, see Heathman v. Giles, 13 Utah 2d 368, 374 P.2d 839; and Salt Lake City v. Perkins, 9 Utah 2d 317, 343 P.2d 1106. But also cf. Ritholz v. City of Salt Lake, 3 Utah 2d 385, 284 P.2d 702.