Whatsapp promised to roll out only once view feature in messaging app and whatsapp have successfully launched it.
Now you can do it easily on your regular whatsapp with latest update.
All you have to do is open your phone camera through whatsapp select the view only once feature on right corner.
Then click the picture and now you can send best snaps to your friends and family members. I just tried it, give it a try its supercool.