Fix Observable to not trigger unneccessary refresh if the value didn't change
Fix Observable to not trigger unneccessary refresh if the value didn't change

Differential Revision: D5251218

fbshipit-source-id: 1ceb37dd727e8ac2fd842e2c437cdaa9017221c8

rklabs/folly,rklabs/folly,rklabs/folly,Orvid/folly,facebook/folly,Orvid/folly,facebook/folly,Orvid/folly,Orvid/folly,rklabs/folly,Orvid/folly,rklabs/folly,facebook/folly,facebook/folly,facebook/folly