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Facebook uses functional programming to make News Feeds run smoothly

Joab Jackson | July 8, 2014
Facebook went with a novel programming methodology, called functional programming, to update the News Feed for its Apple iOS client, which helped considerably in tuning and debugging the app.

Ernst would like to release as open source the functional code used for the News Feed, though the code isn't ready for public release. But other development units within Facebook have taken an interest in the approach, Ernst said. For instance, the Facebook team working on the Android client is investing the possibility of using functional programming for its News Feed.

"Facebook is cross-pollinating. The nice thing about Facebook is you can share ideas between groups. So it's been exciting that we've been able to apply that to the iOS app," Ernst said.


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