Facebook, Inc.

Qixing Du

Kang Zhang

Joshua Li

I Chien Peng

Jonathan M Kaldor

Ashwin Bhat

In one embodiment, a computing device detects an event corresponding to a change in a graphical user interface displayed by the computing device; the computing device identifies at least one operation based on the detected event; the computing device determines a state of the identified operation; the computing device also defers the identified operation based at least in part on the determined state.

Defer heavy operations while scrolling

In one embodiment, a computing device receives receive a request for particular content associated with an application. The device may determine, based on a first recycling policy associated with a first recycler, that the first recycler associated with the application includes a display object that is capable of being used for containing the particular content. The device may encapsulate the display object with the particular content in a wrapper object and return the wrapper object encapsulating the display object in response to the request. The device may receive an indication that the display object is no longer needed, and extract the display object from the wrapper object. The display object may be stored in the first recycler. The wrapper object without the display object may be disposed in accordance with a second recycling policy associated with a second recycler associated with an operating system of the computing device.

Application-tailored object re-use and recycling

In one embodiment, a computing device receives a request for content in a first portion of a content layout in a displayable region of a screen associated with the computing device. The device may pre-inflate at least one selected element of a display object for a second portion of the content layout, and then store the element in an application-tailored recycler. Selection of the at least one selected element may be based on dimensions of the displayable region, available memory of the computing device, or application-specific rules. The device may then retrieve, in response to a request for content in the second portion of the content layout, the element from the application-tailored recycler, update other elements of the display object as needed for the second portion of the content layout, and return the display object.

Application-tailored object pre-inflation

A computing device receives a request for content for a content layout in a displayable region of a screen associated with the device. The device determines, based on application-tailored recycling policies, whether a recycler includes a display object that is suitable for recycling or re-use. If it does not, the device creates the display object and fills it with the content. If it does, and if the display object contains the content, the device updates elements of the display object as needed; otherwise, if the display object does not contain the content, the device fills the display object with the content and returns it. The recycling or re-using may also be performed with sub-elements of a display object, some of which may comprise nested display objects.

Systems, methods, and non-transitory computer-readable media can receive from a user a machine-readable code associated with a group. The group can be identified based on the machine-readable code. A set of current members of the group can be identified. The user can be provided with access to the set of current members of the group. In some instances, an identifier for the user can be received. The user can be added, based on the identifier, to the set of current members of the group. The current members can be provided with access to the set of current members including the user.

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Sunnyvale, CA, United States of America

Qixing Du