ios - What do the arguments mean betweem the < >? -

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this question has answer here:

i looking @ code related parse framework.

what following mean, paricularly referring parameters in < , > ?

@interface appdelegate()<pfloginviewcontrollerdelegate, pfsignupviewcontrollerdelegate>

this question moreso related objective-c parse itself, although knowing parse may answer question more effectively. thanks.

those protocols appdelegate class conforms to.


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