iphone - Is a pointer used with a NSTimeInterval? -
do use pointer nstimeinterval though defined int?
instance use: nstimeinterval *time
or nstimeinterval time
thank you!
nstimeinterval
double
, double-click symbol while holding cmd see typedef
. use directly, can use pointer example able change value in method call:
- (void) dosomethinglongandreturnduration: (nstimeinterval*) duration { cfabsolutetime start = cfabsolutetimegetcurrent(); … cfabsolutetime end = cfabsolutetimegetcurrent(); *duration = end-start; }
this weird example, idea.
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