Macros for NSPredicate and NSSortDescriptor

gistfile1.m

#define pred(format) [NSPredicate predicateWithFormat:format]

#define sort(key, asc) [NSArray arrayWithObject:[NSSortDescriptor sortDescriptorWithKey:key ascending:asc]]

//array of core data entities (giggle!)
NSArray *entities = (.)(.)

//filter array
NSArray *filtered = [entities filteredArrayUsingPredicate:pred(@"timestamp != nil")];

//sort array
NSArray *sorted = [entities sortedArrayUsingDescriptors:sort(@"timestamp", YES)];