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11.5.11 Data Type Generic Index Front Functions

i_front

object i_front(index i);

is the data in the first position in the i index

if_pick

object if_pick(index i);

is the data in the first position in the i index, the data is removed from the index

if_query

object if_query(index i);

is the data in the first position in the i index (same as ‘i_front’)