arr.sa


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-- Copyright (C) 2000 by K Hopper, University of Waikato, New Zealand        --
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abstract class $RO_ARR{ETP} < $CONTAINER{ETP}

abstract class $RO_ARR{ETP} < $CONTAINER{ETP} is -- This abstraction is for a read-only array which forms the interface to -- other array classes. -- Version 1.5 Jan 97. Copyright K Hopper, U of Waikato -- Development History -- ------------------- -- Date Who By Detail -- ---- ------ ------ -- 11 Apr 94 bg Original -- 12 Jul 96 hk Modified for Sather 1.1 -- 13 Jan 97 kh Changed to CARD from INT aget( index : CARD ) : ETP ; -- Provided that the pre-condition has_ind(index)is satisfied then -- this routine returns the element of the array which corresponds to index. has_ind( val : CARD ) : BOOL ; -- This routine returns true if and only if val is less than the array -- size. ind! : CARD ; -- This iter yields all of the indices of an array -- the numbers -- between zero and (size - 1). end ; -- $RO_ARR{ETP}

abstract class $ARR{ETP} < $RO_ARR{ETP}

abstract class $ARR{ETP} < $RO_ARR{ETP} is -- This abstract class models the general array where the indices are -- cardinal numbers less than the array size. It is similar to a MAP from -- numbers to elements, but has more more restrictive conditions. -- Version 1.5 Jan 97. Copright K Hopper, U of Waikato -- Development History -- ------------------- -- Date Who By Detail -- ---- ------ ------ -- 11 Apr 94 bg Original -- 12 Jul 96 hk Modified for Sather 1.1 -- 13 Jan 97 kh Changed to CARD from INT aset( index : CARD, elem : ETP ) ; -- Provided that the pre-condition has_ind(index) is satisfied then -- this routine sets the element of the array which corresponds to index to -- have the value elem. set!( elem : ETP ) ; -- This feature is provided to set successive elements of the array to -- the given element value. end ; -- $ARR{ETP}