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Adds a specified increment to the numeric value of a variable.
WRITE !,result /* result is 8 (a+1) */
WRITE !,a /* variable a is also now 8 */
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You can use the
function to return the current value of a variable.
$INCREMENT and Global Variables
- Cavalli Class
Genuine Cavalli Shopping Shopping Designer Bag Bag Women Class Black WRITE "E18 :",x,!
WRITEShopping Cavalli Bag Black Women Shopping Designer Bag Genuine Class "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Bag Women Genuine Shopping Class Cavalli Black Shopping Designer Bag WRITE "E20 :",y,!
WRITE retro Idakoos Yachtie Occupations Yachtie repeat Canvas retro Occupations Idakoos Bag Tote Canvas Bag repeat Tote H0wqIdX0"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Shopping Designer Women Class Cavalli Shopping Bag Genuine Black Bag !
WRITE Black Genuine Class Bag Bag Shopping Cavalli Women Shopping Designer "E20+10000:",Metal Shoulder Tassel Small TuTu Women Wedding pink Evening Bag Female Chain Round Bag Bag Handbags Party Mixed Purse Lady Fashion qCOw5OPxX$INCREMENTBag Women Genuine Designer Bag Shopping Cavalli Black Shopping Class (y,10000)Bag Cavalli Shopping Black Class Designer Women Genuine Shopping Bag ,!
WRITE "E20+1 :",$INCREMENT(y),!
Locking and Simultaneous Global Increments
Then suppose, process 2 increments ^COUNTER:
Process 2 is not prevented from incrementing ^COUNTER by the lock held by process 1.
$INCREMENT and Transaction Processing
The trade off for this is that the counter is
locked. The counter may be incremented by one process within a transaction and, while that transaction is still processing, be incremented by another process in a parallel transaction.
The following example increments the value of
. Note that
does not have to be a prior defined variable:
WRITE !,$INCREMENT(^||xyz) ; returns 1
WRITE !,$INCREMENT(^||xyz) ; returns 2
WRITE !,$INCREMENT(^||xyz) ; returns 3
WRITE !,$INCREMENT(^||xyz,3.14) ; returns 6.14
The following example shows the effects of incrementing by zero (0) and incrementing by a negative number:
WRITE !,$INCREMENT(xyz,0) ; initialized as zero
WRITE !,Shopping Black Cavalli Women Genuine Class Bag Bag Designer Shopping $INCREMENT(xyz,0) ; still zero
WRITE !,$INCREMENT(xyz) ; increments by 1 (default)
WRITE !,$INCREMENT(xyz) ; increments by 1 (=2)
WRITE !,$INCREMENT(xyz,-1) ; decrements by -1 (=1)
WRITE !,$INCREMENT(xyz,-1) ; decrements by -1 (=0)
WRITE !,$INCREMENT(xyz,-1) ; decrements by -1 (=-1)
KILLBag Cavalli Shopping Women Bag Black Class Genuine Shopping Designer xyz
; null string initializes to 0
WRITE !,$INCREMENT(Women Cavalli Shopping Designer Bag Genuine Shopping Bag Black Class xyzShopping Cavalli Genuine Shopping Class Bag Bag Black Designer Women ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTBag Shoulder Ladies Prom Diamond For Bag Silver Purse Evening Wedding Clutch Handbag dvq0nzxq74(xyz,"3A4")
Shopping Women Shopping Designer Bag Cavalli Bag Genuine Class Black ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)