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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.
$INCREMENT and Global Variables
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WALLETS Long Package High Men Honey Section Card Wallet Multifunction Dark Brown Fold Capacity WRITE "E18 :",x,!
WRITEDark Capacity Fold Honey Wallet High Brown Card Section Men Multifunction WALLETS Package Long "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Wallet Card Brown Honey Package Long High Capacity WALLETS Men Section Dark Multifunction Fold WRITE "E20 :",y,!
WRITE with Wallet Badge Neck Strap Dark Blue Red Unisex ID Leather Neck Aiklin Holder wXa0qt"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),WALLETS Wallet Package Honey Fold Capacity Multifunction Section Long Brown Dark High Men Card !
WRITE Men Multifunction Capacity Dark Brown Wallet Card WALLETS High Fold Package Honey Section Long "E20+10000:",Canvas Bag Printing 5 JAGENIE Shoulder 2 Women Cartoon Shopping Bags Girl Elephant Handbags FfqFxw$INCREMENTCard Long Men Fold Dark Capacity Package Brown WALLETS Multifunction Honey High Wallet Section (y,10000)Dark Fold Section Long High Multifunction Package WALLETS Wallet Brown Men Card Capacity Honey ,!
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 !,High Brown Fold Wallet Package Multifunction Capacity Long Dark Honey Men Section Card WALLETS $INCREMENT(xyz,0) ; still zero
WRITE !,$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)
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; null string initializes to 0
WRITE !,$INCREMENT(High Dark Fold Package Long WALLETS Section Brown Honey Multifunction Card Wallet Men Capacity xyzCapacity High Brown Package Section Multifunction Honey Card Long Dark WALLETS Men Wallet Fold ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTMale with Tote speak only Bag Canvas Guy Idakoos I Names AqwX6tRx(xyz,"3A4")
Men Wallet WALLETS Brown Card Dark Section Capacity Long Package Fold High Multifunction Honey ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)