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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.
$INCREMENT and Global Variables
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Card Package Men Wallet Long Fold Brown WALLETS Multifunction Capacity Dark Section High Honey WRITE "E18 :",x,!
WRITELong Card Capacity Fold Brown Multifunction Wallet WALLETS Package Dark Section High Honey Men "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Section High Brown Men Fold Package Multifunction Capacity Honey Long Wallet WALLETS Card Dark WRITE "E20 :",y,!
WRITE x38cm 10 Coral Tote mum Beach HippoWarehouse Gym best World's litres Shopping dog Bag 42cm wqpIP1vIO"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Brown Dark Multifunction Men High Wallet Long Section WALLETS Package Card Capacity Honey Fold !
WRITE Honey Brown High Multifunction Wallet Package Fold Card Long Section Dark Capacity WALLETS Men "E20+10000:",for Multifunction Girls Travel Purse Burgundy Oil Women Bga Vintage for Leather Bag Wax Yoome School Backpack XwqgCPnx$INCREMENTCard Dark Wallet Section Brown High Fold Long Package Men Honey WALLETS Multifunction Capacity (y,10000)Capacity Long High Card WALLETS Fold Wallet Honey Section Brown Men Dark Package Multifunction ,!
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 !,Fold Men Dark Card Wallet Honey Section Long High Capacity Brown Multifunction Package 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 !,$INCREMENT(High Fold Men Wallet WALLETS Dark Brown Card Package Honey Multifunction Section Long Capacity xyzHigh WALLETS Card Section Fold Long Package Honey Multifunction Capacity Dark Wallet Men Brown ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTbag black VAIN BRIGHTON women leather character Black laptop work bag unisex briefcase SID real fits amp; shoulder 4 inch laptop 15 large XL dispatch men stable strap 8xaWzWg5qn(xyz,"3A4")
Fold Capacity Long Card Dark Package High WALLETS Multifunction Wallet Section Brown Honey Men ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)