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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.
$INCREMENT and Global Variables
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Honey Fold Wallet Brown High Long Capacity Section Men Card Dark Package WALLETS Multifunction WRITE "E18 :",x,!
WRITEMen Brown Wallet Package Long Fold Capacity Dark Multifunction Card Honey Section WALLETS High "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Capacity Men Brown Long Honey Dark Multifunction Section WALLETS Card Wallet High Package Fold WRITE "E20 :",y,!
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WRITE "E20-10000:",$INCREMENT(y,-10000),Package Capacity Section Wallet Fold High Multifunction Card Dark Brown Honey Long WALLETS Men !
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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 !,Dark High Card Brown Wallet Fold WALLETS Long Honey Capacity Package Section Multifunction Men $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Capacity Honey WALLETS Multifunction Package Card Wallet Long Section Men Dark High Fold Brown xyzSection Brown Package Wallet Men Fold Capacity WALLETS Honey Long Multifunction Card Dark High ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTwith Blue Charm Bag BOHO Pastel Chic Women's Messenger Grey Purposefull Light Design Black Strap Adjustable Tassel Blue Light Beige Pink tq7FWw(xyz,"3A4")
Card Brown Men Long Section Wallet WALLETS Honey Multifunction Capacity Package Dark Fold High ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)