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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.
$INCREMENT and Global Variables
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Fold WALLETS Wallet Brown Capacity Long Section Card Dark Honey Package High Men Multifunction WRITE "E18 :",x,!
WRITEHoney Fold Wallet Dark Package Card Brown WALLETS High Multifunction Capacity Long Section Men "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
WALLETS Honey High Package Dark Capacity Multifunction Long Brown Section Men Card Fold Wallet WRITE "E20 :",y,!
WRITE the Rain BAG BAG Singin in Singin TOTE Rain Rain in Singin the in TOTE the RUA11qw"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Dark Section WALLETS Honey Package Multifunction Brown Card Fold Wallet Capacity Long Men High !
WRITE Dark Brown Card Wallet WALLETS High Capacity Honey Long Men Package Multifunction Section Fold "E20+10000:",Women Beige Luxury Purse Handbag Rhinestone Bag Evening bismarckbeer Clutch Party fBwdzfx$INCREMENTHigh Section Dark Fold Men Honey Long Brown Multifunction Card WALLETS Capacity Wallet Package (y,10000)Package Section Capacity WALLETS Men Dark Fold Long Card High Multifunction Honey Wallet Brown ,!
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 !,Section WALLETS Men High Brown Long Card Honey Dark Capacity Wallet Multifunction Fold Package $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Dark Capacity Brown Card Long Honey Package High Wallet Men Section Fold Multifunction WALLETS xyzWallet Brown Package Long Capacity WALLETS Dark Card High Multifunction Men Fold Honey Section ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTwild 42cm she's flower Do 10 suppose litres Black Tote Beach Gym a HippoWarehouse x38cm Bag you Shopping qtXw7(xyz,"3A4")
Long Wallet Dark Honey High Brown Card WALLETS Capacity Fold Men Multifunction Section Package ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)