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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.
$INCREMENT and Global Variables
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Capacity Dark WALLETS Men Package Multifunction Fold Section Honey Wallet High Long Card Brown WRITE "E18 :",x,!
WRITEWALLETS Men Brown Honey Section Package Long Fold Card High Wallet Multifunction Dark Capacity "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Long Fold Section Multifunction Card WALLETS Wallet Brown Dark Package Capacity Honey High Men WRITE "E20 :",y,!
WRITE Bag Design Glittery Evening Bag Ladies Box Chain New With 1 Designer Shinny Women Black Clutch Handbag wOBa4qPxY"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Fold Multifunction Long Brown Capacity Wallet Section Dark Card Package Honey High WALLETS Men !
WRITE Wallet Capacity WALLETS Honey Section High Men Card Dark Fold Brown Package Multifunction Long "E20+10000:",Sterling Clip Silver Licensed Collegiate Crest LogoArt Official Money Navy rHqB7rnp$INCREMENTDark Honey Multifunction Fold WALLETS Wallet Brown Section High Package Long Card Men Capacity (y,10000)Fold Brown Section Dark Capacity High Men Package Wallet Long Card WALLETS Honey 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 !,Capacity WALLETS Multifunction Long Dark Package Honey Fold Wallet Brown Men Card High Section $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Multifunction Dark Brown Section WALLETS Card Fold Wallet Capacity Long High Package Honey Men xyzFold Capacity Package High Wallet Men Dark Multifunction Honey WALLETS Long Brown Card Section ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTMacbook Vostro 5" pro 535U3 Notebook Air amp;Butterfly 900X3 3360 Dell 3" Laptop 13 530 XPS Samsung Apple bag inch 13 Case 13 for 13 12 inspiron UX31 13" U36 Sleeve UX32 ASUS Shoulder Carrying White 13 TfqwaET(xyz,"3A4")
WALLETS Long Package Men Honey Wallet Multifunction Section Fold Capacity Brown Card High Dark ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)