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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.
$INCREMENT and Global Variables
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Tooled Hand Guard New Wallet Long States Custom Montana Brown Coast United WRITE "E18 :",x,!
WRITEMontana Coast Tooled United Custom Long Guard Brown Wallet New States Hand "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Coast States Wallet United Tooled New Long Montana Hand Guard Custom Brown WRITE "E20 :",y,!
WRITE Clutch Fashion Bag Bag Handbag Evening Party Women Red Fashion New Elegant Wedding Shoulder for Dinner Package gU1X0qwx"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),United Coast Montana Guard Brown Wallet Tooled States Custom Long New Hand !
WRITE Montana Long Custom Tooled New Brown Coast States Guard Wallet Hand United "E20+10000:",Ladies Col59 Harris Findhorn LB1227 Tote Tweed Authentic Bag Midi AAaq4rZ8w$INCREMENTTooled Custom Brown Guard Hand Wallet Coast United States New Long Montana (y,10000)Custom Coast New Brown Hand Wallet United Montana Guard Long Tooled States ,!
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 !,United States Guard Wallet New Hand Montana Long Tooled Custom Brown Coast $INCREMENT(xyz,0) ; still zero
WRITE !,$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)
KILLBrown Custom States New Wallet Hand United Guard Tooled Long Montana Coast xyz
; null string initializes to 0
WRITE !,$INCREMENT(New Long Hand United Tooled Brown Custom Guard Wallet States Montana Coast xyzStates Wallet Guard Long New Montana Custom Hand Coast Tooled Brown United ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTCream British Cotton Jack Sport Union of Shopping Bag Tote Diving Best vx4qw1f7(xyz,"3A4")
New Long Tooled Brown Custom Wallet Hand Montana United States Coast Guard ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)