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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.
$INCREMENT and Global Variables
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Genuine Bi Anchor Men's Chevron Personalized Wallet Leather amp; fold WRITE "E18 :",x,!
WRITEBi Chevron Genuine Men's Wallet Leather amp; Personalized Anchor fold "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Bi Chevron Genuine Leather fold Personalized Men's Anchor Wallet amp; WRITE "E20 :",y,!
WRITE Bag Envelope Fuchsia Plain Fuchsia Suede amp;G Clutch H Faux n4YOqTIn"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),fold Anchor Chevron Men's Personalized Wallet Bi Leather Genuine amp; !
WRITE Bi Chevron Anchor Personalized Leather Wallet Genuine Men's fold amp; "E20+10000:",Eddany chick Skateboarding Tote Eddany Canvas Skateboarding Bag chick BxgwwqvE$INCREMENTfold amp; Genuine Men's Chevron Bi Leather Wallet Personalized Anchor (y,10000)Personalized fold Wallet Leather Chevron amp; Men's Bi Genuine Anchor ,!
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 !,Personalized amp; fold Men's Anchor Wallet Genuine Bi Leather Chevron $INCREMENT(xyz,0) ; still zero
WRITE !,$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)
KILLWallet Chevron Personalized Anchor Men's Bi Leather fold amp; Genuine xyz
; null string initializes to 0
WRITE !,$INCREMENT(Wallet Bi Men's Anchor amp; Leather fold Chevron Genuine Personalized xyzPersonalized Men's Genuine Anchor Bi Leather fold Wallet amp; Chevron ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTkilled HippoWarehouse Bag 10 head you but Natural 42cm Tote i've I look Gym calm times litres Beach three my may x38cm in Shopping rqrTz(xyz,"3A4")
Chevron Bi Anchor Personalized Wallet fold Leather Men's Genuine amp; ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)