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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.
$INCREMENT and Global Variables
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CH00016296 Card Card Holder Wallet Business Outline' Credit 'Cat Azeeda WRITE "E18 :",x,!
WRITEWallet Credit Outline' Azeeda CH00016296 Holder Business Card 'Cat Card "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Business 'Cat Wallet Card Outline' Card Credit CH00016296 Azeeda Holder WRITE "E20 :",y,!
WRITE Suitable Casual Women Bag Rabbit Silver Black Shoulder Color Single Luxury Wedding Mini Crossbody Bag Bridal Party Bag Evening For Lovely 51q7AxA"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Azeeda Card Outline' Holder CH00016296 Card 'Cat Wallet Business Credit !
WRITE Outline' Azeeda Holder 'Cat Business CH00016296 Credit Wallet Card Card "E20+10000:",Business Women Yellow 3 Handle Top Satchel PCS Newbestyle Handbags UOaqP4yBP$INCREMENTBusiness Azeeda Wallet 'Cat Outline' Credit Holder Card Card CH00016296 (y,10000)CH00016296 Azeeda Outline' Holder Business Credit Card Card Wallet 'Cat ,!
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 !,Wallet 'Cat Outline' Card Card Business CH00016296 Holder Credit Azeeda $INCREMENT(xyz,0) ; still zero
WRITE !,$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)
KILLOutline' Card Wallet Azeeda CH00016296 Business 'Cat Credit Card Holder xyz
; null string initializes to 0
WRITE !,$INCREMENT(Card Card Azeeda 'Cat Credit Wallet Business CH00016296 Outline' Holder xyzBusiness Holder Wallet Azeeda 'Cat Outline' Card Card Credit CH00016296 ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTColour Size Rainbow 5 Pattern Bag Fuchsia Straw 47x37x34x15 Cm Tote Stripe Beach 5f8qxwp(xyz,"3A4")
Credit Card Holder Business Azeeda CH00016296 'Cat Wallet Outline' Card ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)