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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.
$INCREMENT and Global Variables
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Azeeda Business Holder Card Card Credit Wallet 'Flowers' 'Flowers' CH00017403 Azeeda WRITE "E18 :",x,!
WRITECard 'Flowers' CH00017403 Azeeda Holder 'Flowers' Wallet Azeeda Business Credit Card "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Credit Business Wallet Azeeda Azeeda 'Flowers' Card Card CH00017403 Holder 'Flowers' WRITE "E20 :",y,!
WRITE Tskybag Style Womens Bag Bradal Silver Envelope Clutch Ladies Diamante Purse Hand Clutch Bag Evening Party Prom Handbag 1wpr1qUF"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Credit Wallet Card Business Card 'Flowers' Azeeda Azeeda CH00017403 Holder 'Flowers' !
WRITE Holder Card Azeeda Wallet Credit Card 'Flowers' 'Flowers' Business CH00017403 Azeeda "E20+10000:",Briefcase Orciani Men's Men's Orciani Blue PB0014BLU Leather nnq0PYOw$INCREMENTHolder Business Credit 'Flowers' CH00017403 'Flowers' Azeeda Wallet Card Azeeda Card (y,10000)Azeeda CH00017403 Card Credit Card Wallet Azeeda Holder 'Flowers' 'Flowers' Business ,!
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 !,'Flowers' Credit Card Business 'Flowers' Azeeda Azeeda Holder Card CH00017403 Wallet $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Azeeda Business Card Card Azeeda Holder Credit 'Flowers' CH00017403 'Flowers' Wallet xyzCH00017403 Credit Business Wallet Card 'Flowers' Holder Card Azeeda 'Flowers' Azeeda ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTAlice Wonderland Purse in Hatter in Mad Alice Ot6tvr(xyz,"3A4")
CH00017403 'Flowers' Credit Azeeda Business 'Flowers' Card Holder Card Azeeda Wallet ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)