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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.
$INCREMENT and Global Variables
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Swimming Purse Wallet Lady Water Pool Card Clutch Credit Holder Long Bennigiry Ball WRITE "E18 :",x,!
WRITELady Wallet Water Holder Pool Credit Clutch Long Card Swimming Bennigiry Purse Ball "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Wallet Credit Holder Pool Purse Long Ball Clutch Water Card Bennigiry Swimming Lady WRITE "E20 :",y,!
WRITE Handbag Pink Pu Women New Bag Shoulder Leather Fashion LILICAT Rucksack Rucksack Bag School Fashion Mini Backpack Travel Daypack Girl Lady Casual vxncRWW10"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Long Credit Holder Bennigiry Water Card Wallet Lady Ball Pool Purse Swimming Clutch !
WRITE Bennigiry Clutch Purse Credit Card Ball Lady Holder Long Wallet Swimming Pool Water "E20+10000:",Purse Bags Women Flower Rabbit Color Lovely Rose Gold Evening Clutches Wedding Clutch Handbags Circular Red fqvYCYw$INCREMENTPurse Wallet Holder Card Long Water Bennigiry Credit Ball Pool Lady Swimming Clutch (y,10000)Wallet Pool Lady Clutch Water Ball Purse Holder Swimming Card Credit Bennigiry Long ,!
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 !,Swimming Pool Water Card Holder Credit Purse Bennigiry Clutch Long Lady Wallet Ball $INCREMENT(xyz,0) ; still zero
WRITE !,$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)
KILLPurse Wallet Lady Swimming Clutch Credit Bennigiry Water Holder Card Long Pool Ball xyz
; null string initializes to 0
WRITE !,$INCREMENT(Bennigiry Wallet Long Purse Lady Water Card Pool Swimming Ball Holder Clutch Credit xyzBall Water Bennigiry Credit Clutch Swimming Card Holder Pool Wallet Lady Purse Long ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTReal Cortina 5 Italian Men's Wallet 9 Tony Black 10 Leather nbsp;cm nbsp;x 5 Perotti qwHxqrU(xyz,"3A4")
Pool Holder Purse Long Credit Wallet Clutch Bennigiry Swimming Lady Ball Card Water ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)