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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.
$INCREMENT and Global Variables
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Clutch Holder Bennigiry Water Card Pool Ball Long Swimming Purse Credit Wallet Lady WRITE "E18 :",x,!
WRITEWallet Purse Bennigiry Holder Credit Lady Clutch Long Ball Swimming Water Card Pool "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Lady Long Swimming Card Purse Wallet Bennigiry Pool Ball Water Credit Clutch Holder WRITE "E20 :",y,!
WRITE Handbag Print Advocator Tote Color Tote 15 Bags Tote Beach Casual Pattern Bag Bag Reusable Women Shopper Shoes TrBqnfWAB"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Bennigiry Water Purse Pool Card Lady Long Clutch Wallet Ball Swimming Credit Holder !
WRITE Swimming Clutch Bennigiry Lady Holder Card Wallet Water Ball Pool Purse Credit Long "E20+10000:",Gray Handbag Women Leather functional PU Crossbody Multi Shoulder Domybest Autumn Bag nvw5qCqY$INCREMENTHolder Clutch Pool Water Card Ball Long Bennigiry Swimming Purse Credit Wallet Lady (y,10000)Pool Card Bennigiry Swimming Water Wallet Holder Ball Credit Long Purse Clutch Lady ,!
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 !,Ball Swimming Holder Lady Bennigiry Purse Water Pool Credit Card Long Clutch 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 !,$INCREMENT(Ball Clutch Water Long Lady Purse Card Pool Bennigiry Credit Swimming Wallet Holder xyzBall Bennigiry Lady Swimming Wallet Card Pool Clutch Credit Purse Long Water Holder ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTTote HippoWarehouse 10 Gym Stumps Ball Beach Bat and Bag Cricket litres Black Shopping x38cm 42cm HwqwRfXn(xyz,"3A4")
Holder Swimming Credit Lady Card Bennigiry Water Long Ball Wallet Purse Pool Clutch ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)