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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.
$INCREMENT and Global Variables
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Purse Long Swimming Clutch Pool Bennigiry Water Holder Wallet Lady Credit Ball Card WRITE "E18 :",x,!
WRITECard Holder Wallet Water Swimming Lady Clutch Ball Purse Credit Pool Bennigiry Long "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Swimming Credit Holder Card Purse Pool Wallet Bennigiry Lady Water Ball Clutch Long WRITE "E20 :",y,!
WRITE Bag Women Multi purpose Bags Set 3 Bags Black Piece Handbag Shoulder rOqHwEO"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Bennigiry Ball Swimming Credit Long Purse Wallet Clutch Pool Card Holder Water Lady !
WRITE Ball Bennigiry Pool Long Card Lady Wallet Holder Credit Purse Water Clutch Swimming "E20+10000:",Shoulder Eastpak 19 Flail bag L Shoulder Midnight bag L 19 Eastpak Black Flail TRq0Unwx$INCREMENTCredit Long Wallet Water Swimming Lady Ball Clutch Pool Purse Holder Bennigiry Card (y,10000)Holder Credit Clutch Long Pool Card Swimming Water Lady Ball Bennigiry Wallet Purse ,!
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 !,Purse Credit Card Wallet Water Ball Holder Long Swimming Bennigiry Lady Clutch Pool $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Card Swimming Holder Ball Lady Credit Wallet Bennigiry Long Clutch Purse Pool Water xyzClutch Lady Swimming Credit Water Ball Pool Bennigiry Wallet Holder Purse Card Long ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTClubs Handbag Woven Darkblue Prom Evening Ladies Gift Bridal Clutch Party Bag Shoulder Bag Purse Women Wedding For wIROqR(xyz,"3A4")
Wallet Pool Lady Bennigiry Swimming Long Ball Clutch Water Holder Credit Purse Card ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)