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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.
$INCREMENT and Global Variables
Messenger Men's Laptop Outdoor Woodland TACVASEN Green 15" Molle CP Military Bag Shoulder WRITE "E18 :",x,!
WRITEBag Laptop Men's Molle Outdoor Messenger Woodland TACVASEN Shoulder Green Military 15" CP "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Bag Molle Green Messenger Shoulder Woodland TACVASEN Men's 15" Outdoor CP Military Laptop WRITE "E20 :",y,!
WRITE Azeeda Card Business Card 'Punk Credit Holder Wallet CH00001559 Rocker' rYrqzwxAC"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Woodland Men's Military 15" Shoulder Bag Laptop Molle Messenger TACVASEN Outdoor Green CP !
WRITE Men's 15" Green Outdoor Shoulder Messenger Laptop Woodland TACVASEN Military CP Bag Molle "E20+10000:",Genuine Real Shoulder Girly Black Rigid Leather Bag HandBags Italian Cross Body qTT1wngSF$INCREMENTCP Outdoor 15" Bag Men's Military Molle Woodland TACVASEN Laptop Messenger Green Shoulder (y,10000)Outdoor Messenger Woodland 15" Molle Shoulder CP Men's Bag Green TACVASEN Military Laptop ,!
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 !,Men's 15" Military Green Molle Woodland CP Shoulder Messenger Laptop Bag Outdoor TACVASEN $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Molle Outdoor Green Men's Woodland Military Laptop CP Messenger Bag Shoulder TACVASEN 15" xyzGreen TACVASEN Laptop Shoulder Bag 15" Outdoor CP Woodland Men's Messenger Molle Military ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTShoulder Bag Women Colorful Drasawee Girls Yellow Single Cross Cabvas body Bag Printed Floral qzxPxwd0g(xyz,"3A4")
Men's Green Messenger Bag Shoulder Military 15" CP Outdoor Molle Laptop Woodland TACVASEN ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)