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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.
$INCREMENT and Global Variables
Messenger 15" CP Woodland Laptop Molle Bag Outdoor TACVASEN Green Military Men's Shoulder WRITE "E18 :",x,!
WRITEMen's TACVASEN Bag Green Outdoor Laptop CP Shoulder Military 15" Woodland Messenger Molle "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
TACVASEN Laptop Men's Shoulder CP Bag Woodland Outdoor Green Military Molle Messenger 15" WRITE "E20 :",y,!
WRITE Jeans Leisure Messenger Pepe Jeans Backpack Messenger Backpack Grey Pepe Leisure wfqPYTU"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Green Woodland Laptop Molle Bag Military CP Messenger TACVASEN Men's Outdoor 15" Shoulder !
WRITE Men's Woodland Messenger Molle Outdoor CP 15" Bag Laptop Military Shoulder Green TACVASEN "E20+10000:",Evening Party Bag Satin Crystal Bridal Oval Evening Navy Shaped Rouched Clutch Handbag Wedding vgqqHAzfx$INCREMENTShoulder Woodland 15" Men's CP TACVASEN Military Laptop Molle Messenger Green Outdoor Bag (y,10000)TACVASEN Shoulder Men's Green Molle Woodland Laptop Outdoor CP Messenger 15" Bag Military ,!
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 !,Military Molle Shoulder Messenger Laptop Bag Woodland TACVASEN Outdoor CP Men's 15" Green $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Military Green Outdoor 15" Bag CP TACVASEN Molle Shoulder Men's Woodland Laptop Messenger xyzMen's 15" Outdoor Shoulder CP Woodland TACVASEN Messenger Green Military Bag Laptop Molle ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTClutches Messenger Coin VEMOW Tote Crossbody Phone Women Bag Bags Strap Bags Girl Handbags Anti Purse Backpacks Pink Theft Laser Shoulder Ring Hasp Bag Cover Vintage Purses Satchel XUgwd(xyz,"3A4")
Molle Shoulder Messenger Outdoor Woodland Green Men's Military 15" TACVASEN CP Laptop Bag ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)