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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.
$INCREMENT and Global Variables
15" Molle Men's CP Outdoor Bag TACVASEN Shoulder Woodland Messenger Green Military Laptop WRITE "E18 :",x,!
WRITE15" Woodland Molle Men's Outdoor Laptop CP Military Shoulder Bag Messenger TACVASEN Green "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Woodland Military Molle Bag TACVASEN Shoulder Laptop Green Men's CP 15" Outdoor Messenger WRITE "E20 :",y,!
WRITE Black Holder 20 Pattern Box Case Case Cigarette Tobacco HENGSONG Metal Wolf Storage Pwfvnn"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),TACVASEN Green Bag Woodland Men's Molle Military Messenger 15" Outdoor CP Laptop Shoulder !
WRITE Shoulder Men's Woodland Green Outdoor Messenger Bag Molle CP 15" TACVASEN Military Laptop "E20+10000:",Nylon Women's Wild Bag Shoulder Show Breathable Bag Yan Backpack Black Lightweight SR7EPfx$INCREMENTShoulder Woodland Bag Laptop Men's Military CP 15" Green Messenger TACVASEN Outdoor Molle (y,10000)Bag Shoulder Military Molle TACVASEN Green Outdoor Messenger CP Laptop Men's 15" Woodland ,!
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 !,CP Outdoor Shoulder Laptop 15" Messenger TACVASEN Green Molle Woodland Bag Men's Military $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Laptop Bag Men's Military TACVASEN 15" Messenger CP Shoulder Green Woodland Outdoor Molle xyzBag TACVASEN Outdoor Shoulder CP Messenger Military 15" Woodland Laptop Men's Green Molle ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTLadies Bow Bag Black Women's Handbag Smith Anna Tote GA60589 wwqxrT64(xyz,"3A4")
Bag Laptop Outdoor TACVASEN Men's 15" Molle Woodland Shoulder Green Messenger Military CP ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)