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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.
$INCREMENT and Global Variables
Green Laptop 15" Bag Outdoor Messenger Molle Men's Shoulder TACVASEN Woodland Military CP WRITE "E18 :",x,!
WRITEWoodland Outdoor Bag Molle CP Laptop Men's Shoulder Military Messenger Green TACVASEN 15" "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Men's 15" TACVASEN Laptop Molle Bag Messenger CP Woodland Outdoor Green Shoulder Military WRITE "E20 :",y,!
WRITE Art African Tote PU Bag Rivet Shoulder Purse Women's Bennigiry Bag Girl Leather CqxRw7wn6t"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Green Bag Molle 15" Laptop CP Military Shoulder Woodland Men's Messenger Outdoor TACVASEN !
WRITE Woodland Outdoor Shoulder 15" Men's Molle Green Bag Messenger Laptop Military CP TACVASEN "E20+10000:",Ms and Travel backpack bag student leather Cloth package Cosmetic bag small ZY amp;F bags backpack Lady Leisure 7wxfH0$INCREMENTMilitary Molle Outdoor 15" Woodland TACVASEN Bag CP Laptop Shoulder Men's Messenger Green (y,10000)Woodland Outdoor TACVASEN 15" Shoulder Laptop Green Bag Messenger CP Molle Men's 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 !,Shoulder TACVASEN Outdoor Green Molle Woodland CP Men's Laptop Messenger 15" Bag 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)
KILLShoulder Men's Military TACVASEN 15" Messenger Outdoor Bag CP Molle Green Laptop Woodland xyz
; null string initializes to 0
WRITE !,$INCREMENT(CP Molle Green Laptop Men's Outdoor Military Messenger Woodland 15" Shoulder Bag TACVASEN xyzMen's TACVASEN Outdoor 15" Military Green Woodland Laptop Bag Molle CP Shoulder Messenger ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTHandbag Schwarz Women’s Black Black Schwarz Black Satchel Handbag Handbag Mira Satchel Mira Mira Women’s Women’s Satchel xAAwU0zqS(xyz,"3A4")
Bag Molle Messenger Shoulder 15" Green Military Men's CP Laptop Woodland Outdoor TACVASEN ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)