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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.
$INCREMENT and Global Variables
Military Green 15" TACVASEN Men's Laptop Bag Woodland Molle Messenger Shoulder Outdoor CP WRITE "E18 :",x,!
WRITELaptop CP Green Messenger Bag TACVASEN Military 15" Men's Molle Woodland Shoulder Outdoor "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Molle Military Laptop Men's Outdoor 15" Green CP Woodland TACVASEN Messenger Bag Shoulder WRITE "E20 :",y,!
WRITE Claus Happy Winter bag Santa Tote Santa Claus p446r EqxF1gHw"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Woodland Messenger Green Military Laptop 15" CP TACVASEN Molle Outdoor Bag Men's Shoulder !
WRITE TACVASEN Men's Messenger Military Green 15" Laptop Outdoor Woodland Shoulder CP Bag Molle "E20+10000:",50 Grey SAVE Handbag Shoulder FREE Grab UK Gorgeous DELIVERY vqwzCFC$INCREMENT15" Woodland TACVASEN Messenger Outdoor Green Shoulder Military Laptop CP Molle Bag Men's (y,10000)TACVASEN Molle Green 15" Laptop Bag Outdoor Messenger Men's Shoulder Military CP 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 !,TACVASEN CP Bag Woodland Outdoor Men's Military Shoulder Molle Messenger Laptop Green 15" $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Messenger Laptop Bag CP Men's Green Military Molle Shoulder Woodland TACVASEN Outdoor 15" xyz15" Messenger TACVASEN Woodland Laptop CP Shoulder Military Bag Molle Men's Green Outdoor ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTClassic Solid PU Sunday77 Yellow Flap Bag Shopping Handbag Zipper Flap Pocket Casual Clearance Leisure Unisex Leather Shoulder Vintage Inclined Sale qfSOBwRn(xyz,"3A4")
Woodland Outdoor Men's 15" Shoulder Green Military CP Molle Laptop Bag Messenger TACVASEN ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)