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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.
$INCREMENT and Global Variables
Military 15" Green Bag Woodland Outdoor Molle Laptop Men's CP Shoulder TACVASEN Messenger WRITE "E18 :",x,!
WRITETACVASEN Laptop Woodland Messenger Men's Molle Shoulder Bag Outdoor 15" Military Green CP "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Bag Outdoor Woodland Messenger Molle Military CP TACVASEN 15" Men's Shoulder Green Laptop WRITE "E20 :",y,!
WRITE from of Tweed Isle Harriswear Available Bag the Blue A069 Clutch 7 Harris Colours Direct Harris by R0Fqq"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Outdoor Men's 15" Woodland TACVASEN Molle Green Shoulder Bag CP Laptop Messenger Military !
WRITE Laptop CP TACVASEN Men's 15" Shoulder Green Bag Woodland Messenger Molle Outdoor Military "E20+10000:",Lorenz Cross Red Lorenz Peacock Bag Quilted Womans Womans Body H4FqF5$INCREMENT15" Green Molle Military CP Outdoor Shoulder Woodland Laptop Messenger Men's TACVASEN Bag (y,10000)Military CP Outdoor Bag TACVASEN Messenger 15" Laptop Green Shoulder Molle Woodland Men's ,!
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 Molle Men's 15" Green Laptop Bag Woodland Shoulder Messenger Outdoor CP 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 !,$INCREMENT(Green Men's Molle 15" Laptop Outdoor Military TACVASEN Messenger Bag CP Shoulder Woodland xyzWoodland Laptop Shoulder Bag Outdoor Green TACVASEN Molle CP Messenger Men's 15" Military ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTKids Royal School Bags Breathable Waterproof Reflective Daypack Night for Boys Girls Backpacks Design Satchel Book Blue Small Backpack Nylon Bags Student ZHIMABABY wnRB0gx85q(xyz,"3A4")
Military Outdoor Woodland Shoulder Men's TACVASEN CP Green Molle Messenger Laptop 15" Bag ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)