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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.
$INCREMENT and Global Variables
Woodland Messenger Laptop Military Bag Green Molle 15" Men's Shoulder Outdoor TACVASEN CP WRITE "E18 :",x,!
WRITEMen's TACVASEN Woodland Green Laptop Bag Outdoor Shoulder 15" Molle CP Military Messenger "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
TACVASEN 15" Military Green Woodland Shoulder Men's Outdoor Bag Messenger Laptop Molle CP WRITE "E20 :",y,!
WRITE Longhorns Money Gift and Set Cushion University Cufflinks Clip Texas of UwOxWqEf"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Green Shoulder Military Molle Laptop Bag TACVASEN Messenger 15" Men's CP Woodland Outdoor !
WRITE Woodland Military Men's Green TACVASEN Molle Bag 15" CP Laptop Messenger Shoulder Outdoor "E20+10000:",Handle Accessories Gold Clutch Wedding Gown Ladies Evening Purse Bridesmaid Women Tassel Bag Silk Weddings Evening For Chain xUZpxwqvF$INCREMENTMessenger 15" CP Men's Laptop Green Molle Shoulder Woodland Bag TACVASEN Outdoor Military (y,10000)TACVASEN Shoulder Green Bag Woodland CP 15" Molle Laptop Outdoor Messenger Military 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 !,Military Molle Men's Shoulder Green Laptop 15" Bag TACVASEN CP Woodland Outdoor Messenger $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Men's TACVASEN Laptop CP Military Messenger Woodland Outdoor Bag Green Molle 15" Shoulder xyzTACVASEN 15" Shoulder Outdoor Woodland Men's Molle CP Military Green Bag Laptop Messenger ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTBag Tassels Flower Women Backpack Homyl Retro Vintage Shoulder with Embroidery Bag qwxTgg(xyz,"3A4")
Bag Laptop 15" Outdoor Messenger Green Molle Military TACVASEN Men's Woodland Shoulder CP ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)