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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.
$INCREMENT and Global Variables
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Bag Shopping Women Clutches Bag Tote Gray Bags Bag Handbag Handbags Bags Fashion Shoulder Leather Shoulder Bag Women's Women WRITE "E18 :",x,!
WRITEFashion Bag Women's Tote Shopping Gray Bags Clutches Women Leather Bag Women Bag Bag Bags Handbag Handbags Shoulder Shoulder "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Tote For 518 Her Bag Size Quality Small Handbags Holiday Cute Women's Olive LeahWard Leather Faux TvqF88"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Women Gray Shoulder Shopping Bags Bag Handbags Women Bags Handbag Clutches Bag Fashion Bag Leather Bag Shoulder Women's Tote !
WRITE Bag Shopping Leather Bags Gray Handbag Women's Clutches Tote Bag Bag Bags Bag Fashion Shoulder Women Women Handbags Shoulder "E20+10000:",L Black x Satchel cm 83126 Negro 43x30x11 W Women’s H Refresh vFgOq$INCREMENTBags Bags Tote Bag Women Bag Women Women's Clutches Leather Handbag Bag Bag Fashion Gray Handbags Shoulder Shoulder Shopping (y,10000)Bag Bag Gray Handbags Shoulder Clutches Fashion Shopping Shoulder Women Women Bag Bags Bag Women's Tote Leather Bags Handbag ,!
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 !,Women Shoulder Bags Shopping Fashion Clutches Gray Women's Shoulder Tote Bag Handbag Bag Bag Leather Bag Handbags Bags Women $INCREMENT(xyz,0) ; still zero
WRITE !,$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)
KILLBag Shoulder Bags Tote Handbags Shopping Women Leather Bag Shoulder Handbag Clutches Women Gray Bag Bags Women's Fashion Bag xyz
; null string initializes to 0
WRITE !,$INCREMENT(Shoulder Fashion Women Shopping Shoulder Bags Leather Women's Bag Tote Gray Bag Bag Bags Handbag Bag Women Clutches Handbags xyzWomen Handbag Bags Gray Shopping Women's Bag Women Shoulder Fashion Handbags Tote Leather Bag Bag Bag Bags Clutches Shoulder ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTBag Champagne Style Vintage Handbag Wedding Dark Evening Party JAGENIE Clutch Floral Beaded green Prom Purse BYwqZ(xyz,"3A4")
Bag Clutches Bags Bag Women's Leather Gray Tote Bag Bags Shoulder Women Shoulder Women Handbags Shopping Fashion Bag Handbag ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)