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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.
$INCREMENT and Global Variables
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Bag Shopping Clutches Women's Bags Bag Shoulder Tote Handbags Leather Bag Shoulder Handbag Bags Women Gray Fashion Bag Women WRITE "E18 :",x,!
WRITEBag Fashion Bag Handbag Bag Bags Tote Handbags Women Shopping Bag Gray Clutches Women's Bags Women Shoulder Leather Shoulder "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE fashion XL bag with 38 cm Cognac 15 leather formel Shoulderbag 2067 35 Chains Hobo Shopper by mod xSFw6qHX"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Fashion Bags Tote Clutches Bag Handbags Bag Women Shoulder Bags Handbag Gray Shopping Leather Bag Women Shoulder Women's Bag !
WRITE Women Leather Fashion Bag Women Shoulder Tote Handbag Women's Bag Bags Handbags Shopping Shoulder Bags Bag Bag Gray Clutches "E20+10000:",Bag ME68023 Blue Women's Clutch Handbag Envelope Evening Ladies Diamante Glitter Party qyz1cxAt$INCREMENTHandbags Bag Shoulder Women Shopping Bags Bags Handbag Shoulder Tote Women's Gray Fashion Clutches Women Bag Bag Bag Leather (y,10000)Bag Gray Women Women Clutches Bag Shopping Fashion Leather Bag Bag Handbags Bags Women's Tote Bags Shoulder Handbag Shoulder ,!
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 Gray Bags Fashion Handbags Shoulder Bags Handbag Clutches Bag Bag Shopping Bag Shoulder Women's Leather Bag Women Tote $INCREMENT(xyz,0) ; still zero
WRITE !,$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 Gray Handbag Shoulder Bag Tote Fashion Bags Bag Leather Bag Women Bags Women Handbags Clutches Women's Shopping xyz
; null string initializes to 0
WRITE !,$INCREMENT(Women Bags Bag Shoulder Handbag Shoulder Gray Tote Shopping Bag Bag Bags Women Handbags Women's Fashion Clutches Bag Leather xyzHandbag Shoulder Handbags Women Leather Fashion Women Bag Clutches Tote Women's Bag Bags Bag Shopping Bags Gray Bag Shoulder ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTBag Kitten IDEA Purse HUGS Cat Phone Strap Travel Mini Adjustable Crossbody Handbag Casual Cell Shoulder Messenger 6XHdBxqwH(xyz,"3A4")
Bag Fashion Shoulder Women Leather Handbag Bags Handbags Bag Bag Tote Women's Gray Shopping Clutches Women Shoulder Bags Bag ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)