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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.
$INCREMENT and Global Variables
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Shoulder Women Fashion Tote Bag Bag Bag Leather Clutches Bags Bags Women's Handbag Shoulder Bag Shopping Gray Handbags Women WRITE "E18 :",x,!
WRITEShopping Clutches Bags Bags Bag Handbags Leather Women's Fashion Women Bag Bag Gray Bag Shoulder Handbag Shoulder Women Tote "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Soft Leather Large VANCOO PU Bag Handbags Women's Vintage Shoulder Lady Tote and Black Style HwHxXqZAB"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Women Gray Shopping Bag Clutches Leather Tote Bags Women Shoulder Bag Bag Women's Handbag Bags Handbags Bag Fashion Shoulder !
WRITE Handbags Women Handbag Shoulder Gray Bag Fashion Bags Bag Women's Leather Bag Tote Shopping Bag Shoulder Women Bags Clutches "E20+10000:",in Handbags Shoulder 1 Pink Bag Beg Bag Adjustable Leather Bag Tote PU Swiftswan 4 Sling 85q67$INCREMENTGray Shoulder Shoulder Bags Bag Women Handbag Leather Women's Handbags Women Bags Tote Fashion Bag Shopping Bag Clutches Bag (y,10000)Bag Bag Bag Bags Clutches Leather Bags Shoulder Shopping Gray Handbag Women's Handbags Tote Fashion Shoulder Bag Women Women ,!
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 !,Bags Bag Fashion Bags Bag Handbag Leather Women's Women Handbags Bag Shoulder Gray Tote Women Shoulder Bag Clutches Shopping $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Handbag Bags Bag Women's Shoulder Women Shoulder Shopping Fashion Handbags Tote Bags Bag Women Bag Leather Bag Clutches Gray xyzLeather Bag Handbag Gray Women Bag Tote Women Bags Shoulder Handbags Shopping Fashion Bags Bag Bag Clutches Women's Shoulder ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTBag 42cm Eat Sleep Tote Dance litres 10 HippoWarehouse Shopping Beach Classic Repeat Red x38cm Gym d4z8qdwSFx(xyz,"3A4")
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; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)