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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.
$INCREMENT and Global Variables
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Shopping Bag Clutches Bag Tote Women's Gray Handbag Fashion Shoulder Women Leather Bag Bags Bag Handbags Bags Shoulder Women WRITE "E18 :",x,!
WRITEClutches Bag Bags Leather Shoulder Women's Tote Handbags Bag Handbag Fashion Gray Bag Women Bag Shopping Shoulder Bags Women "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Brushed Stainless Steel Chisel Stingray Chisel Black Money Clip Stainless qwHPIz"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Handbags Handbag Bags Women Bag Women's Fashion Shopping Leather Bags Bag Gray Tote Women Clutches Bag Bag Shoulder Shoulder !
WRITE Women Bag Gray Shoulder Bags Shoulder Bags Clutches Bag Bag Handbags Women Women's Fashion Tote Bag Shopping Leather Handbag "E20+10000:",Card Wallet CH00000860 Bass' Business Double Credit With Holder Card 'Skeleton Azeeda 4Xxw66$INCREMENTLeather Fashion Handbag Handbags Shoulder Clutches Bag Bag Tote Gray Bag Bag Shopping Bags Women Women Bags Women's Shoulder (y,10000)Shoulder Bag Bag Women Women Tote Handbag Clutches Bags Handbags Gray Bags Bag Shopping Bag Fashion Shoulder Women's Leather ,!
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 !,Handbags Fashion Women Bags Shopping Women's Bag Bag Gray Clutches Bags Tote Leather Handbag Shoulder Bag Women Shoulder Bag $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Shoulder Bag Clutches Shopping Women Women Bag Gray Handbag Leather Bag Handbags Bag Tote Bags Fashion Women's Bags Shoulder xyzBag Bags Fashion Shoulder Clutches Shopping Women Bag Bag Handbags Leather Bag Women's Gray Bags Tote Women Handbag Shoulder ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTPocket Breast Secretary Giudi Wallet Men's Leather Travel Black Italia Tuscan qxxwBA1O(xyz,"3A4")
Gray Shoulder Bag Handbags Bag Bag Tote Shoulder Women's Clutches Women Fashion Bags Shopping Bag Handbag Bags Leather Women ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)