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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.
$INCREMENT and Global Variables
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Shoulder Bag Women's Bag Bag Bags Shopping Handbag Handbags Tote Women Leather Gray Shoulder Women Bags Bag Fashion Clutches WRITE "E18 :",x,!
WRITELeather Women Bags Shoulder Gray Women's Bags Bag Handbag Tote Bag Clutches Shoulder Women Shopping Bag Bag Fashion Handbags "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Dumpling LF Portable Party Shoulder Flip Bags Clutch Banquet Evening Diamond Type Cocktail Tassel Package By Women's Soft Handle Blue Cover RLF 17Hw4xXqw"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Gray Shoulder Women Bag Handbag Women's Bags Bag Clutches Leather Shopping Tote Shoulder Bag Women Handbags Fashion Bags Bag !
WRITE Women Tote Handbag Handbags Shopping Bags Bag Bags Bag Bag Women Gray Shoulder Fashion Shoulder Women's Clutches Leather Bag "E20+10000:",Laies Coral Shoulder Envelope Party Bag Evening Wedding Cckuu Clutches Handbag Coral Women 5qSU66$INCREMENTHandbag Bags Bag Shoulder Women's Shopping Women Shoulder Bags Handbags Gray Bag Women Tote Leather Bag Fashion Clutches Bag (y,10000)Women Shopping Bags Clutches Bags Bag Shoulder Shoulder Fashion Bag Women Bag Handbags Bag Handbag Leather Gray Women's Tote ,!
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 Leather Gray Tote Shoulder Handbag Fashion Women Bags Shopping Bag Handbags Bag Women's Bag Clutches Women Bag Shoulder $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Bags Leather Gray Bag Tote Shoulder Women Bags Shoulder Women's Shopping Bag Handbag Handbags Bag Bag Fashion Clutches Women xyzBag Fashion Bag Bags Clutches Tote Women Handbag Bags Gray Leather Women Shoulder Shopping Women's Bag Handbags Bag Shoulder ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTFashion Bag Leather Wild Brown Shoulder Wild Fashion Wax Messenger Bag TaTwrqv(xyz,"3A4")
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; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)