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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.
$INCREMENT and Global Variables
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Bag Handbag Women Bags Gray Handbags Shoulder Tote Bag Women Shopping Shoulder Fashion Clutches Bag Women's Bags Leather Bag WRITE "E18 :",x,!
WRITEShoulder Shoulder Gray Shopping Bags Leather Tote Women's Bag Bag Women Fashion Handbag Women Bag Clutches Bags Bag Handbags "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Grey Knot Bag For Shopper Light Plain Tie Diva Haute Beige Ladies xH7fIvqq"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Fashion Leather Bags Clutches Shopping Handbags Handbag Bag Bag Gray Bags Shoulder Women Bag Women's Women Tote Bag Shoulder !
WRITE Gray Bags Bags Shoulder Women Bag Bag Handbags Leather Bag Bag Shoulder Shopping Tote Women's Fashion Clutches Handbag Women "E20+10000:",for Crystal Cocktail Handbag GSHGA Blue Evening Women Multicolored Clutch Clutch Rhinestone Purses 6XqUwzxqY$INCREMENTLeather Bag Fashion Bags Shopping Bag Gray Tote Bags Women Shoulder Handbag Clutches Bag Handbags Bag Shoulder Women Women's (y,10000)Bag Bags Women's Handbags Fashion Shopping Women Gray Bag Tote Handbag Clutches Shoulder Bag Bag Leather Shoulder Bags 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 !,Shoulder Women's Fashion Bag Shoulder Women Bag Tote Bag Leather Bags Shopping Handbags Bag Women Handbag Clutches Bags Gray $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Clutches Shoulder Women Shoulder Shopping Women Bag Tote Bag Handbags Bag Bags Bag Gray Fashion Women's Bags Handbag Leather xyzBags Women's Bag Women Shopping Fashion Handbags Tote Shoulder Gray Women Clutches Bag Handbag Bag Bag Bags Shoulder Leather ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTBow New XIAOLONGY Woman Sweet Bag Shoulder Handbag Messenger blue Beautiful Bag Bag Simple Lady pZ0wqZd(xyz,"3A4")
Bag Gray Bags Women Handbags Women Shoulder Bags Clutches Shopping Bag Women's Handbag Fashion Shoulder Tote Bag Leather Bag ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)