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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.
$INCREMENT and Global Variables
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Women Clutches Tote Handbag Shoulder Women's Bags Bag Bags Bag Women Gray Shopping Bag Leather Bag Shoulder Fashion Handbags WRITE "E18 :",x,!
WRITEHandbags Shoulder Gray Women's Leather Bag Fashion Bags Bag Women Clutches Women Shopping Handbag Bags Tote Bag Shoulder Bag "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Bag Bridal Pleated Evening Party Bags Prom Wedding Satin Nude Clutch Handbag XHgqw"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Gray Bags Leather Shoulder Bag Bag Shopping Women Bag Tote Clutches Handbags Bags Women's Shoulder Bag Fashion Women Handbag !
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WRITE "E20+1 :",$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's Bag Bag Women Leather Bags Gray Shoulder Tote Fashion Shopping Handbag Bag Bags Bag Shoulder Women Handbags Clutches $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Leather Bags Women Bag Bag Shopping Clutches Women Gray Shoulder Bags Bag Tote Women's Handbag Fashion Bag Shoulder Handbags xyzBags Shoulder Women Bags Shopping Bag Gray Handbags Shoulder Clutches Bag Women Fashion Leather Bag Handbag Tote Women's Bag ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTAirblue Women Union Monkey Tote Gifts Bags For Bag Jack Banksy Printed Cotton Shopper Ec47Oq(xyz,"3A4")
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; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)