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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.
$INCREMENT and Global Variables
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Clutches Bag Handbags Handbag Tote Women's Women Bag Gray Shopping Women Bags Fashion Shoulder Shoulder Bag Bags Bag Leather WRITE "E18 :",x,!
WRITEWomen Bags Bag Shoulder Fashion Handbags Handbag Tote Shoulder Shopping Women Bag Gray Women's Bags Bag Leather Clutches Bag "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Money Cufflinks Gold Set Engraved Flag Hungary Gift tone Clip ZIxRctO"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Women Shoulder Shoulder Clutches Handbags Tote Fashion Leather Bag Handbag Women's Women Bags Bag Bag Bag Bags Gray Shopping !
WRITE Women's Tote Fashion Clutches Women Shoulder Leather Bag Bags Bag Bags Women Handbag Shopping Shoulder Handbags Gray Bag Bag "E20+10000:",Light Domybest Large Capacity Mom Baby Bag Tote 4pcs Bags Women Shoulder Bag Brown Set q7qrRW4wS$INCREMENTBag Bag Handbag Women's Tote Shopping Women Shoulder Leather Bag Bag Shoulder Women Fashion Bags Handbags Bags Gray Clutches (y,10000)Shoulder Clutches Women Shopping Bags Handbag Handbags Bag Bag Fashion Bags Tote Shoulder Women Gray Bag Leather Bag Women's ,!
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 !,Tote Shoulder Women Leather Bags Handbag Fashion Gray Handbags Women's Shopping Bag Bag Shoulder Clutches Bag Women Bags 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 !,$INCREMENT(Bags Handbag Bags Shoulder Women Shoulder Tote Handbags Women's Bag Bag Women Leather Gray Fashion Clutches Shopping Bag Bag xyzHandbag Fashion Shoulder Women Bag Bag Leather Women's Bags Gray Bag Shoulder Handbags Women Shopping Bags Bag Tote Clutches ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTPouch Waist White Phone Everpert Belt Pack Shoulder Women Leather Crossbody Handbags w5CqCYa(xyz,"3A4")
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; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)