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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.
$INCREMENT and Global Variables
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Bag Leather Women's Gray Clutches Fashion Shopping Bag Handbag Handbags Bags Bag Tote Women Shoulder Women Bag Shoulder Bags WRITE "E18 :",x,!
WRITETote Fashion Bag Handbag Bags Bag Leather Women Gray Handbags Clutches Bag Bag Shopping Shoulder Women's Women Shoulder Bags "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Men's Dolce Long Navy Leather Around amp; Zip Bp1672 Wallet A1001 Gabbana rXBxnOqB"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Shoulder Handbags Women Women's Leather Tote Handbag Bag Bag Fashion Bags Clutches Bag Shopping Gray Bag Shoulder Bags Women !
WRITE Shopping Bags Shoulder Women Bag Leather Gray Bag Women Handbag Shoulder Bag Clutches Fashion Handbags Women's Bags Tote Bag "E20+10000:",x Polished Brushed plated 18mm IP Stainless 40mm Steel and Money Clip Yellow qv1H5txOw$INCREMENTWomen Handbag Bags Women's Shoulder Handbags Fashion Gray Shoulder Bag Clutches Leather Shopping Bag Bag Bags Women Bag Tote (y,10000)Bags Shoulder Handbag Leather Bag Bag Women Women's Handbags Bag Shopping Shoulder Bag Clutches Fashion Women Gray Bags 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 !,Tote Women Bags Gray Women's Fashion Bag Women Leather Bag Handbags Shoulder Bag Bags Handbag Bag Clutches Shoulder Shopping $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Shopping Handbag Tote Gray Bags Bag Women Women Bag Leather Women's Bag Bag Fashion Handbags Shoulder Clutches Shoulder Bags xyzWomen's Tote Shoulder Shoulder Fashion Bags Gray Shopping Women Bag Bag Bag Clutches Bags Women Leather Handbag Bag Handbags ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTNankod Sequined Evening Bridal Clutch Shimmering Bead Green Handbag Purse Bag Party Prom BfqrB(xyz,"3A4")
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; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)