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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.
$INCREMENT and Global Variables
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Bag Bag Bag Bags Gray Women Women's Bag Clutches Shoulder Fashion Handbag Handbags Bags Women Shopping Shoulder Tote Leather WRITE "E18 :",x,!
WRITEShoulder Fashion Handbag Bag Bags Shopping Women Shoulder Leather Bags Women Handbags Gray Bag Clutches Women's Bag Bag Tote "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Buckle Satchel Womens College Girly School Black Mini Floral HandBags Cross Canvas Body xqHS0"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Bags Handbag Bag Bags Women Women Bag Handbags Shopping Clutches Shoulder Leather Women's Fashion Shoulder Gray Tote Bag Bag !
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WRITE "E20+1 :",$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 !,Fashion Handbag Bags Bag Women Bag Shoulder Shopping Shoulder Women's Bags Handbags Gray Women Clutches Bag Leather Bag Tote $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Handbag Bag Bag Women Shoulder Handbags Fashion Women's Bag Clutches Tote Gray Bag Bags Women Shoulder Bags Shopping Leather xyzHandbag Shopping Shoulder Clutches Bags Women Leather Bags Handbags Tote Women Shoulder Bag Fashion Bag Bag Women's Gray Bag ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTPlatypus' CH00009187 Holder Azeeda Card Wallet 'Duckbilled Credit Card Business 6qRP8(xyz,"3A4")
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; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)