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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.
$INCREMENT and Global Variables
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Acrylic Choose Sequins Quicksand Color Women's Creative Blue Bag Sparkling From Rabbit Lovely Evening Colour Translucent Multi Purple To WRITE "E18 :",x,!
WRITEBlue Bag Translucent Lovely To Purple Acrylic Evening Quicksand Sequins Women's Choose Color Colour From Creative Rabbit Multi Sparkling "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Color From Lovely Sparkling Creative Multi To Translucent Purple Acrylic Women's Sequins Rabbit Quicksand Evening Bag Colour Blue Choose WRITE "E20 :",y,!
WRITE Pink £35 Leather COLLECTION amp; Slouchy Ex amp;S RRP Spencer Bag Marks Shopper Faux M Pale T016109Q 8fWZa"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Acrylic Rabbit Quicksand Creative Sparkling Sequins Blue To Multi Women's Purple Colour Lovely Bag Color Translucent From Evening Choose !
WRITE Creative Lovely Sequins Translucent Bag Colour Color Rabbit Sparkling From To Quicksand Purple Multi Choose Blue Acrylic Evening Women's "E20+10000:",Grey Fits Theft Bag Anti Charging with Travel Laptop Port Women 6 Backpacks Backpack ONSON Black Men USB amp; Students Laptop Inch Headphone for amp; Notebook 15 Waterproof Interface wxpqHE0$INCREMENTBag Evening Colour Blue Rabbit Women's Quicksand Choose To From Multi Lovely Sequins Sparkling Acrylic Color Creative Translucent Purple (y,10000)Evening Women's Rabbit Colour Bag Acrylic Blue Choose To Sparkling Color Translucent From Quicksand Lovely Multi Creative Sequins Purple ,!
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 !,Quicksand Evening Translucent Lovely Sparkling To Blue Sequins Color From Choose Acrylic Women's Rabbit Creative Multi Purple Bag Colour $INCREMENT(xyz,0) ; still zero
WRITE !,$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)
KILLChoose Evening Multi Translucent Blue Quicksand Colour From Color Purple Rabbit Sparkling Bag Acrylic Women's To Creative Lovely Sequins xyz
; null string initializes to 0
WRITE !,$INCREMENT(From To Choose Evening Color Women's Sparkling Translucent Bag Quicksand Rabbit Sequins Acrylic Multi Creative Purple Colour Blue Lovely xyzQuicksand Creative Blue Evening Acrylic Lovely Color From Bag Translucent Colour Choose To Purple Sequins Rabbit Multi Sparkling Women's ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTCard Business Wallet Azeeda CH00005707 Card Credit Holder Cubes' 'Sugar 4PtxqtOw(xyz,"3A4")
Rabbit From Acrylic Translucent Lovely Sparkling Bag Choose Sequins Quicksand Multi Colour Purple Color Evening Creative Women's To Blue ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)