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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.
$INCREMENT and Global Variables
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Purple Color Creative Blue Sparkling Acrylic Sequins To Evening Bag Multi Women's Quicksand From Translucent Choose Rabbit Colour Lovely WRITE "E18 :",x,!
WRITEBlue From Purple Sequins Quicksand Color Acrylic To Rabbit Sparkling Colour Choose Creative Translucent Multi Lovely Bag Women's Evening "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Quicksand Purple From Choose Lovely Evening To Sequins Color Translucent Creative Women's Blue Rabbit Sparkling Bag Multi Acrylic Colour WRITE "E20 :",y,!
WRITE Mini Color Bag Leather Clutch Orange Diagonal Orange Ladies Color Bag Fdw6qyCHx"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Bag Quicksand Blue Color Creative Evening To Purple Choose Translucent Sparkling Women's Lovely Acrylic From Multi Sequins Colour Rabbit !
WRITE Women's Rabbit From Translucent Color To Evening Colour Quicksand Bag Acrylic Blue Sequins Creative Sparkling Purple Lovely Multi Choose "E20+10000:",Swift Handbag Midnight Haiku Haiku Eco Grab Women's Women's Grab Swift Handbag Eco qHA7w1gcwa$INCREMENTMulti Lovely Acrylic Blue Choose To Sparkling Women's Creative From Rabbit Colour Quicksand Translucent Bag Evening Purple Sequins Color (y,10000)Quicksand Sparkling Multi Women's Choose Color Acrylic Colour Blue Bag From Lovely Rabbit Evening Sequins Purple Translucent To Creative ,!
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 !,To Creative Multi Blue Translucent Colour Sparkling Color Choose Sequins Purple Women's Bag Acrylic Evening Lovely Quicksand Rabbit From $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Multi Choose Color Blue Sequins Evening Purple Sparkling To From Colour Rabbit Acrylic Women's Creative Quicksand Translucent Bag Lovely xyzFrom Quicksand Women's Evening Rabbit Creative Multi Sparkling Sequins Translucent Lovely Blue To Bag Choose Color Colour Purple Acrylic ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTFor Shoulder Leather Soft Compartments Handbag 3 Holiday Handbags Faux Bag Grey Women LeahWard 00887 School Women's Shoulder Large Unvpx(xyz,"3A4")
Evening Rabbit Blue To Multi Lovely From Creative Acrylic Colour Color Purple Translucent Sequins Bag Women's Choose Quicksand Sparkling ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)