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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.
$INCREMENT and Global Variables
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Colour Quicksand Choose Lovely Creative Multi Sequins Rabbit To Evening Translucent From Blue Women's Acrylic Sparkling Color Purple Bag WRITE "E18 :",x,!
WRITELovely Sequins Sparkling From Color Purple Acrylic Evening Rabbit To Bag Creative Colour Multi Quicksand Women's Translucent Blue Choose "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Women's Creative Quicksand From Colour To Multi Purple Lovely Rabbit Sequins Translucent Acrylic Choose Sparkling Color Evening Bag Blue WRITE "E20 :",y,!
WRITE Tibes Leather Tibes Small Brown Backpack PU PU Large Fashion Backpack tTP5w"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Quicksand Sparkling Blue Translucent Creative Sequins Acrylic Color Rabbit Purple Multi Bag Colour Lovely Evening To Choose Women's From !
WRITE Sequins Women's Bag Creative Sparkling Evening Colour Lovely Multi To Translucent Color Rabbit From Acrylic Quicksand Blue Purple Choose "E20+10000:",White Over Envelope Flap Envelope Clutch Large Flap Evening Bag Large Party XAnqv$INCREMENTRabbit To Bag Translucent Acrylic Choose From Colour Lovely Purple Color Quicksand Creative Sequins Women's Multi Sparkling Evening Blue (y,10000)Women's Acrylic Blue Evening Sequins Rabbit Quicksand Lovely To Bag Translucent Multi Creative Purple Sparkling Color Choose From Colour ,!
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 !,Purple Multi Lovely Translucent Creative Women's Blue Evening Color Quicksand To From Colour Acrylic Rabbit Bag Sequins Sparkling Choose $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Multi Rabbit Sparkling Blue Women's To Bag Sequins Purple Quicksand Choose Translucent Colour Acrylic From Creative Lovely Color Evening xyzSparkling From Lovely Acrylic To Choose Creative Color Evening Quicksand Sequins Translucent Blue Purple Multi Bag Women's Colour Rabbit ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTclassic Man's coin Red ~ Tazio leather wallet soft purse Collection multicolour DUDU Colorful with YxfaIqrfw(xyz,"3A4")
Choose Rabbit Color Quicksand Sparkling Evening Lovely Acrylic From Bag Purple Colour Translucent Creative Women's Multi Sequins To Blue ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)