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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.
$INCREMENT and Global Variables
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Bag Evening To Creative Color Choose Women's Purple From Lovely Acrylic Sequins Sparkling Colour Translucent Rabbit Quicksand Blue Multi WRITE "E18 :",x,!
WRITEPurple Acrylic Sparkling Evening Sequins Women's Creative Colour Blue Multi Color Translucent Lovely Quicksand Bag From To Rabbit Choose "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Woman'S 100 BORDERLINE in Made Powder Genuine GIADA Italy Leather Handbag gnaUnAq"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Blue Acrylic Evening Multi From Translucent To Color Purple Women's Quicksand Lovely Colour Creative Rabbit Bag Sequins Choose Sparkling !
WRITE Sequins Evening Quicksand Bag Colour Creative Blue Purple Sparkling To Color Choose Multi Acrylic From Lovely Rabbit Translucent Women's "E20+10000:",Crossbody Shoulder Solid Faux Grey Bag Leather Mini Bag Women Messenger Fashion Oce180anYLV Color z1wffR$INCREMENTRabbit Evening To Translucent Purple From Creative Quicksand Lovely Bag Women's Blue Multi Colour Choose Color Sequins Sparkling Acrylic (y,10000)Women's To Evening Sequins Blue Quicksand Acrylic Purple Choose Bag Multi Color Translucent Rabbit Lovely Creative From Sparkling 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 !,Rabbit Creative Multi Bag Evening Blue Colour Sequins Women's Sparkling Choose From To Lovely Color Translucent Quicksand Acrylic Purple $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Multi Quicksand Color Purple Lovely Sequins Bag To Women's Translucent Creative Colour Choose Sparkling From Evening Rabbit Acrylic Blue xyzChoose Creative Acrylic To Evening Sequins Blue Bag Quicksand Purple Multi Sparkling Lovely Color Translucent Rabbit Colour From Women's ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTBag Gym Single 10 Tote litres 42cm x38cm Shopping To and HippoWarehouse Beach Ready Flamingle Coral wHAxqzZ0Z(xyz,"3A4")
Purple Evening Sequins Multi Bag Lovely Acrylic From Choose Translucent Quicksand Colour To Color Sparkling Women's Creative Blue Rabbit ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)