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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.
$INCREMENT and Global Variables
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for Daily Bag Tote Summer Shopping Durable Teacher Color Advocator Work Canvas Print Bag Handles Tote Bags 1 Beach Tote WRITE "E18 :",x,!
WRITETote Bag Shopping Color Bag Summer Tote Durable Advocator Beach Print Bags for 1 Handles Work Teacher Canvas Daily Tote "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Tote Handles Teacher Shopping Work Bags Tote Tote Advocator 1 Canvas Daily Color Beach Print Bag Bag Summer Durable for WRITE "E20 :",y,!
WRITE Zac Zac Zac Posen Belay Black Black Zac Posen Leather Bag Bucket fqrfHx"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Daily Summer Advocator Work Handles Print Tote Color Canvas Tote Tote Shopping Durable Bag 1 Bags for Beach Teacher Bag !
WRITE Canvas Teacher Bag Tote 1 Advocator Work Summer Bags Bag Handles Tote Shopping for Daily Print Beach Tote Color Durable "E20+10000:",Tote Princess White Shopping HippoWarehouse Beach 10 litres 42cm Bag Gymnastics x38cm Gym PpEanEwx$INCREMENTBag Beach 1 Daily for Work Tote Color Bags Canvas Print Handles Bag Tote Summer Durable Shopping Tote Advocator Teacher (y,10000)Handles Durable 1 Daily Tote Tote Print Canvas Beach for Teacher Summer Work Bags Advocator Shopping Bag Tote Color Bag ,!
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 !,Work Beach Tote for Tote Shopping Handles Color Bag Print Summer Daily 1 Canvas Advocator Teacher Bag Tote Bags Durable $INCREMENT(xyz,0) ; still zero
WRITE !,$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)
KILLfor Tote Bag Teacher Handles 1 Tote Shopping Bag Advocator Color Durable Tote Summer Print Bags Work Beach Canvas Daily xyz
; null string initializes to 0
WRITE !,$INCREMENT(Print 1 Work Daily Tote Bag Durable for Tote Teacher Bags Shopping Beach Handles Canvas Tote Bag Summer Color Advocator xyzDurable Handles Work Summer for Advocator Shopping Beach Tote Bag Bags Color Canvas Teacher Daily Tote Print Tote Bag 1 ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTPasscase Nappa Adolfo Adolfo Men's Blocking Smooth Men's Black RFID 4p0xqH(xyz,"3A4")
Tote Canvas Work Bag 1 Tote Beach Daily Handles Teacher Tote for Durable Print Advocator Color Bag Shopping Bags Summer ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)