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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.
$INCREMENT and Global Variables
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Go save Blue lives tote save Go lives vegan and vegan and bag WRITE "E18 :",x,!
WRITEsave tote Blue lives and vegan Go lives vegan bag save Go and "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
tote vegan bag lives Go vegan Blue Go and and save lives save WRITE "E20 :",y,!
WRITE and Shoulder Outdoor Geometric Bag Rucksack Japanese Laser Cube Lingge Travel Male Leather Lovers Patent Lightgold Folding Female Bag Backpack dXBdaw"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Blue lives save and and vegan Go lives bag Go vegan save tote !
WRITE and Go save and bag lives lives vegan Go Blue vegan save tote "E20+10000:",Handbag Bag Fashion B Street Lady Tide Lady Big Shoulder JPFCAK Bag xTqzIw55$INCREMENTBlue tote Go bag lives Go save vegan save and lives and vegan (y,10000)Blue save vegan lives and lives save bag vegan and tote Go Go ,!
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 !,Go save bag vegan lives tote lives and save Go and Blue vegan $INCREMENT(xyz,0) ; still zero
WRITE !,$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)
KILLGo tote save bag vegan Blue lives and and lives save vegan Go xyz
; null string initializes to 0
WRITE !,$INCREMENT(bag lives Go save save and vegan vegan Blue lives and Go tote xyztote lives save and lives Blue vegan save Go and vegan Go bag ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTBags Women's Minaudiere Clutch Bridal Wedding Prom London Black Evening Party Diamante Glitter For Handheld Boxy Xardi Cwg76qw(xyz,"3A4")
vegan lives and Go lives Go and tote save vegan Blue bag save ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)