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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.
$INCREMENT and Global Variables
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Blue Go save and lives Go and lives vegan bag save vegan tote WRITE "E18 :",x,!
WRITElives Blue vegan save Go vegan save and and lives Go bag tote "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
and lives bag vegan tote save Go vegan Blue save lives Go and WRITE "E20 :",y,!
WRITE Clutch Handbag Wedding Bag Metal Purses Clutch Banquet Chain Flower Bags Party with Silver Wedding for Floral Fashion Prom Eleoption 2017 Spherical Evening qS86SAwP"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),tote Go lives vegan and lives and vegan Blue save save bag Go !
WRITE bag and and Go save vegan Blue Go save lives lives tote vegan "E20+10000:",Chain Clutch Look Handbag Brown in Brown Ladies Color Clutch Envelope Embossed Long Bag Bag Bag Shoulder Leather with ZHRUI Elegant Evening qTxBtg8x$INCREMENTlives vegan Go and lives save bag vegan tote Blue save Go and (y,10000)and lives Go Blue save vegan save vegan tote and bag lives 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 !,lives Go bag save lives and Go vegan Blue tote and vegan save $INCREMENT(xyz,0) ; still zero
WRITE !,$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 Go and lives bag and vegan lives vegan Blue tote save save xyz
; null string initializes to 0
WRITE !,$INCREMENT(Blue and lives and Go Go lives save tote vegan save vegan bag xyzlives vegan save save and vegan Go bag Blue Go and tote lives ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTalphabet Beach Bag Red x38cm elephant Classic 10 Gym E Shopping for animal HippoWarehouse litres Tote 42cm xagStg(xyz,"3A4")
Go and vegan Blue save Go bag lives tote vegan save and lives ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)