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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.
$INCREMENT and Global Variables
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lives Go and lives vegan tote save Blue vegan Go and save bag WRITE "E18 :",x,!
WRITEand and vegan save bag lives lives Blue vegan Go tote Go save "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
save Go vegan Go Blue and bag tote lives lives save vegan and WRITE "E20 :",y,!
WRITE Way Two Banana Clutch Banana Two Blue Blue Black Sequin Sequin Black Bag Way Clutch Bag w1UzxnqAZI"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),save Go bag Go and Blue vegan save and vegan tote lives lives !
WRITE vegan vegan lives Blue Go lives save and Go and bag save tote "E20+10000:",Clutch Fashion 6 HKC encrusted Bag Evening Diamond Lady's Women's Fashion Banquet Ladies Handbag SqXrq8p$INCREMENTand vegan Blue bag lives Go save vegan and save lives tote Go (y,10000)save Go and vegan lives save lives Go Blue tote and bag vegan ,!
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 !,and save vegan lives Blue save Go bag tote and Go lives 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)
KILLsave tote lives Go vegan Blue and and vegan lives save bag Go xyz
; null string initializes to 0
WRITE !,$INCREMENT(vegan save lives and lives bag tote Blue and save vegan Go Go xyzbag save Blue Go and Go vegan vegan tote save lives lives and ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTPurse Handbag Ladies Women's Bag Suede Lime Evening Clutch KW308 Bag Envelope Faux Cocktail wwSvpqWR(xyz,"3A4")
tote Go and save lives save bag vegan lives Go vegan Blue and ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)