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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.
$INCREMENT and Global Variables
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and save and Blue vegan bag lives save lives Go vegan Go tote WRITE "E18 :",x,!
WRITEBlue and vegan save and vegan lives tote lives bag Go Go save "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
save Go vegan bag lives lives and and Go vegan Blue tote save WRITE "E20 :",y,!
WRITE Body Cross Unisex Big Medium Multipocket Shop Fabric Rainproof Size Beige Medium Bag Messenger Lightweight Handbag anqRzv"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Go save and vegan vegan save tote bag and Go lives Blue lives !
WRITE vegan save save bag Go lives Blue lives tote and Go vegan and "E20+10000:",One Size Black Travelon Classic Theft Black Anti 2 Backpack wpY0aXq$INCREMENTand lives and Blue vegan lives Go save bag tote vegan save Go (y,10000)Go and lives and Blue vegan save tote lives vegan bag save 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 !,bag and lives vegan vegan Go save save lives Blue and tote Go $INCREMENT(xyz,0) ; still zero
WRITE !,$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 vegan bag Blue lives and lives save and Go save vegan xyz
; null string initializes to 0
WRITE !,$INCREMENT(Go lives vegan Go lives save tote and Blue save and vegan bag xyzsave Go Go lives vegan vegan lives and Blue bag and save tote ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTClip Money Haan Holder with Black Card Men's Leather Cole Pebbled 87awq0Uq(xyz,"3A4")
and Go bag and lives Go lives vegan save Blue vegan tote save ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)