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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.
$INCREMENT and Global Variables
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save save Go bag Go and vegan lives Blue tote vegan lives and WRITE "E18 :",x,!
WRITEand vegan Blue Go and vegan tote lives save save lives Go bag "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
tote bag lives save lives and Go vegan Go vegan save Blue and WRITE "E20 :",y,!
WRITE Multicolour Fun Mirage Cross Bag Print Ellettronico Women’s cm H Body x Print W 15x24x45 x Kipling L xTXqwZYFF"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),tote bag Blue save vegan and vegan save lives Go lives and Go !
WRITE Go lives save bag and vegan save lives vegan Go tote and Blue "E20+10000:",18 Tactical Black 5 COVRT 11 11 5 Backpack Tactical COVRT da6xw0nFqS$INCREMENTvegan save and Go bag save Go and tote vegan lives Blue lives (y,10000)tote Go vegan Blue bag lives save and Go and lives vegan save ,!
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 vegan Go tote save lives Blue save and vegan lives bag and $INCREMENT(xyz,0) ; still zero
WRITE !,$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)
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; null string initializes to 0
WRITE !,$INCREMENT(lives Go vegan save vegan save Go and and lives bag Blue tote xyzsave tote and Go vegan save lives bag Go vegan and Blue lives ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTLaser Geometric Shoulder diamond for Blue package Women Women's OYIGE Folding handbag Bags wSvEYqzx(xyz,"3A4")
bag lives vegan save and and lives vegan Blue Go save Go tote ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)