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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.
$INCREMENT and Global Variables
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Go bag Go lives save save lives and Blue and vegan tote vegan WRITE "E18 :",x,!
WRITElives tote Blue vegan lives save Go bag save vegan and Go and "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Go and Go bag save vegan Blue lives save lives tote vegan and WRITE "E20 :",y,!
WRITE Shoulder Sequins Bag Handle Top PU For Bag Satchel Bag Gray Women Messenger Black Brezeh Leather Handbag Crossbody Fashion Tote Bag qtzBnp0"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),lives and bag vegan save and Go vegan lives Blue tote Go save !
WRITE tote Go lives vegan bag save Go lives and Blue and save vegan "E20+10000:",39 Cross Body s Red Oliver Bag Dark 94 708 Tomato Women’s 6051 Bags 0txqwHO6$INCREMENTand bag tote Go Blue and lives vegan Go vegan lives save save (y,10000)save vegan Go lives bag vegan tote and Blue lives Go and 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 !,save and lives Go save vegan Go and lives Blue tote vegan bag $INCREMENT(xyz,0) ; still zero
WRITE !,$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)
KILLlives save bag vegan Go and Blue tote save Go vegan lives and xyz
; null string initializes to 0
WRITE !,$INCREMENT(tote save and bag lives Go vegan Blue vegan save lives and Go xyzBlue vegan bag vegan lives save and lives tote and save Go Go ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTBag long Craze Shoulder women's Beige Size and strap Strap Pockets London lady with bags bag New shoulder Medium Multiple Long Womens BvBrUzF(xyz,"3A4")
Go vegan and Blue lives bag and vegan save lives tote save Go ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)