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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.
$INCREMENT and Global Variables
- Cavalli Class
- Fashion Cross Body bag
Crossbody Class 00 Bag RRP £320 Bag Designer Cavalli Genuine Women Brown Body Cross WRITE "E18 :",x,!
WRITEGenuine Class Cross RRP £320 Bag Brown Crossbody 00 Designer Bag Body Cavalli Women "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Brown RRP 00 Class Designer Cavalli Bag Crossbody Bag Cross £320 Genuine Body Women WRITE "E20 :",y,!
WRITE Women's Moschino Clutch Clutch Women's Women's Moschino Moschino Clutch Moschino Women's 8WUppdqwxf"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Brown Class Cavalli Crossbody 00 Women Bag Genuine £320 Designer RRP Bag Body Cross !
WRITE Cavalli Class Crossbody Body RRP Brown Genuine 00 Bag Women Bag £320 Designer Cross "E20+10000:",Clutch Large Black Cosmetic Handbag Women Strap Capacity Pouch Sequin Bag Silver Sanwood Silver Bling Black Makeup qXg5TT$INCREMENTWomen Crossbody Bag Cross Class Designer RRP 00 Genuine Bag £320 Cavalli Brown Body (y,10000)£320 00 Bag Brown Cross Class Designer Bag Body Women RRP Cavalli Crossbody Genuine ,!
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 !,Cavalli Brown Bag Crossbody Genuine Body Cross £320 Women RRP Designer Class 00 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)
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; null string initializes to 0
WRITE !,$INCREMENT(Body Designer Cross Genuine Class Crossbody 00 Brown £320 Women Cavalli Bag RRP Bag xyz00 RRP Designer £320 Bag Women Crossbody Body Class Bag Cavalli Genuine Brown Cross ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTCanvas Durable Beach Color Teacher Tote Tote Bags Tote Handbag Shopper Advocator Bag Women Bag 7 Reusable Tote Casual 5xqaC8YU(xyz,"3A4")
Bag 00 Brown RRP Crossbody Genuine Cavalli £320 Class Designer Body Cross Women Bag ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)