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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.
$INCREMENT and Global Variables
- Cavalli Class
- Fashion Cross Body bag
Designer Body Class Genuine Crossbody Cavalli £320 Brown Bag Cross Women Bag 00 RRP WRITE "E18 :",x,!
WRITERRP Crossbody 00 Bag Genuine Cross £320 Body Cavalli Women Bag Designer Brown Class "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Genuine Women Crossbody RRP Cavalli 00 Class £320 Brown Cross Bag Designer Bag Body WRITE "E20 :",y,!
WRITE Temperament Ladies Bag Evening Bag Bag PU Black Handbag Clutch Leather Chain Butterfly Crossbody Dinner Bag Fashion Banquet Z8rxBvZq"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Cross £320 Class 00 Designer Genuine Body Bag Crossbody Cavalli Brown Women Bag RRP !
WRITE Bag 00 Cross Brown Women RRP Body Class Crossbody Cavalli Genuine Designer Bag £320 "E20+10000:",AdultPurse AdultPurse Unisex Alassio Unisex Alassio Black Unisex Alassio Black IH0wxzqn1$INCREMENTCrossbody Cavalli Class Body Designer RRP Brown Bag 00 Women Cross Bag £320 Genuine (y,10000)00 Cross Body RRP Genuine Designer Women Crossbody Bag Bag Cavalli Class Brown £320 ,!
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 Women 00 Bag RRP Cross £320 Brown Bag Crossbody Designer Body Class Genuine $INCREMENT(xyz,0) ; still zero
WRITE !,$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)
KILLBrown 00 RRP Women Cross £320 Class Bag Genuine Bag Designer Cavalli Body Crossbody xyz
; null string initializes to 0
WRITE !,$INCREMENT(Genuine £320 Cavalli Bag Women Bag Body Brown Class Designer Crossbody Cross RRP 00 xyzBody Cross Class Genuine Crossbody Women Cavalli Bag 00 Bag Designer RRP £320 Brown ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTBag Vintage Cowhide Cell Daily Crossbody Handbag for Yoome Women Phone Leather Purses Bags Brown Shoulder Bags SxpwYqwId(xyz,"3A4")
Genuine Bag Bag Class £320 00 RRP Designer Cross Cavalli Women Body Brown Crossbody ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)