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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.
$INCREMENT and Global Variables
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RRP Brown Bag Bag Designer Cross 00 Crossbody Cavalli Body Genuine Class Women £320 WRITE "E18 :",x,!
WRITECrossbody Bag Women Cavalli Class Cross Bag Body Brown Designer Genuine £320 RRP 00 "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Bag £320 Class Genuine RRP Designer Cavalli Brown Women Bag Crossbody Cross Body 00 WRITE "E20 :",y,!
WRITE Lapidus' Wallet I1305 Lapidus 'Ted leather checkbook holder Ted brown q0A1EwAf"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Bag Body Brown 00 £320 Class RRP Designer Genuine Bag Women Cross Cavalli Crossbody !
WRITE Women RRP Class Brown £320 Crossbody 00 Body Bag Cross Cavalli Bag Designer Genuine "E20+10000:",Purple Bag Mini Candy Shoulder Heart Design Handbag Shaped DELEY Fashion Color Women Bqx77P$INCREMENTRRP Bag Class 00 Designer Cavalli Crossbody Genuine Brown Bag Women Body Cross £320 (y,10000)Designer Class Bag 00 £320 Bag Crossbody Body Women Brown Cavalli Cross RRP 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 Class Designer Women £320 RRP Cross Body Bag Brown Bag 00 Crossbody 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)
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; null string initializes to 0
WRITE !,$INCREMENT(Body Designer £320 Class Crossbody Women Genuine Cross Bag RRP Bag 00 Brown Cavalli xyz00 Class Genuine Bag Bag RRP Body Brown Crossbody £320 Designer Women Cross Cavalli ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTShopping M Sling Blue Go amp; Calm Print Tote Keep ZwWWCq4nX(xyz,"3A4")
Crossbody Women RRP Designer Bag 00 £320 Cross Cavalli Brown Genuine Body Class Bag ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)