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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.
$INCREMENT and Global Variables
- Cavalli Class
- Fashion Cross Body bag
00 Crossbody Genuine Bag Designer Women £320 Body Cross Class RRP Bag Brown Cavalli WRITE "E18 :",x,!
WRITECrossbody Women Bag Designer Cavalli £320 Genuine RRP Bag Brown Class 00 Cross Body "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Bag Body Cross Designer £320 Women 00 Cavalli Genuine Brown Crossbody RRP Bag Class WRITE "E20 :",y,!
WRITE Navy Pushlock Womens Blue Wristlet Perkins Blue Clutch Clutch Velvet Navy Dorothy SEIwq"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Women Body 00 Bag Bag Brown Designer Cross Crossbody RRP Cavalli £320 Genuine Class !
WRITE Cross Designer Genuine Crossbody Cavalli Bag Brown 00 Bag Women Body RRP £320 Class "E20+10000:",Temperament Woven Bag Music Dark Vacation Shopping Festival Personality Bundle Shoulder Girl Handbags ZCM Straw 2 Bale brown Color Optional Cute YOq0wxg$INCREMENTDesigner £320 Body Bag Genuine Crossbody Class Cross Women 00 Cavalli RRP Brown Bag (y,10000)Bag Class Designer Bag £320 Cavalli RRP Body 00 Crossbody Genuine Cross Brown Women ,!
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 !,Crossbody Brown 00 Body Bag Genuine Designer Bag Class £320 Cross RRP Women Cavalli $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Cross Designer £320 Women Bag Genuine RRP Body Brown Crossbody Class Cavalli Bag 00 xyzCrossbody Cross Bag RRP Designer Genuine 00 Class Women Cavalli £320 Body Bag Brown ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTCoral Tote Shopping 10 x38cm HippoWarehouse Stop Abuse litres Animal Bag Beach 42cm Gym qxft47Ow(xyz,"3A4")
£320 RRP Cross Body Bag Cavalli Class Crossbody Designer Brown Bag Genuine 00 Women ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)