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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.
$INCREMENT and Global Variables
- Cavalli Class
- Fashion Cross Body bag
Designer Brown Crossbody RRP Body Class Cavalli Cross 00 Bag Genuine Bag £320 Women WRITE "E18 :",x,!
WRITEBrown Genuine Women Class Crossbody 00 Cavalli Cross Bag Bag Designer Body £320 RRP "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Bag £320 Women Genuine RRP Class Body Bag Designer Cavalli 00 Cross Brown Crossbody WRITE "E20 :",y,!
WRITE Handmade Lalhaveli Shoulder Silk Bag Lalhaveli Silk Body Jacquard Jacquard Decorative Handmade Decorative Cross RwPYqIT"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Bag Women Bag Designer Genuine Cross £320 Body Crossbody 00 Cavalli RRP Class Brown !
WRITE Cross Class Cavalli Body Brown £320 Bag RRP 00 Genuine Designer Bag Women Crossbody "E20+10000:",Embroid Card PU Clutch Green Flowers Leather Wallets Short Army Women Holder Everpert Coin Mini 85ppw$INCREMENTBody £320 Bag Women Designer Brown Cross Crossbody 00 Bag Genuine Class RRP Cavalli (y,10000)Crossbody RRP Cavalli Class Bag Cross £320 Bag 00 Body Genuine Women Designer Brown ,!
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 !,Genuine Designer Bag Brown Class Bag 00 Crossbody Body Cavalli Cross RRP £320 Women $INCREMENT(xyz,0) ; still zero
WRITE !,$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)
KILLCross Brown 00 RRP Cavalli Class Women Designer £320 Genuine Body Bag Crossbody Bag xyz
; null string initializes to 0
WRITE !,$INCREMENT(Class Body RRP Brown Designer Bag Bag Crossbody Genuine £320 Cross 00 Cavalli Women xyzClass Designer Cross Body Women Cavalli Crossbody Brown 00 £320 Genuine Bag RRP Bag ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTStar US Army with Rhodium Clip Silver Sterling in Plating Money Yellow WZpH1nW(xyz,"3A4")
00 Cavalli Women Bag Class Crossbody Brown £320 Body Cross RRP Bag Genuine Designer ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)