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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.
$INCREMENT and Global Variables
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Cross Bucket Jinne Bag Navy Shoulder Italian Montte Leather Body Women's Di WRITE "E18 :",x,!
WRITEJinne Di Body Navy Bucket Montte Cross Shoulder Women's Italian Bag Leather "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Shoulder Bucket Bag Jinne Body Cross Montte Italian Di Leather Women's Navy WRITE "E20 :",y,!
WRITE Summer Travel Leather Bag Casual Totes Beach Handbags Advocator Tote 9 Wallet with Women PU Color nw4x8Aqv"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Bucket Jinne Body Cross Shoulder Women's Bag Di Leather Italian Navy Montte !
WRITE Italian Navy Women's Bucket Body Di Leather Shoulder Montte Jinne Bag Cross "E20+10000:",printed bag large totes allover bags tote professional large Birds bags best tote Sky popular tote tote Orange Nature popular totes professional womens' bags bags View best Cloud tote 4Yxfqa$INCREMENTCross Bucket Body Shoulder Leather Bag Jinne Italian Women's Montte Navy Di (y,10000)Women's Leather Italian Body Navy Bag Montte Cross Shoulder Bucket Jinne Di ,!
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 !,Bucket Women's Bag Navy Leather Di Montte Shoulder Italian Body Cross Jinne $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Cross Leather Women's Italian Montte Bag Jinne Bucket Di Body Navy Shoulder xyzLeather Di Bucket Cross Navy Jinne Shoulder Bag Body Italian Women's Montte ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTBag GINDOLY Brown Shopper Bag Bag Bucket Canvas Tote Hobo Shoulder Fashion Lady Small Handbag 1q1wr47(xyz,"3A4")
Italian Di Navy Bucket Body Women's Shoulder Leather Jinne Montte Cross Bag ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)