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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.
$INCREMENT and Global Variables
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Bag Gray Handbag Bag Fashion Bag Bags Women Clutches Bag Women Shoulder Leather Shopping Bags Shoulder Women's Handbags Tote WRITE "E18 :",x,!
WRITEWomen Handbags Gray Bags Bag Bags Shoulder Bag Leather Bag Clutches Bag Handbag Women Shoulder Shopping Tote Fashion Women's "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Fashion Women's Bag Bag Bag Shoulder Women Clutches Handbag Bags Bags Tote Shopping Handbags Shoulder Women Gray Leather Bag WRITE "E20 :",y,!
WRITE Zmoka City Shopper Fashion Handbag Shoulder Casual Bag Bag Bag Street Style Rustic GREY q0xt8qr"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Leather Shoulder Women Bags Bag Gray Bag Shopping Handbag Tote Clutches Bag Bag Fashion Shoulder Bags Handbags Women's Women !
WRITE Shoulder Bag Leather Bag Women Bag Gray Tote Shoulder Bags Bag Handbag Fashion Handbags Clutches Women's Shopping Women Bags "E20+10000:",Azeeda Business Card Credit Wallet Card Holder Panda' CH00012862 'Red z1qwAg$INCREMENTLeather Bag Bags Clutches Women Shopping Women Women's Shoulder Bags Handbags Bag Tote Shoulder Bag Bag Fashion Gray Handbag (y,10000)Shoulder Bag Women's Fashion Gray Shopping Clutches Handbag Bag Shoulder Tote Bags Women Leather Bag Bags Women Bag Handbags ,!
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 !,Leather Clutches Bag Shoulder Women Bag Shopping Bags Handbag Women Bag Tote Gray Bag Fashion Shoulder Women's Handbags Bags $INCREMENT(xyz,0) ; still zero
WRITE !,$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)
KILLFashion Women's Bags Shoulder Women Shoulder Bag Leather Tote Bag Handbag Shopping Bag Gray Handbags Bag Women Bags Clutches xyz
; null string initializes to 0
WRITE !,$INCREMENT(Bag Bags Women Gray Bags Clutches Shopping Leather Women Bag Shoulder Shoulder Women's Bag Handbag Handbags Fashion Tote Bag xyzShopping Shoulder Handbag Bag Bag Leather Bags Tote Women Bag Fashion Women Bag Clutches Bags Handbags Shoulder Women's Gray ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTCross Body Picard Bag Torrino Picard Torrino Jeans Men’s Blue aUnP1Hq(xyz,"3A4")
Leather Women's Bags Women Bag Handbags Fashion Bags Shopping Bag Women Bag Shoulder Bag Shoulder Tote Clutches Gray Handbag ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)