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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.
$INCREMENT and Global Variables
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Women Gray Shoulder Shoulder Fashion Leather Bag Handbag Tote Bags Women's Handbags Bags Bag Clutches Bag Shopping Bag Women WRITE "E18 :",x,!
WRITEBag Bags Women Tote Shoulder Bag Fashion Women Clutches Bag Bags Shoulder Shopping Gray Handbags Leather Handbag Women's Bag "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Women Bag Handbags Shopping Bag Handbag Tote Shoulder Bag Women's Bags Bags Gray Bag Clutches Fashion Women Shoulder Leather WRITE "E20 :",y,!
WRITE Holder Card Azeeda 'Sail Business Boat' Wallet Credit Card CH00015609 xPxIqZSFn"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Gray Bag Bag Women Bags Fashion Bag Shoulder Women Handbags Tote Bag Women's Clutches Shoulder Bags Shopping Handbag Leather !
WRITE Handbag Bag Bag Bag Bags Tote Shoulder Bags Handbags Bag Women Women Gray Fashion Shopping Leather Women's Clutches Shoulder "E20+10000:",Pocket Shoulder Fashion Mini Multi Gray function Diagonal Mobile Flower205 Waterproof Bag Dark Bag Sports Outdoor p8w7qqg$INCREMENTWomen Shoulder Bag Bag Bag Shoulder Handbag Clutches Tote Bag Leather Handbags Gray Women's Fashion Bags Bags Women Shopping (y,10000)Fashion Bag Bags Women Bag Shopping Handbag Women's Tote Shoulder Shoulder Bag Clutches Gray Bags Women Handbags Leather Bag ,!
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 !,Fashion Women's Tote Shoulder Gray Bags Handbag Bags Clutches Women Shoulder Bag Bag Bag Bag Shopping Women Leather Handbags $INCREMENT(xyz,0) ; still zero
WRITE !,$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)
KILLBag Bag Leather Shoulder Shopping Bag Gray Shoulder Bag Women's Tote Bags Bags Handbag Women Handbags Clutches Fashion Women xyz
; null string initializes to 0
WRITE !,$INCREMENT(Bag Shoulder Fashion Bags Bag Bags Clutches Gray Leather Handbags Shopping Shoulder Women Bag Tote Women's Women Bag Handbag xyzHandbag Gray Bag Shoulder Bags Tote Leather Bags Clutches Shopping Bag Women Shoulder Handbags Fashion Bag Women's Bag Women ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTBrown Zipper Wax Black Clutch Soft Wallet H Wallet Leather amp;W Oil gqwZA(xyz,"3A4")
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; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)