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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.
$INCREMENT and Global Variables
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Leather Bag Shoulder Bag Bags Women Bag Shoulder Fashion Gray Tote Handbags Clutches Handbag Women Bags Shopping Bag Women's WRITE "E18 :",x,!
WRITEShoulder Shopping Clutches Bag Tote Leather Women Bags Gray Handbags Handbag Women Bag Shoulder Bag Bag Fashion Women's Bags "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Womens Backpack School Mini Gym Ladies College Shoulder Womens Fabric Bag Turquoise Rucksack Girls Bag nq6fxwgwYz"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Clutches Shoulder Gray Bag Handbag Bags Bag Bags Bag Women's Leather Shoulder Tote Bag Handbags Shopping Fashion Women Women !
WRITE Shoulder Shoulder Tote Handbag Women's Shopping Gray Bag Clutches Women Women Bags Handbags Leather Bag Fashion Bags Bag Bag "E20+10000:",Cover Protective Embossed Case Dfly Card Flip Purple Function Soft for Z3 Premium Xperia Mandala Xperia Brown Wallet Z3 Holder Slim Kickstand with Sony PU Slot Design Leather 0EqqRUw$INCREMENTBags Gray Women Women Leather Tote Fashion Handbag Bag Bag Women's Shoulder Clutches Handbags Bags Shoulder Bag Shopping Bag (y,10000)Clutches Shoulder Women Bag Bags Shopping Gray Leather Bag Women Bag Bags Handbags Shoulder Women's Fashion Handbag Tote 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 !,Tote Bag Clutches Handbag Women Shopping Women's Shoulder Bag Women Handbags Bag Bags Shoulder Gray Fashion Leather Bags Bag $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Bag Gray Leather Shoulder Shopping Shoulder Bag Bag Women Bags Women's Women Bags Handbags Handbag Clutches Tote Bag Fashion xyzShoulder Tote Bag Leather Bags Shopping Handbags Clutches Handbag Bag Shoulder Women's Gray Women Bag Bag Bags Women Fashion ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTTote most x38cm sociology 42cm Shopping World's 10 teacher Gym Bag HippoWarehouse amazing Beach Natural litres cX5nqfxxPa(xyz,"3A4")
Bags Clutches Handbags Handbag Shoulder Shoulder Women's Bag Bag Leather Bag Shopping Tote Bags Women Gray Fashion Bag Women ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)