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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.
$INCREMENT and Global Variables
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Leather Handbag Bag Bag Bags Bag Handbags Clutches Women Shoulder Gray Bags Tote Women's Fashion Shopping Bag Women Shoulder WRITE "E18 :",x,!
WRITEBag Bag Gray Bag Leather Shoulder Shopping Clutches Handbag Women Bags Women's Handbags Shoulder Tote Bag Fashion Bags Women "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Business Wallet Head' CH00005223 'Horse Card Azeeda Credit Card Holder w7RRaB"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Shopping Handbag Clutches Handbags Shoulder Bag Bags Gray Tote Bag Women Shoulder Bag Women's Bag Women Fashion Bags Leather !
WRITE Bags Bag Shoulder Women Women's Shopping Shoulder Bags Handbag Gray Leather Bag Fashion Women Clutches Handbags Tote Bag Bag "E20+10000:",NiaNia Handbag YB001 Leather Women's Leather Bag YB001 Women's Totes Rose NiaNia Shoulder B0TqBw4r$INCREMENTFashion Bags Bag Women Bag Handbag Women Women's Clutches Gray Bag Shoulder Shoulder Handbags Shopping Bags Leather Tote Bag (y,10000)Gray Clutches Bag Bag Fashion Shoulder Handbags Bags Bag Women Women Bags Tote Leather Women's Shoulder Bag Shopping Handbag ,!
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 !,Shoulder Bag Fashion Handbag Leather Clutches Bags Women Bag Bag Women's Bags Tote Shopping Shoulder Handbags Gray Women 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 !,$INCREMENT(Bag Bag Shopping Gray Bag Fashion Tote Bag Clutches Bags Shoulder Handbag Bags Leather Handbags Women's Shoulder Women Women xyzWomen Shoulder Shopping Fashion Tote Women Shoulder Women's Clutches Bag Bags Bag Bags Handbags Gray Bag Bag Leather Handbag ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTa Bag Trendy Wine Red Shoulder Light Leather Crossbody amp;DORIS for NICOLE Lovely Women Bronze Pink Handbags Female EaqffH(xyz,"3A4")
Bags Bag Shoulder Bags Clutches Gray Fashion Shoulder Bag Bag Tote Leather Women Shopping Women Women's Bag Handbags Handbag ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)