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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.
$INCREMENT and Global Variables
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WRITEShoulder Women Shoulder Shopping Bags Bag Bags Bag Tote Women's Gray Leather Handbags Women Clutches Handbag Bag Bag Fashion "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Business 'Apple Pie' 'Apple Credit Pie' Wallet CH00015537 Holder Card Card 7nPRqnv"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Bag Bag Bags Handbag Bag Women's Shoulder Clutches Women Shoulder Leather Women Fashion Shopping Bags Tote Gray Handbags Bag !
WRITE Bag Bag Fashion Handbag Bags Women Bags Shoulder Bag Leather Women Clutches Gray Women's Bag Shoulder Shopping Tote Handbags "E20+10000:",Women Ladies Tassel Different for Tan LYDC HandBags Colours Girls London in 80xqRwTS$INCREMENTBags Shoulder Handbags Shoulder Women Tote Fashion Women's Bag Clutches Shopping Leather Women Bag Gray Bag Handbag Bag Bags (y,10000)Women Fashion Handbag Women's Shopping Gray Bag Shoulder Bags Bag Leather Handbags Tote Bag Bag Women Bags Shoulder Clutches ,!
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 Shopping Shoulder Bag Women Clutches Bag Leather Handbags Gray Bags Women's Bags Shoulder Bag Tote Handbag 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 !,$INCREMENT(Bag Fashion Bags Clutches Bag Bag Bag Leather Shoulder Women Women's Shoulder Tote Handbag Women Handbags Gray Shopping Bags xyzBag Women Shoulder Bag Bags Bag Bags Fashion Clutches Women Tote Shopping Women's Leather Bag Gray Shoulder Handbag Handbags ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTAzeeda Pig' Wallet Holder CH00003712 'Suckling Card Credit Card Business BFBqr(xyz,"3A4")
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; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)