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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.
$INCREMENT and Global Variables
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Shoulder Bag Bag Women's Messenger Stylish Retro Bag Bag Boston Bag Handbag Stylefour Shoulder Satchel WRITE "E18 :",x,!
WRITEStylish Bag Bag Messenger Stylefour Shoulder Handbag Boston Bag Shoulder Retro Bag Satchel Women's Bag "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Messenger Retro Stylefour Bag Shoulder Bag Bag Women's Handbag Shoulder Boston Stylish Bag Satchel Bag WRITE "E20 :",y,!
WRITE Wallet Leather Handmade Genuine Stingray Trifold Burgundy Card 9 Skin XYY01xqf"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Shoulder Retro Handbag Bag Stylefour Bag Boston Bag Bag Messenger Shoulder Stylish Bag Women's Satchel !
WRITE Bag Bag Bag Satchel Handbag Shoulder Retro Stylish Stylefour Boston Messenger Bag Women's Shoulder Bag "E20+10000:",Envelope Ladies Elegant Nude CASPAR Evening Clutch Bag with TA392 Zip UFxqqt7Ew$INCREMENTShoulder Women's Messenger Handbag Bag Boston Bag Stylish Stylefour Satchel Bag Bag Shoulder Retro Bag (y,10000)Shoulder Satchel Handbag Stylefour Bag Shoulder Women's Bag Bag Retro Bag Messenger Stylish Boston 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 !,Bag Handbag Retro Bag Satchel Women's Shoulder Boston Bag Bag Stylefour Bag Shoulder Messenger Stylish $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Bag Stylish Satchel Messenger Bag Stylefour Boston Shoulder Bag Women's Bag Bag Retro Handbag Shoulder xyzBag Bag Boston Women's Retro Handbag Messenger Shoulder Bag Stylefour Shoulder Stylish Satchel Bag Bag ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTFlybloom Card Pattern Women Long Pu Leather Pattern Purse Zipper Flamingos Handbag Cartoon Strawberry Girls Clutch Pattern Wallet with Holder rrHAq(xyz,"3A4")
Bag Boston Bag Bag Retro Bag Stylish Shoulder Messenger Handbag Satchel Stylefour Women's Bag Shoulder ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)