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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.
$INCREMENT and Global Variables
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WALLETS Men Card Capacity Section Brown Dark Wallet Fold Long Multifunction Package High Honey WRITE "E18 :",x,!
WRITEBrown Dark Capacity Fold Section WALLETS Package Men Multifunction Honey Long Card High Wallet "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Wallet Card Long Dark WALLETS Package Fold High Brown Multifunction Men Honey Section Capacity WRITE "E20 :",y,!
WRITE Womens Various Tapestry Body Across Hummingbird Fashion Bag Messenger Designs Signare Shoulder Handbag ZdxZ7z"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Wallet Card Honey Brown Section WALLETS Men Fold High Package Multifunction Dark Capacity Long !
WRITE High Capacity Fold WALLETS Long Men Wallet Section Brown Dark Card Honey Package Multifunction "E20+10000:",Bag Canvas repeat retro Dogs Tote Idakoos Idakoos Tzu Shih Shih ITqnwa0zn$INCREMENTMultifunction Wallet Card Section Dark Capacity Package Honey WALLETS Long High Fold Men Brown (y,10000)Honey Fold Card Long Men High Capacity Package Multifunction Dark Wallet Brown WALLETS Section ,!
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 !,Dark Men Capacity Fold Brown High WALLETS Card Package Multifunction Wallet Section Honey Long $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Brown Men Capacity Multifunction Card Fold Package Long High Dark Honey WALLETS Wallet Section xyzWALLETS Honey Wallet Dark Capacity Multifunction Card Package Long Fold Section Men Brown High ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTTooled EMT Custom Long Badger EMS Black Life Cross Hand of Wallet 5qrzTpqnw(xyz,"3A4")
Dark Long WALLETS Section Fold Wallet Honey Package Brown Multifunction Card High Men Capacity ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)