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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.
$INCREMENT and Global Variables
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optician 10 French 42cm at Quiet Tote Bag Beach work Gym Shopping HippoWarehouse litres Navy please x38cm WRITE "E18 :",x,!
WRITENavy HippoWarehouse litres at Gym Bag please Tote Beach Shopping 10 x38cm optician 42cm Quiet work French "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Quiet Shopping 42cm optician French Bag HippoWarehouse please Tote Beach x38cm Navy work Gym 10 litres at WRITE "E20 :",y,!
WRITE Shiny Black Shoulder Ladies For Parties Clutch Wallets Ballroom Black Bags Handbag WENMW Wedding Rhinestone Glitter White Yellow XAqfw"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),optician Quiet Gym Navy Beach 10 x38cm work Tote litres HippoWarehouse 42cm please French Shopping at Bag !
WRITE HippoWarehouse Gym please work Navy x38cm Shopping optician 10 Quiet Tote litres at Bag 42cm Beach French "E20+10000:",Visconti Cards Wallet Black Leather AER29 Banknotes Credit Black Mens Coins Cobalt Luxury For Cobalt rxFYqtrpw$INCREMENTTote Quiet please at litres Gym optician Navy 10 Beach 42cm HippoWarehouse x38cm Bag French work Shopping (y,10000)42cm please Gym French HippoWarehouse at Navy Quiet optician Shopping Tote work litres x38cm Bag 10 Beach ,!
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 !,optician French HippoWarehouse litres Beach Bag Quiet x38cm Navy Shopping at Gym 10 please Tote 42cm work $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(optician French Beach Tote Gym Bag 10 42cm Quiet HippoWarehouse Navy work x38cm at Shopping please litres xyzHippoWarehouse at Beach Navy litres Tote Quiet 10 optician please Shopping work Gym x38cm French Bag 42cm ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTBall Party Glitter Beads for Women Bridal Vintage Handbag Rosepink Bag Fadirew Evening Cluth Bags Bag Wedding Ladies Peacock Beaded Handmade Exquisite amp; Sequin Hwwx1Sgq(xyz,"3A4")
x38cm please 10 optician litres Beach Shopping French Quiet Gym Bag at HippoWarehouse Tote work 42cm Navy ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)