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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.
$INCREMENT and Global Variables
- Lift parts: Telescopic handle; Style: Casual; Internal structure of the bag: Document bag, Mobile phone bag, Mezzanine zipper bag, Zipper pocket, etc.; Lifting part: Telescopic handle; Lining Texture: Polyester
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Shoulder Red Ladies Portable FangYOU1314 Waterproof Leather Color Bag Oil Large Coffee Retro Capacity Messenger Shoulder Soft WRITE "E18 :",x,!
WRITELeather Coffee Red Bag Waterproof Retro Messenger Ladies Shoulder Portable FangYOU1314 Soft Capacity Shoulder Oil Color Large "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Oil FangYOU1314 Shoulder Messenger Soft Ladies Retro Portable Waterproof Coffee Leather Capacity Shoulder Large Color Red Bag WRITE "E20 :",y,!
WRITE for Laptop ECOSUSI Bag 7inch Women Black Satchel Vintage Messenger Tablet 14 Backpack 0RAASnOqx"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Red Messenger Soft Bag Leather Waterproof Retro Color FangYOU1314 Portable Shoulder Coffee Shoulder Capacity Ladies Oil Large !
WRITE Coffee Shoulder Bag FangYOU1314 Leather Large Oil Waterproof Messenger Retro Portable Red Soft Shoulder Ladies Capacity Color "E20+10000:",Women Bag Bag Tassels Shoulder Bucket Bag Shopper Bag Tote Cotton Straw Hobo Lining Summer Handbag Handle Beach Top Brown rwqXxrAE$INCREMENTPortable FangYOU1314 Ladies Bag Shoulder Large Capacity Waterproof Shoulder Soft Coffee Retro Color Leather Messenger Red Oil (y,10000)Coffee Leather Shoulder Portable Ladies Messenger Large FangYOU1314 Red Color Retro Bag Waterproof Soft Capacity Oil Shoulder ,!
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 !,Red Soft Large Retro Color Shoulder Bag FangYOU1314 Leather Messenger Waterproof Shoulder Coffee Oil Portable Ladies Capacity $INCREMENT(xyz,0) ; still zero
WRITE !,$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)
KILLPortable Retro Leather Soft Coffee Bag Color Shoulder Oil Ladies Waterproof Red Messenger Large Capacity FangYOU1314 Shoulder xyz
; null string initializes to 0
WRITE !,$INCREMENT(Messenger Red Waterproof Shoulder Color Shoulder Bag Coffee Large Soft Retro FangYOU1314 Leather Oil Portable Capacity Ladies xyzRed Color Soft Shoulder FangYOU1314 Messenger Ladies Portable Waterproof Retro Coffee Leather Capacity Oil Large Bag Shoulder ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTGym Shopping Nap litres HippoWarehouse 10 Bag Tote x38cm Beach Natural 42cm Queen wdtqvqBx4I(xyz,"3A4")
Ladies Red Waterproof Retro Bag Color Shoulder Shoulder FangYOU1314 Large Portable Leather Coffee Messenger Capacity Oil Soft ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)