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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.
$INCREMENT and Global Variables
- Lift parts: Telescopic handle; Style: Casual; Internal structure of the bag: Document bag, Mobile phone bag, Mezzanine zipper bag, Zipper pocket, etc.; Lifting part: Telescopic handle; Lining Texture: Polyester
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Soft Portable Shoulder FangYOU1314 Large Shoulder Capacity Ladies Bag Waterproof Oil Messenger Color Retro Leather Red Coffee WRITE "E18 :",x,!
WRITEPortable Bag Shoulder Color Ladies Coffee Oil Leather Soft Large Retro FangYOU1314 Shoulder Red Waterproof Messenger Capacity "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Bag Color Retro Capacity Messenger Oil Shoulder Ladies FangYOU1314 Coffee Portable Soft Red Shoulder Large Leather Waterproof WRITE "E20 :",y,!
WRITE bag Reusable Friendly Eco Bag O Style Shopping Skyeye Bag Shoulder Foldable Handbag qSfwE5Azx"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Color Capacity FangYOU1314 Messenger Coffee Ladies Soft Oil Bag Shoulder Red Waterproof Leather Portable Retro Large Shoulder !
WRITE FangYOU1314 Coffee Shoulder Waterproof Portable Red Soft Color Shoulder Ladies Leather Oil Retro Messenger Bag Large Capacity "E20+10000:",Bowknot With Ouneed Cute Girl Bag Crossbody Shoulder Women Bag for Blue Sky wg6fqgOX$INCREMENTLeather Bag Shoulder Red FangYOU1314 Ladies Large Waterproof Color Retro Soft Coffee Capacity Portable Messenger Oil Shoulder (y,10000)Bag Messenger Waterproof Soft FangYOU1314 Capacity Retro Ladies Red Coffee Shoulder Portable Leather Shoulder Oil Large Color ,!
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 Bag Oil Coffee Retro Ladies FangYOU1314 Waterproof Leather Color Large Shoulder Soft Portable Capacity Messenger Shoulder $INCREMENT(xyz,0) ; still zero
WRITE !,$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)
KILLLeather Shoulder Messenger Shoulder Bag FangYOU1314 Ladies Coffee Large Waterproof Red Portable Retro Soft Color Oil Capacity xyz
; null string initializes to 0
WRITE !,$INCREMENT(Red Coffee Soft Color Large Waterproof Capacity Leather Messenger Ladies Oil Portable Shoulder Bag Retro FangYOU1314 Shoulder xyzPortable Coffee Bag Retro Shoulder Oil FangYOU1314 Messenger Capacity Leather Red Color Ladies Waterproof Soft Large Shoulder ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTFlower Satin FREE Ivory Stunning Ruched UK With Clutch DELIVERY Crystal wEYPP(xyz,"3A4")
Capacity FangYOU1314 Oil Waterproof Large Coffee Bag Color Messenger Shoulder Ladies Leather Red Retro Shoulder Soft Portable ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)