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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.
$INCREMENT and Global Variables
- "Style": This is a printed 3D animal pattern student bag, bright 3D print design, eye-catching and impressive; air cushion belt carrying system, adjustable shoulder strap, durable and comfortable to carry, smooth double zipper.
- "Comfort": light (378g). Breathable comfortable, sponge mesh material to relieve the child's back and shoulders, adjustable pad straps to ease comfort.
- "Size": Size: 44 * 28 * 14cm (17.3 "L x 11" H x 5.1 "W).
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- "Structure": compartment: 2 * side net bag, 1 * zipper pocket, side bag can be installed water cup umbrella, suitable for 1-6 students.
Bag Students Canvas School Printing 1 grades 6 6833c Backpack 3D Animal Shoulders Backpacks WRITE "E18 :",x,!
WRITEPrinting Shoulders Canvas Bag grades Backpacks Animal 1 Backpack 3D 6833c School 6 Students "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Canvas 3D Shoulders grades Bag Printing Students 6 1 School Backpack Animal 6833c Backpacks WRITE "E20 :",y,!
WRITE Wallet Tan Card RFID Men for Protector and Genuine Leather Credit Card Charlie Card Box Gift Credit Blocking Wallet AKIELO Collection Edition Holder Minimalist Eqx11t"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),grades 6833c Bag Canvas Students Printing Animal Backpack Shoulders School 1 Backpacks 6 3D !
WRITE 6 Animal Shoulders Backpack Students grades 1 6833c Bag Backpacks Canvas School 3D Printing "E20+10000:",Lock Women Black Handbag Crown Jewelled Evening Damara Damara Rhinestones Rhinestones Jewelled Crown Women wzzfqX$INCREMENTPrinting Animal Students 6 Shoulders 6833c 3D Backpack School Bag Canvas 1 Backpacks grades (y,10000)3D Bag 1 6833c Printing 6 Shoulders Backpacks grades Backpack School Canvas Animal Students ,!
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 !,Backpacks Canvas School 6 Bag 1 Shoulders grades Printing 6833c Students 3D Backpack Animal $INCREMENT(xyz,0) ; still zero
WRITE !,$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)
KILLAnimal 1 School grades Bag Backpack Printing Students 3D 6833c Backpacks Shoulders 6 Canvas xyz
; null string initializes to 0
WRITE !,$INCREMENT(Printing 3D 1 6833c Backpacks Animal 6 grades School Backpack Students Bag Canvas Shoulders xyzBackpack Canvas 3D grades Animal 1 Shoulders School Bag Students 6833c Backpacks Printing 6 ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTTote Canvas For Handle Top Grey Bag Purses Women's Shopping OURBAG Grey Shoulder Casual Women wgAIvp(xyz,"3A4")
School Bag Animal Backpacks Canvas Backpack 6 Printing grades 6833c Students Shoulders 1 3D ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)