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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.
$INCREMENT and Global Variables
- Size:38cm x 32cm x 9.5cm
- Outer Material: canvas
- Strap Length:23cm
- Style:Shoulder Bag
with TOOGOO R shoulder cat bag handbag small Women's Blue shopping canvas cute handbag bag Women's messenger WRITE "E18 :",x,!
WRITEWomen's TOOGOO small bag shoulder handbag handbag Blue Women's cat canvas bag messenger with cute shopping R "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
shopping bag with messenger R shoulder bag Women's handbag small handbag cat Blue Women's canvas cute TOOGOO WRITE "E20 :",y,!
WRITE Running Running Eddany three Eddany Canvas three Tote words Bag wxzptq"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Blue messenger cat R cute Women's handbag Women's TOOGOO shopping small handbag bag shoulder bag canvas with !
WRITE messenger bag Blue with Women's handbag canvas shopping bag TOOGOO handbag shoulder R small cute Women's cat "E20+10000:",Purses Crystal With Jin Ya Evening Bags Cocktail Rhinestones Clutch Gold Flower 7qEaqxwH$INCREMENTbag with handbag small messenger cute cat canvas R shoulder Women's Women's Blue TOOGOO shopping bag handbag (y,10000)bag cute R cat handbag Women's with handbag small messenger canvas TOOGOO Blue Women's shopping bag 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 !,small R TOOGOO cat canvas Blue bag with messenger handbag shopping bag Women's shoulder handbag cute Women's $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Women's bag small cat handbag with messenger bag handbag R canvas shopping TOOGOO Women's cute shoulder Blue xyzmessenger TOOGOO Women's shoulder Women's Blue shopping cute R handbag bag canvas cat small handbag with bag ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTBeach Ross Joey Shopping litres Rachel 42cm Be Chandler Phoebe Black x38cm Monica HippoWarehouse Bag like Gym Tote 10 0qA4Px1(xyz,"3A4")
Women's Women's bag bag cute cat R messenger TOOGOO small canvas shoulder handbag Blue with handbag shopping ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)