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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.
$INCREMENT and Global Variables
- Size:38cm x 32cm x 9.5cm
- Outer Material: canvas
- Strap Length:23cm
- Style:Shoulder Bag
small shoulder cute Women's TOOGOO cat shopping with messenger Women's handbag bag handbag canvas bag Blue R WRITE "E18 :",x,!
WRITEsmall Blue R handbag canvas shoulder with cute bag TOOGOO shopping cat messenger handbag Women's Women's bag "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
bag messenger R cute cat small with shoulder shopping canvas handbag Women's bag TOOGOO Blue Women's handbag WRITE "E20 :",y,!
WRITE City Kipling Mirage Womens Mehrfarbig Bold Pack Mini Backpack Kipling Womens pwzq5xtx"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Blue cute cat TOOGOO Women's R canvas handbag shopping handbag small Women's bag messenger bag shoulder with !
WRITE bag with small Women's Women's shoulder handbag bag shopping messenger handbag cat cute canvas R Blue TOOGOO "E20+10000:",Azeeda Business CH00006315 Holder Credit Card Card Face' Wallet 'Monkey wEgOrE$INCREMENTshoulder handbag Blue canvas messenger small TOOGOO Women's bag shopping R cute cat bag handbag Women's with (y,10000)messenger with cat cute handbag handbag Women's shopping shoulder small R bag bag canvas TOOGOO Women's Blue ,!
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 !,shoulder canvas Women's small TOOGOO bag handbag with Blue cute bag messenger shopping cat Women's R handbag $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(bag shoulder shopping handbag with bag cute cat TOOGOO Women's canvas Women's Blue handbag messenger small R xyzmessenger cat Women's handbag shopping shoulder TOOGOO handbag Blue with small canvas bag Women's bag cute R ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTLarge Printing Kofun Handbag Shopping Women Bag Canvas Shoulder White School Beach qwTtwf4F(xyz,"3A4")
shopping Women's with small handbag Blue bag cute handbag messenger R canvas cat bag shoulder TOOGOO Women's ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)