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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.
$INCREMENT and Global Variables
- Size:38cm x 32cm x 9.5cm
- Outer Material: canvas
- Strap Length:23cm
- Style:Shoulder Bag
canvas bag Women's Women's TOOGOO handbag small Blue messenger shopping cat bag with shoulder cute R handbag WRITE "E18 :",x,!
WRITEhandbag cute messenger bag Women's with cat Blue shoulder handbag small bag Women's TOOGOO shopping canvas R "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
with canvas handbag cat R small shopping Blue Women's bag bag cute messenger TOOGOO shoulder Women's handbag WRITE "E20 :",y,!
WRITE package High Nikon bagHigh cost theft backpack Photography cost Anti Anti Canon Grey Digital waterproof package Nikon backpack Camera bag Digital waterproof theft Camera Canon Photography rOPxpr"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),TOOGOO bag handbag with cat small messenger R canvas cute Blue handbag bag Women's Women's shoulder shopping !
WRITE bag Women's cute Women's TOOGOO canvas handbag messenger small with handbag R shopping bag cat Blue shoulder "E20+10000:",Birthday 25 Christmas with stocking reuseable our Shopping or wording Beach the Crazy litres unique Size Tote bag 10 x Lady tote original 38 Horse from Bag An gift idea Black filler Gym cm 42 range wxpXAIcHCq$INCREMENTWomen's small shoulder canvas TOOGOO Blue messenger handbag handbag bag cat with bag shopping cute R Women's (y,10000)Women's canvas shoulder handbag TOOGOO Women's cute R cat bag handbag small Blue messenger shopping bag with ,!
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 !,cute R TOOGOO small handbag handbag canvas Women's with Women's cat shoulder messenger bag bag shopping Blue $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(cat handbag small bag Women's R shopping canvas shoulder messenger Women's bag handbag TOOGOO Blue cute with xyzshopping cute bag Blue handbag TOOGOO shoulder Women's messenger canvas cat handbag with small R bag Women's ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTLa Diane Chocolat Women's Women's Bagagerie Women's Diane Chocolat La Bagagerie Handbag Handbag Diane La Bagagerie qxAIna1wn(xyz,"3A4")
canvas bag handbag Blue cat Women's R shoulder messenger TOOGOO cute handbag with Women's small shopping bag ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)