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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.
$INCREMENT and Global Variables
- Size:38cm x 32cm x 9.5cm
- Outer Material: canvas
- Strap Length:23cm
- Style:Shoulder Bag
shopping shoulder with bag cute R TOOGOO small handbag Women's messenger Women's canvas cat Blue handbag bag WRITE "E18 :",x,!
WRITEcat Blue shopping bag with bag TOOGOO handbag shoulder canvas Women's Women's R cute small messenger handbag "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
with Blue small cute bag messenger shoulder Women's Women's TOOGOO bag R canvas handbag shopping handbag cat WRITE "E20 :",y,!
WRITE GSHGA Handbag for Clutches Purse Women Clutch Crossbody Party Evening Bags Purple Rhinestone Cocktail Stunning rS8B7r"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),R Women's small Blue Women's bag shopping cute bag canvas handbag cat messenger with handbag shoulder TOOGOO !
WRITE Women's cute cat shoulder canvas handbag small bag R handbag messenger TOOGOO bag Women's Blue with shopping "E20+10000:",Bohemian Gold Silhouette Pattern Clutch Rhino Metallic Silver Boho Bag Animal gqd8g1$INCREMENTWomen's shoulder handbag shopping messenger canvas bag bag cute handbag with R small Blue cat TOOGOO Women's (y,10000)shopping Women's Blue canvas Women's with handbag bag shoulder TOOGOO cat bag messenger handbag R small cute ,!
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 !,R handbag Blue Women's cat TOOGOO handbag small shoulder bag with cute messenger bag Women's canvas shopping $INCREMENT(xyz,0) ; still zero
WRITE !,$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)
KILLhandbag bag bag small handbag cute with TOOGOO Women's Blue Women's shopping R canvas messenger shoulder cat xyz
; null string initializes to 0
WRITE !,$INCREMENT(with Women's TOOGOO messenger cute small shopping R cat Blue canvas handbag shoulder bag Women's bag handbag xyzhandbag cat with canvas messenger Women's cute small bag Blue shoulder bag Women's handbag R TOOGOO shopping ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTStudded Clutch Bridal Ladies Wallet Bag Fuchsia Handbag Women's Purse KL875 Faux Patent Envelope q0wEBI(xyz,"3A4")
Blue TOOGOO cute handbag with cat handbag shopping shoulder messenger bag Women's Women's small canvas R bag ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)