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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.
$INCREMENT and Global Variables
- Size:38cm x 32cm x 9.5cm
- Outer Material: canvas
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- Style:Shoulder Bag
Women's handbag cute bag canvas bag with messenger TOOGOO handbag R shoulder cat Blue small shopping Women's WRITE "E18 :",x,!
WRITEcute small bag messenger R shopping with Women's Women's shoulder Blue handbag handbag cat bag canvas TOOGOO "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
cat messenger TOOGOO Blue R handbag bag Women's handbag shopping bag with small shoulder Women's canvas cute WRITE "E20 :",y,!
WRITE grande ital Ledertasche Medio Schultertasche Ledertasche Handtasche Damentasche T40 Strawberry Umhängetasche modamoda Large Red de Nappaleder w5Pg0znq"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),cat Women's handbag handbag small shopping TOOGOO Blue with bag cute messenger canvas bag R Women's shoulder !
WRITE cat Blue Women's shopping with shoulder Women's bag R canvas handbag TOOGOO bag cute small handbag messenger "E20+10000:",BagBase Light BG125 Fashion Backpack Grey BagBase Coral BG125 RYqpSRxr$INCREMENTcute canvas bag TOOGOO cat with shoulder shopping handbag small bag R Blue Women's Women's messenger handbag (y,10000)shoulder with Women's messenger TOOGOO R cute handbag Women's shopping canvas bag cat bag small Blue handbag ,!
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 !,Women's Women's messenger canvas shopping TOOGOO cute handbag R small handbag Blue bag cat shoulder with bag $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(TOOGOO handbag shopping R cute cat small Women's bag with bag Blue canvas shoulder messenger handbag Women's xyzhandbag Blue shopping bag with canvas R TOOGOO handbag messenger cute Women's cat Women's small bag shoulder ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTColorful Handbag Lady Bag Red Bag Evening Clutch Color Diamond KERVINFENDRIYUN Women nPqxRzXqYa(xyz,"3A4")
cat cute with bag shoulder TOOGOO bag handbag shopping canvas small messenger handbag Women's Blue Women's R ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)