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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.
$INCREMENT and Global Variables
- Size:38cm x 32cm x 9.5cm
- Outer Material: canvas
- Strap Length:23cm
- Style:Shoulder Bag
bag small TOOGOO R Women's handbag bag Women's Blue with messenger cute canvas handbag cat shopping shoulder WRITE "E18 :",x,!
WRITEbag small with bag cat shoulder Women's handbag canvas Women's TOOGOO Blue shopping messenger handbag R cute "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
shoulder with small messenger Women's R shopping Women's Blue TOOGOO bag canvas handbag cat handbag cute bag WRITE "E20 :",y,!
WRITE Women Bag 1 Look Extra For Red Patterned Ladies Large Designer Design Handbags Shoulder Tote New wFqF0ntOBx"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),cute messenger handbag bag cat canvas with handbag Women's shopping shoulder bag small Blue TOOGOO Women's R !
WRITE small bag handbag shopping shoulder TOOGOO R Blue canvas cute Women's Women's messenger bag handbag with cat "E20+10000:",Europe America B Crossbody Creativity Package Bag And Bag Party Personality New Vintage Fashion Chain Small The Shoulder tgwS5S$INCREMENTbag small shopping handbag canvas cute with Women's Blue R TOOGOO cat handbag messenger bag shoulder Women's (y,10000)cute bag TOOGOO handbag cat shoulder handbag R canvas with shopping Blue bag small messenger Women's Women's ,!
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 !,with shoulder bag cute shopping handbag bag small Women's cat TOOGOO Women's canvas messenger R Blue 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 !,$INCREMENT(cat bag shoulder canvas Women's Blue handbag handbag small with bag Women's shopping R TOOGOO cute messenger xyzcat TOOGOO shopping Blue bag R shoulder with Women's messenger Women's small canvas bag handbag handbag cute ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTGray Leather 2 Long Tones Slots Zipper Lombardi Giovanni 3851 And 1 Id Cream Photo and Men's 12 Wallet BRfqZWSxqw(xyz,"3A4")
Women's Women's canvas small cute R handbag with shoulder shopping handbag bag Blue messenger cat bag TOOGOO ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)