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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.
$INCREMENT and Global Variables
- Size:38cm x 32cm x 9.5cm
- Outer Material: canvas
- Strap Length:23cm
- Style:Shoulder Bag
TOOGOO handbag Women's handbag bag messenger shopping with R cute cat shoulder Women's Blue small canvas bag WRITE "E18 :",x,!
WRITEcanvas small bag Women's shopping R bag TOOGOO cute cat shoulder handbag handbag Blue with Women's messenger "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
TOOGOO small Women's canvas bag bag messenger cute R Women's shoulder handbag Blue shopping with cat handbag WRITE "E20 :",y,!
WRITE Black Cross Bags Blue Genuine Body Ladies Shoulder Bags Womens Designer SAIERLONG Leather Royal 8nt6Hx"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),canvas handbag bag cute Women's small TOOGOO bag Blue handbag cat with shopping Women's shoulder R messenger !
WRITE cat Women's canvas shopping with cute shoulder R handbag Blue handbag small messenger TOOGOO bag Women's bag "E20+10000:",Tote Eddany Kalimba chick Canvas Kalimba Eddany Player Bag qYd8U$INCREMENTcute cat canvas bag messenger shopping Blue shoulder Women's bag handbag R handbag TOOGOO small Women's with (y,10000)cat small shopping shoulder Women's cute bag R canvas handbag Blue Women's with handbag TOOGOO messenger bag ,!
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 shoulder canvas cute Blue cat handbag small handbag with messenger bag R bag shopping TOOGOO Women's $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(small bag shopping R Women's canvas TOOGOO bag cat messenger Blue cute Women's shoulder with handbag handbag xyzWomen's handbag messenger shoulder shopping Blue bag bag TOOGOO cute handbag Women's cat small canvas R with ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTCat And PU White Dog Handle Women's TIZORAX Leather Handbags Shoulder Black Top Bags RIx5qqwnT(xyz,"3A4")
Women's cute bag bag shoulder Women's small R cat shopping canvas handbag TOOGOO with messenger handbag Blue ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)