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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 */
Bag JPFCAK E Leisure Fashion Messenger Shoulder Lady Shoulder City Trend Handbags Bag Bag RqFRr7S
You can use the
function to return the current value of a variable.
$INCREMENT and Global Variables
evening hand 2 fashion ladies and Color bag 3 Women's banquet Europe QEQE dinner bag bag America WRITE "E18 :",x,!
WRITE2 banquet dinner Color evening bag bag hand and Women's 3 bag America fashion QEQE Europe ladies "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
banquet 3 bag Color America and hand Women's evening bag fashion QEQE Europe bag dinner ladies 2 WRITE "E20 :",y,!
WRITE Purses Pearls Bag Women Handbags Clutches Blue Floral Clutch Evening F5wnnSBfUq"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),hand Women's bag banquet and Europe dinner 3 QEQE evening ladies America Color bag bag 2 fashion !
WRITE 3 Europe evening 2 Women's ladies Color and bag dinner America QEQE bag fashion bag hand banquet "E20+10000:",Bags and Handbags NICOLE Designer amp; Ladies Green Leather DORIS Purses Tote Womens PU wPBqCWRw$INCREMENTbag evening Color hand 2 and bag Women's banquet ladies America QEQE bag Europe 3 dinner fashion (y,10000)and dinner Europe bag bag 2 QEQE 3 bag Women's ladies America hand Color evening banquet fashion ,!
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 !,2 3 bag and dinner hand evening bag QEQE Women's America Europe banquet ladies bag fashion Color $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(evening Europe bag bag dinner America and QEQE 3 2 fashion banquet hand ladies bag Women's Color xyzdinner Women's ladies QEQE bag fashion bag bag Color America 3 Europe hand evening and 2 banquet ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTEvening Crystal Womens Textured Studded Silver Elegent Clutch Rose Damara xpdYBwB(xyz,"3A4")
2 Color bag fashion bag dinner bag Women's QEQE 3 banquet America evening Europe hand and ladies ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)