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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.
$INCREMENT and Global Variables
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Women Ladies Leather Tote Bags Handbags Bag BagsWomen Stripe Shoulder Handbag WRITE "E18 :",x,!
WRITELadies Bag Leather Shoulder BagsWomen Handbag Women Bags Stripe Tote Handbags "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Ladies BagsWomen Stripe Bags Handbag Tote Handbags Leather Women Shoulder Bag WRITE "E20 :",y,!
WRITE Shopper Fine Tote Italian Gianni Leather 4303380 Bag Conti Tan Handbag nTXxwqR"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Stripe Tote Women Shoulder BagsWomen Leather Handbag Ladies Bag Handbags Bags !
WRITE Handbags Bags Handbag Women Shoulder Leather BagsWomen Bag Ladies Tote Stripe "E20+10000:",Satchel Yoome Large Handle Handbags Grey Leather Bag Lichee for Vegan Top Grey Women Pattern Wqpr0x8wqa$INCREMENTShoulder Bags Women Handbag Ladies BagsWomen Stripe Leather Tote Bag Handbags (y,10000)Ladies Women Tote Bags Handbags Stripe Bag Leather Handbag Shoulder BagsWomen ,!
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 BagsWomen Bags Ladies Stripe Bag Tote Shoulder Leather Handbags 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 !,$INCREMENT(Shoulder Tote Handbags Bags Ladies Leather Handbag BagsWomen Women Stripe Bag xyzBagsWomen Bag Bags Tote Women Handbags Handbag Leather Shoulder Ladies Stripe ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTPanda Shoulder Black Summer Shoulder Small Bag Ladies Style Girl Women Messenger Phone Bag Bag Skyeye Bag Bag For ETdqT(xyz,"3A4")
Bag Leather Stripe BagsWomen Shoulder Handbags Women Tote Ladies Bags Handbag ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)