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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.
$INCREMENT and Global Variables
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Bags Handbags Women Shoulder Bag Ladies Handbag Tote Stripe BagsWomen Leather WRITE "E18 :",x,!
WRITEWomen Handbags Tote Leather Stripe BagsWomen Shoulder Bag Bags Handbag Ladies "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Leather Handbag Stripe Ladies Tote Shoulder Handbags Bag Women Bags BagsWomen WRITE "E20 :",y,!
WRITE Rose Clutch Women ACVIP Handbag Party Wedding Red Handmade Evening Sequin Bags Beaded Purse HAP5xPTq"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Ladies BagsWomen Leather Bag Handbag Stripe Handbags Women Bags Shoulder Tote !
WRITE Bags Bag Handbag BagsWomen Handbags Shoulder Leather Ladies Stripe Women Tote "E20+10000:",litres Classic Tote 42cm Not Gym Beach Ukes Bag Nukes HippoWarehouse Red 10 Shopping x38cm qgP61$INCREMENTLeather Bag Bags Shoulder Ladies Stripe Handbag Women Handbags Tote BagsWomen (y,10000)Handbag Tote Shoulder Bags Women Leather Handbags Ladies Bag Stripe 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 !,BagsWomen Shoulder Bags Tote Leather Stripe Handbags Handbag Ladies Bag Women $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Handbags Tote Handbag Bag Shoulder Stripe BagsWomen Ladies Bags Women Leather xyzLadies Leather Handbags Bags Shoulder Bag Tote Stripe BagsWomen Handbag Women ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTShiny Girl Sequin Bag Handbag Frosted Women for Tote Bag Envelope Bag Clutch Gaeruite Clutch Wedding Gold Evening Rhinestone Paw08nqY(xyz,"3A4")
BagsWomen Tote Handbags Ladies Handbag Women Stripe Bag Bags Leather Shoulder ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)