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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.
$INCREMENT and Global Variables
Men's Woodland 15" Military Bag Green Messenger Outdoor CP Shoulder Molle Laptop TACVASEN WRITE "E18 :",x,!
WRITELaptop 15" Green Men's Molle CP Outdoor Military Bag TACVASEN Woodland Messenger Shoulder "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Woodland Messenger 15" Military Laptop Molle Bag Shoulder TACVASEN CP Men's Outdoor Green WRITE "E20 :",y,!
WRITE Per Realistic Purse tiger A Small Style Animal Available Face Soft Coin 3 Ployester rRdrFw0q"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Molle Laptop Green Woodland Military Men's Outdoor CP Bag Messenger 15" TACVASEN Shoulder !
WRITE Bag Men's Laptop Outdoor Military Molle Woodland Green 15" Shoulder TACVASEN Messenger CP "E20+10000:",Wallets Dark Credit Wallet Men's Card Slim Leather Holder Artmi Handmade Thin Brown Bifold Xpqwa$INCREMENTTACVASEN 15" Molle Messenger CP Green Shoulder Woodland Bag Outdoor Men's Military Laptop (y,10000)Shoulder 15" TACVASEN Laptop Messenger Molle CP Woodland Bag Men's Green Outdoor Military ,!
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 !,TACVASEN Outdoor Men's Woodland Laptop Messenger Shoulder 15" Molle Military CP Bag Green $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Molle Bag Messenger Shoulder CP Men's Woodland 15" TACVASEN Laptop Military Green Outdoor xyz15" Woodland Bag Outdoor Messenger Laptop CP Military Molle Green Men's TACVASEN Shoulder ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTWoven Shoulder Beige Tassel Beach Bag Fashionable Women's Ouvin One Pv7TTB(xyz,"3A4")
Shoulder Men's Military Molle CP TACVASEN Laptop Woodland Messenger Green Bag Outdoor 15" ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)