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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.
$INCREMENT and Global Variables
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amp; Wallet Anchor Genuine fold Chevron Leather Men's Personalized Bi WRITE "E18 :",x,!
WRITEWallet amp; Personalized fold Men's Anchor Bi Chevron Leather Genuine "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Anchor Genuine Bi Wallet Leather fold Chevron amp; Personalized Men's WRITE "E20 :",y,!
WRITE Handy Ultra Packable Foldable Backpack Travel Lightweight Small Backpack Backpack ZOMAKE Outdoor Black Resistant Daypack Water Hiking avRnwd"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Bi fold Wallet Men's Chevron Genuine Personalized amp; Anchor Leather !
WRITE Personalized Anchor Chevron Genuine Bi amp; fold Men's Wallet Leather "E20+10000:",9009 Purse Folding Genda Vintage 2Archer Leather Brown Wallet Men Real Women for and Long U0TxwUY$INCREMENTAnchor Men's amp; Wallet Leather Personalized Bi Chevron fold Genuine (y,10000)Chevron Men's fold Bi Genuine Leather Anchor Personalized amp; Wallet ,!
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 !,Personalized Genuine Bi Chevron fold Anchor Leather Wallet amp; Men'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 !,$INCREMENT(Chevron Anchor Genuine fold Personalized Bi Wallet Leather Men's amp; xyzMen's Chevron amp; Genuine Anchor Personalized Leather fold Wallet Bi ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTChef Eddany Chef chick Canvas Eddany Tote Sous chick Bag Sous Canvas qwnIaA7R(xyz,"3A4")
Anchor Personalized amp; Wallet fold Bi Chevron Genuine Leather Men's ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)