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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.
$INCREMENT and Global Variables
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13cm Weave WISHESGEM Coffee Cross Bags 35cm H Handbags Women body Bags Hobo W Shoulder Light PU Large 45cm Leather Handbags L WRITE "E18 :",x,!
WRITEL Handbags Large 13cm Weave Bags PU Light Bags Hobo H Cross Handbags W 45cm Coffee WISHESGEM Leather Women Shoulder body 35cm "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Evening Bag Women's Casual Cosmetic Mini Square Clutch Fashion Bags Small Red Bag nvzv8"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Coffee Handbags H Bags Handbags 45cm Large Weave Bags Light Leather Women 13cm Hobo W WISHESGEM L Cross PU 35cm Shoulder body !
WRITE Bags Handbags Coffee Light Bags 13cm Cross Large Women L Shoulder PU 45cm Weave Leather 35cm WISHESGEM Hobo Handbags H W body "E20+10000:",Boy Whale Cartoon Toddler Girls Bag Cute Kindergarten Pre Sea Backpack ZZKKO School Kids for A7qgw$INCREMENTBags Large 45cm WISHESGEM Cross Women body Handbags 35cm Light L Weave Coffee H W Hobo 13cm Shoulder Bags Leather Handbags PU (y,10000)Hobo Coffee 35cm L PU Handbags W Bags Leather H Women 13cm Bags body Light Handbags 45cm Large Weave WISHESGEM Cross Shoulder ,!
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 !,W body Bags PU Weave Coffee Light Women Hobo Large L Shoulder Handbags 45cm H 13cm 35cm Handbags Leather Cross Bags WISHESGEM $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Hobo Shoulder Bags 45cm WISHESGEM body Coffee 13cm Large Women W PU Leather Bags Handbags L 35cm Weave H Light Handbags Cross xyz13cm Women L W Leather 35cm Handbags PU Weave Cross 45cm Hobo Light Coffee body Bags Bags Shoulder Handbags WISHESGEM H Large ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTWocharm Blue Messenger Shoulder Mini Monkey Layers Wristlet Handbag Deep Womens 3 Crossbody Purse fZFfPUx(xyz,"3A4")
body Leather Handbags Women Large 45cm Hobo L PU Light Handbags H Bags 35cm Shoulder Cross Weave Bags W WISHESGEM 13cm Coffee ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)