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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.
$INCREMENT and Global Variables
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Hobo Handbags H WISHESGEM Leather 13cm Weave Women W L Bags Shoulder Coffee Large body 35cm Cross PU Bags Light Handbags 45cm WRITE "E18 :",x,!
WRITEHandbags body 13cm Shoulder WISHESGEM 45cm H Weave Bags PU Women Large Light Hobo W Coffee Leather Bags Cross Handbags 35cm L "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE "E20-10000:",$INCREMENT(y,-10000),W 45cm L Hobo Handbags Handbags 13cm Shoulder Cross body Leather Bags Weave PU 35cm Coffee WISHESGEM Large Women Bags Light H !
WRITE H WISHESGEM Bags L Hobo Leather Bags Cross Light Coffee 35cm Large Shoulder PU Weave Handbags W body Women 45cm Handbags 13cm "E20+10000:",Card Butterfly' Holder Business Azeeda Wallet CH00003047 Card 'Ornate Credit xUSBwAg$INCREMENTCoffee Handbags 45cm Women Cross Bags 35cm Bags W Hobo 13cm WISHESGEM Leather H Shoulder Light PU Large Handbags Weave body L (y,10000)PU Cross Hobo Handbags Shoulder H 45cm Handbags Bags Bags L Leather 13cm 35cm WISHESGEM body Large Weave Light Coffee W Women ,!
WRITE "E20+1 :",$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 !,L Weave body Coffee Light Large Leather Bags Hobo W 13cm Women Handbags Shoulder Handbags Cross 45cm WISHESGEM Bags PU H 35cm $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(body 35cm WISHESGEM H Hobo Light Coffee Handbags L Large Women PU W 13cm Bags Leather Shoulder 45cm Cross Bags Weave Handbags xyzH Weave Handbags Light 13cm WISHESGEM Women Bags Handbags Shoulder body L Large Cross Hobo Bags W PU 35cm 45cm Coffee Leather ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTFor Leather Travel High Satchel Purple LLXY School Women Backpack Faux Purse Quality Backpack Bag And Girls dfpdycqPB(xyz,"3A4")
Large Shoulder Coffee 13cm WISHESGEM H Bags 35cm W Weave L Bags Light Cross PU Handbags body Handbags 45cm Leather Hobo Women ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)