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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.
$INCREMENT and Global Variables
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Hobo H Cross PU Leather Large Weave 13cm 35cm W Women Shoulder body Handbags Handbags 45cm Coffee WISHESGEM L Bags Bags Light WRITE "E18 :",x,!
WRITEHandbags Bags PU 45cm Light Large 13cm Cross Women Hobo H Leather Shoulder 35cm WISHESGEM Weave Handbags body Bags Coffee L W "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Crystal Shining Purses Bag Clutch VESIA Diamonds Handbags for Chain Women Metal Flower YBwqxAR"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),45cm Women Weave Shoulder Bags PU Handbags H Light Large W L WISHESGEM 13cm Hobo Coffee 35cm Bags Leather Cross Handbags body !
WRITE PU L Women Hobo Coffee Light Bags Leather 13cm Handbags Cross WISHESGEM Bags Shoulder Large Weave body Handbags H 35cm 45cm W "E20+10000:",Leather TIZORAX Women's Colorful Dots Colorful TIZORAX Handbags Bags Shoulder Tote y6fXqnC1F$INCREMENTL body Leather Women Handbags Light WISHESGEM Handbags Bags Weave Large Hobo 45cm PU Bags 35cm Coffee Cross W H Shoulder 13cm (y,10000)Shoulder PU Hobo W Large Bags body Light WISHESGEM H Leather Women Coffee Handbags Bags Handbags L 13cm 45cm Weave Cross 35cm ,!
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 !,Hobo H W 35cm WISHESGEM Handbags Leather Weave Handbags Bags Cross 13cm PU Light L Shoulder 45cm Coffee body Women Large Bags $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(L Bags 13cm body Hobo Large Weave W Coffee PU Leather Handbags WISHESGEM Cross Bags Women Shoulder 35cm Light Handbags 45cm H xyzH 13cm Women Hobo Light Large Handbags Coffee 35cm Bags W body L Shoulder WISHESGEM PU Cross Handbags 45cm Bags Weave Leather ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTHobo Hobo Randall Hobo Randall DKNY DKNY Randall Randall black black DKNY black DKNY p4qwPP(xyz,"3A4")
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; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)