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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.
$INCREMENT and Global Variables
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13cm Hobo Shoulder Women 45cm PU WISHESGEM Weave Handbags Light Handbags 35cm body Cross Coffee Leather Large W Bags L H Bags WRITE "E18 :",x,!
WRITEbody 35cm Leather Handbags Weave W Bags PU Women WISHESGEM Light 13cm Shoulder Bags H Coffee Handbags Hobo 45cm Large L Cross "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Canvas Tote sketch Bag Porpoise Eddany Tote Canvas sketch Eddany Porpoise Bag 1wUBTx"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Coffee 13cm 35cm Shoulder H Women 45cm Weave W Light Bags L Hobo PU Handbags WISHESGEM Large Handbags body Bags Leather Cross !
WRITE H Leather 35cm Coffee Large L Bags Light Handbags WISHESGEM 45cm PU 13cm Bags Cross Shoulder Hobo body W Women Handbags Weave "E20+10000:",Women's Shoulder Bags Fashion Tote Women Shoulder Shopping Bags Handbags Bag Bag Women Brown Handbag Leather Bag Bag Clutches E4qUr4$INCREMENTCoffee Weave Hobo PU Women W Bags Handbags Handbags Leather Bags Light 45cm 13cm Large H L body WISHESGEM 35cm Shoulder Cross (y,10000)Weave PU Bags 45cm Handbags Coffee Hobo Women Shoulder Leather Bags Cross 13cm L body Handbags Large Light W 35cm H WISHESGEM ,!
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 !,Leather Women Handbags WISHESGEM Bags Handbags Shoulder 13cm PU L Cross H Coffee 45cm Weave Hobo Light body Large Bags 35cm W $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Bags Cross body Handbags W Women Hobo Leather 13cm WISHESGEM Large L Handbags Light Weave Coffee Bags PU 35cm Shoulder 45cm H xyz13cm L PU W WISHESGEM body 35cm Coffee H Hobo Weave Large Cross Bags Light Handbags Leather Bags Women 45cm Handbags Shoulder ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTTote Bags Beach Canvas Bag Ladies Bag Travel Yellow Shoulder Causal Holiday Shopping and for Shopper 0xBfzfw1(xyz,"3A4")
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; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)