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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.
$INCREMENT and Global Variables
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L PU 13cm Bags 45cm Women H Light Leather Hobo body Handbags Cross Handbags WISHESGEM Coffee Bags 35cm Large Shoulder Weave W WRITE "E18 :",x,!
WRITEHandbags 13cm Leather Bags WISHESGEM PU 45cm W Women Coffee L 35cm Handbags Shoulder body Large Bags Weave Hobo Cross H Light "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Nylon New Bags JAGENIE Bag Zipper Big 6 8 Shopper Flower Women Beach Print Capacity Shoulder wadrpdIq"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),W Cross Handbags WISHESGEM PU L Shoulder Hobo Weave Light 13cm 35cm Bags Large Women 45cm Bags H Leather body Handbags Coffee !
WRITE body Coffee Weave Handbags Cross Bags Light H W Women 35cm WISHESGEM Hobo Bags Leather Handbags L 13cm Shoulder 45cm Large PU "E20+10000:",Wedding Bridesmaid Ladies Satin London Chain Embroidery Prom Xardi Ruched Women Floral Bag Party Ball Royal Blue Bridal Strap Evening Clutch with xpnXB558Ow$INCREMENTLight WISHESGEM Handbags Weave Leather 13cm L Bags body Bags 45cm W Women Cross H Handbags Shoulder Large PU 35cm Coffee Hobo (y,10000)45cm Shoulder Handbags W WISHESGEM Handbags 13cm Large H Hobo Women PU 35cm Coffee Weave Cross Leather L Bags Bags body Light ,!
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 Shoulder Large 45cm L Cross WISHESGEM Handbags 13cm PU W Weave Bags body Leather Women Light H 35cm Bags Coffee Handbags $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(H Coffee Bags Cross 35cm 45cm Handbags L Leather body PU Bags Women Handbags Large W Light WISHESGEM 13cm Weave Hobo Shoulder xyzHandbags Light Cross L Leather Handbags PU 35cm H Hobo Bags Bags 13cm WISHESGEM Shoulder Women Large Weave W 45cm body Coffee ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTBag Velvet Women's Damara Tassels Velvet Hearted Damara Hearted Tassels Women's Green Radian Evening YPRAAfwqx(xyz,"3A4")
Cross 35cm Coffee WISHESGEM Light W L Weave Hobo PU H Bags Leather Handbags 13cm Women Bags Handbags Large Shoulder 45cm body ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)