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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.
$INCREMENT and Global Variables
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Hobo PU 35cm Handbags H body 45cm Handbags Weave Shoulder Bags Coffee W L Women Large WISHESGEM Cross Light Leather 13cm Bags WRITE "E18 :",x,!
WRITELarge H Women W Handbags Hobo PU Shoulder WISHESGEM Handbags 35cm L Light Coffee Weave body Cross 45cm Bags Leather Bags 13cm "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
body Handbags H Light Cross W Large PU Bags Coffee Hobo Leather 35cm Shoulder L Handbags Weave 13cm WISHESGEM 45cm Women Bags WRITE "E20 :",y,!
WRITE Ladies With Evening New Handbag Silver Beaded Crystal For 1 Women Designer Wedding Chain Sparkly Party Clutch Bag Club Design EwqA8F"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),L H Coffee W Handbags 13cm WISHESGEM Bags Weave Women Shoulder Hobo Large Leather body 35cm Bags PU 45cm Handbags Cross Light !
WRITE Leather Shoulder Coffee 35cm Weave WISHESGEM H Light Hobo L PU Handbags Large Bags 45cm Women body 13cm Cross Handbags W Bags "E20+10000:",Holland Money Flag tone Gold Cufflinks Set Gift Clip Zuid Engraved gxq7wdBq$INCREMENTShoulder 13cm Leather Bags H Coffee PU WISHESGEM Women Handbags body Large Cross W Handbags L 45cm Hobo Light Weave 35cm Bags (y,10000)Light Weave PU 13cm Coffee Large Women Bags Cross L W 35cm Shoulder Hobo Handbags Leather 45cm body H Handbags Bags 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 !,35cm PU Handbags Cross Leather Hobo 13cm Large Light Coffee Handbags Shoulder H WISHESGEM Women 45cm Bags W L Weave Bags body $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(W WISHESGEM Bags Weave Light L Leather Shoulder Bags 13cm Handbags Women H Large Hobo Handbags 35cm 45cm Coffee body Cross PU xyzBags WISHESGEM 35cm Leather body Handbags Bags W Cross 45cm PU Weave Shoulder Handbags L Hobo Light Women Coffee 13cm Large H ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTCredit Purse Coin Card Id Wallet Window Perotti Brown Leather and Tony Italian Iw716wqY(xyz,"3A4")
Cross 35cm body PU Bags Shoulder WISHESGEM L Weave Women Hobo Bags Handbags 13cm W Leather H Handbags Light Coffee Large 45cm ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)