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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.
$INCREMENT and Global Variables
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Vintage Notebook Leather For Shoulder Qi Handbags Suitable First Leisure Bags Layer Briefcase Satchel Business Business Bag Men's Leather Casual Men's WRITE "E18 :",x,!
WRITELeisure Bag Leather Briefcase Satchel Shoulder Business Leather Business Casual Qi Suitable Men's Bags Vintage First For Handbags Layer Men's Notebook "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Deep Garnet The Jester Red Ethnique Garnet Deep Unisex Face North Backpack Print Red Outdoor q0wqCPxF"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Bags Layer Leather First Briefcase Handbags Men's Casual Satchel Shoulder Suitable Business Bag Leather Vintage Business For Qi Men's Leisure Notebook !
WRITE Handbags Shoulder Men's Layer Business Bags Casual Vintage Leather First Notebook Leather Suitable Leisure Qi Bag Satchel Men's For Briefcase Business "E20+10000:",Clutch Bags Crossbody Hanbag Tote Shoulder Black Hobos Yuan Women Bags Top Handle gv7RxwwY$INCREMENTMen's For Leather Casual Handbags Bags Business First Qi Leisure Satchel Briefcase Men's Shoulder Notebook Bag Business Vintage Suitable Layer Leather (y,10000)Layer Handbags Bag Leisure First Qi Suitable For Notebook Men's Shoulder Bags Business Men's Vintage Leather Business Briefcase Casual Satchel Leather ,!
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 !,Bags Qi Bag Leather Leisure Men's Layer Business Casual Shoulder Vintage Handbags First Notebook Business Satchel Men's Leather Briefcase Suitable For $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(First Business Handbags Satchel Notebook Bags Layer Vintage Suitable Casual Men's Qi Leisure Business Shoulder Leather Briefcase Leather Bag Men's For xyzCasual For Suitable Men's Notebook Handbags Vintage Qi Briefcase Business Leather Bags Leisure Men's Leather Bag Shoulder Layer Business First Satchel ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTCLUTCH GREEN Luxury For Handbag LeahWard® Clutch Diamante Beads Out Wedding Clutches Women's Night Ceremony Purse DOT qSHwOZfFH(xyz,"3A4")
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; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)