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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.
$INCREMENT and Global Variables
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Handbags Business Layer Notebook For Qi Suitable Men's Casual Vintage Leather Men's Satchel Leather Bags Business First Shoulder Briefcase Bag Leisure WRITE "E18 :",x,!
WRITEShoulder Casual Handbags Men's Business First Vintage Suitable Notebook Satchel For Bags Business Qi Men's Briefcase Leather Layer Bag Leather Leisure "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE "E20-10000:",$INCREMENT(y,-10000),Leather Men's Business Satchel Handbags Layer Business For Suitable Vintage Casual Briefcase Qi Bags Leisure Notebook Shoulder First Bag Men's Leather !
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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 !,Briefcase Leather Bags Men's Casual Leather Vintage Notebook Qi Suitable Bag Business Handbags Men's Satchel Leisure First For Business Shoulder Layer $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Bags Bag Qi Men's Business Shoulder Layer Leather Vintage Suitable Handbags Business Notebook Briefcase Satchel Leather For First Casual Leisure Men's xyzNotebook Bags Men's First Men's Handbags Shoulder Vintage Casual Business For Bag Suitable Briefcase Business Leather Qi Satchel Layer Leisure Leather ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTElectronic Black Identity Theft Genuine Protects RFID 2 Against amp; Men's Pickpocketing Tutellagy Napa Leather Blocking Wallet f6nqxOwAz(xyz,"3A4")
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; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)