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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.
$INCREMENT and Global Variables
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Men's Business Shoulder Leather Men's Casual Layer Briefcase Handbags Vintage Leather Bag Business Bags Satchel Suitable For First Leisure Notebook Qi WRITE "E18 :",x,!
WRITEHandbags Business Leather Bag For Briefcase Shoulder Men's Notebook Leisure Vintage Suitable First Satchel Leather Qi Layer Casual Business Men's Bags "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE QEQE 2 Dinner Bag Wild Women's Ladies Clutch Shoulder Bag European Bag Exquisite Messenger Striped Color American Fashion And 3 rrnFqUd"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Men's For Suitable Leather Men's Layer Casual Satchel Leather Bags Notebook Qi Business Leisure Business Handbags Bag Shoulder First Vintage Briefcase !
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WRITE "E20+1 :",$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 !,Handbags Casual For Suitable Qi Shoulder Business Men's Leather First Satchel Leisure Notebook Briefcase Layer Bag Men's Vintage Business Leather Bags $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Business Suitable Briefcase Vintage For Notebook Casual Satchel Shoulder Leather First Bags Men's Layer Qi Business Leather Bag Handbags Men's Leisure xyzHandbags Business Suitable Bag Qi For Notebook Casual Vintage Business Men's Leisure Leather Leather Bags Men's Satchel Briefcase Shoulder Layer First ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTDogs Tote Three Three Cute Bag Cute ZqptnIwFx(xyz,"3A4")
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; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)