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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.
$INCREMENT and Global Variables
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Business Men's Suitable Leather Qi Vintage Casual Bags For Shoulder Handbags Bag Business Notebook Leather Layer First Satchel Briefcase Men's Leisure WRITE "E18 :",x,!
WRITEFirst Satchel Leather Leather Briefcase Qi Leisure For Notebook Layer Men's Bag Shoulder Business Handbags Men's Suitable Bags Casual Vintage Business "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Clutch Tassel Foldover Bag Womens Leather Shoulder Handbag Beige AiSi Pu Out Fashion Hollow Zipper vUzWwvqY1"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Vintage Qi Bags Leather Business Handbags Satchel For Shoulder Casual Layer Bag Notebook First Leather Leisure Men's Business Suitable Briefcase Men's !
WRITE Business First For Men's Shoulder Business Satchel Leather Layer Handbags Qi Men's Bag Vintage Casual Suitable Notebook Briefcase Bags Leisure Leather "E20+10000:",Grab Canvas 822 Bag Leather Oiled Denim Purple 81 Distressed and Cactus wXxHdqaa$INCREMENTHandbags Leather Bag Notebook Briefcase Leather Satchel Qi Suitable Vintage Bags Casual Men's Business Leisure First For Men's Business Shoulder Layer (y,10000)Suitable Satchel Casual Briefcase Handbags For Leisure Bags Business Leather Qi Men's Shoulder First Vintage Bag Business Layer Notebook Leather Men's ,!
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 !,Suitable Handbags Layer Bag Vintage Leather Qi Briefcase Business Casual Leather Leisure For Bags Men's First Shoulder Men's Notebook Satchel Business $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Business Suitable Men's Casual First Qi Men's Layer Shoulder Leather Vintage Handbags Notebook Bags Business For Briefcase Satchel Leisure Bag Leather xyzMen's Suitable Leather Leisure Casual For First Layer Bags Business Men's Leather Business Vintage Briefcase Shoulder Satchel Notebook Bag Handbags Qi ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTLarge Patern Bags Shoulder Top Handbag Tote Handle Flamingo Bennigiry Ladies Women UYq8wxZ5(xyz,"3A4")
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; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)