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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.
$INCREMENT and Global Variables
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PU Weave Cross H 45cm Shoulder W Large body 13cm Bags Bags WISHESGEM Handbags Coffee Light Leather Handbags 35cm L Hobo Women WRITE "E18 :",x,!
WRITEBags L Handbags 13cm body 45cm Bags WISHESGEM W PU Hobo Women Shoulder H Leather Weave 35cm Light Handbags Large Coffee Cross "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Purses Wedding Apricot Ladies Chain Suede Evening Clutch Womens Elegant Dress Wallet Bags Bag Shoulder tvwxqO5S"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Hobo L Bags PU H Bags body Light Handbags 13cm Cross Weave Large Women 45cm Handbags Coffee W 35cm Shoulder WISHESGEM Leather !
WRITE Leather Large PU 35cm Coffee Cross 45cm Handbags L 13cm Bags Handbags body Bags W WISHESGEM Hobo Light Shoulder H Weave Women "E20+10000:",Bag Functional Purse Multi Handbag PU Red Crossbody Leather Pocket CO7wqg$INCREMENTPU Weave H body Bags 45cm Light Hobo Handbags Shoulder 13cm L WISHESGEM Coffee Large Women W 35cm Cross Leather Handbags Bags (y,10000)Cross Leather Women Shoulder 13cm PU Light W Handbags WISHESGEM body L Weave Coffee Bags Hobo Large Bags Handbags 35cm H 45cm ,!
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 PU Large Weave Bags 45cm W 35cm Cross L Hobo Handbags body Coffee 13cm Leather Bags WISHESGEM Light Shoulder H Women $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Weave Coffee PU Bags H Handbags Cross Shoulder Handbags WISHESGEM Women Bags L W 45cm Light Large Hobo Leather 35cm 13cm body xyzWeave 45cm Coffee L 35cm Large Women Light Shoulder Leather H Bags Hobo Cross WISHESGEM Handbags PU Handbags body W 13cm Bags ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTBrown Coocle Women's One Cross Black Women's Coocle Body Bag Cross Size FvZqFxg(xyz,"3A4")
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; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)