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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.
$INCREMENT and Global Variables
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Large 13cm W WISHESGEM Hobo Coffee 35cm L Leather Cross body Bags Weave 45cm Light H Women Shoulder Handbags Bags PU Handbags WRITE "E18 :",x,!
WRITEHobo Coffee 45cm Handbags Women Shoulder Weave Leather Bags Handbags Large PU Bags 35cm L 13cm body Cross H W WISHESGEM Light "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Bag Black Travel Multifunction Purse Women Crossbody Casual Daypack DLMBB Backpack Shoulder Canvas wUtP4qH"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Cross Coffee Women Handbags W Handbags Shoulder 45cm body Leather Large 13cm 35cm Weave WISHESGEM H Bags Bags L Hobo Light PU !
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WRITE "E20+1 :",$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 !,H L 45cm Handbags Hobo Coffee Leather 35cm Bags Bags WISHESGEM Light Weave Women Shoulder 13cm Handbags Cross PU W Large body $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(13cm Cross L Light 35cm Hobo H body Women Handbags Bags Large W Leather WISHESGEM Shoulder Coffee 45cm Handbags Weave PU Bags xyzCoffee 13cm Light L Cross Hobo 45cm Shoulder H Leather W Weave WISHESGEM PU 35cm Handbags Bags Bags body Handbags Large Women ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTShopping Surnames RPS Bag Just Natural Married Personalised Date Cotton HtwqWAOt(xyz,"3A4")
H body WISHESGEM L Large Coffee 35cm Handbags Handbags 45cm Shoulder 13cm Leather Light Women Cross Bags Weave Hobo PU W Bags ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)