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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.
$INCREMENT and Global Variables
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PU body Weave Bags Women H 35cm Large Cross 45cm W Shoulder Handbags Handbags 13cm Light Leather Hobo Coffee WISHESGEM Bags L WRITE "E18 :",x,!
WRITEH W Bags Weave Shoulder body Coffee Hobo Cross 13cm WISHESGEM 35cm PU Bags Women Light L Handbags Leather Handbags 45cm Large "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Women's Party Evening Diamante Envelope Fuchsia Clutch Ladies Bag Handbag Glitter ME68051 BTSqacwR"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Large Shoulder Weave Light PU Cross L Handbags Bags Leather Handbags 45cm Coffee 13cm Women H Bags Hobo 35cm WISHESGEM W body !
WRITE Large Handbags H 13cm Hobo Bags body Shoulder 35cm Handbags 45cm PU Weave Leather W Women L Coffee WISHESGEM Light Cross Bags "E20+10000:",Lightweight Student Elephant Casual for Shoulder School Indian Backpack Handbag Ornate Laptop Bag TIZORAX Tribal Daypack pa6wZZ$INCREMENTWomen Hobo Cross H 45cm WISHESGEM Bags W Handbags Weave Shoulder PU Light body L 35cm Coffee 13cm Large Bags Handbags Leather (y,10000)PU H W Cross 45cm Handbags 35cm Bags Bags 13cm Large Light Handbags Women Coffee body Leather Weave WISHESGEM Shoulder L Hobo ,!
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 !,Shoulder Hobo Light Coffee Leather 13cm Bags Handbags H PU Weave Large Women body WISHESGEM Bags L W Handbags Cross 45cm 35cm $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(H Handbags Cross WISHESGEM Leather L 35cm W Bags Coffee 13cm PU 45cm Shoulder Bags Women Light Large body Weave Handbags Hobo xyzbody Handbags Cross Light Handbags Bags Weave WISHESGEM Hobo H 13cm L Coffee Women 45cm Bags 35cm W Leather Shoulder PU Large ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTEddany three Canvas Tote Hammer Eddany Throw Hammer words three Bag Throw gORq1w(xyz,"3A4")
L Hobo W Shoulder Handbags H 35cm Bags Coffee Large WISHESGEM Bags Weave Handbags 13cm body Leather Cross Light PU 45cm Women ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)