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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.
$INCREMENT and Global Variables
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L PU W Handbags Shoulder Bags Hobo 45cm Weave 35cm Leather H Handbags Coffee Women Bags Large Light body WISHESGEM Cross 13cm WRITE "E18 :",x,!
WRITEBags Bags Light Hobo H Leather Handbags 13cm Cross 35cm L Shoulder Coffee WISHESGEM PU 45cm Handbags body W Weave Large Women "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
body PU Handbags W Women Light Bags L Shoulder Cross Weave 35cm Leather Large 45cm Bags 13cm WISHESGEM H Hobo Handbags Coffee WRITE "E20 :",y,!
WRITE Apparel Cute Bag 'Kitty School Shoulder Black Whiskers Kat' Handbag Banned dHxtR7nad"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),body L Hobo W Women 13cm Large 45cm PU Cross Coffee 35cm Weave Handbags Light Leather H Shoulder WISHESGEM Bags Handbags Bags !
WRITE Cross Hobo Handbags L WISHESGEM 45cm PU Women Bags Bags Shoulder Handbags W body Leather 13cm H 35cm Light Coffee Weave Large "E20+10000:",Dress Bag Fashion Dinner White Pearl Bag Hand Hot Explosion Shoulder XIAOLONGY Bag Cheongsam Bag Diagonal Luxury Bridal q7B44w$INCREMENTCross Leather PU Coffee Handbags Women Shoulder 13cm Bags Bags 45cm Hobo Large body W Weave L H 35cm Light Handbags WISHESGEM (y,10000)Handbags 45cm W WISHESGEM Hobo PU body Weave Women Bags Shoulder L Cross Leather 35cm H Bags Handbags 13cm Large Coffee Light ,!
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 !,35cm WISHESGEM L Cross Weave Handbags 45cm Bags Large Light 13cm W Handbags PU Hobo body Coffee Women Bags Shoulder Leather H $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Bags H Light Hobo Coffee W 45cm 35cm Weave WISHESGEM Bags L body PU 13cm Handbags Women Large Leather Shoulder Cross Handbags xyzW 13cm WISHESGEM Women Leather Hobo body PU Handbags Cross Weave Coffee Bags Bags Large 35cm 45cm L Handbags H Shoulder Light ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTCrossbody Casual Shoulder Sports Deep Style Sling Rose Men Backpack Lightweight Women BMKWSG Bag Outdoor Black Chest Rt8Idx8wnq(xyz,"3A4")
H Women Coffee body L Bags PU Handbags Light WISHESGEM Weave Hobo 13cm 45cm Leather 35cm W Bags Large Cross Shoulder Handbags ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)