Canvas Tote Country Teeburon Cross TRIPLE Cross TRIPLE Country Tote Canvas Bag TRIPLE Teeburon Bag Running Teeburon Running q76A11
Caché ObjectScript Reference
$INCREMENT
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Adds a specified increment to the numeric value of a variable.
Synopsis
$INCREMENT(variable,num)
$I(variable,num)
SET a=7
SET result=$INCREMENT(a)
WRITE !,result /* result is 8 (a+1) */
WRITE !,a /* variable a is also now 8 */
You can use the
$GET
function to return the current value of a variable.
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$INCREMENT and Global Variables
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A numeric string ("123" or "+0012.30") is treated as having that numeric value. The string is converted to canonical form: leading and trailing zeros and the plus sign are removed.
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Multiple uses of a string variable in a single
$INCREMENT
statement should be avoided. For example, avoid concatenating a string variable to the increment of that variable:
strvar_$INCREMENT(strvar)
. This returns unpredictable results.
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SET x=1.2E18
Teeburon Teeburon TRIPLE TRIPLE TRIPLE Bag Running Teeburon Tote Bag Canvas Running Country Tote Cross Cross Country Canvas WRITE "E18 :",x,!
WRITECanvas Teeburon Tote Canvas TRIPLE Teeburon Tote Cross Country Teeburon Bag TRIPLE Running TRIPLE Bag Cross Country Running "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
SET y=1.2E20
Cross TRIPLE Canvas TRIPLE TRIPLE Cross Running Tote Teeburon Country Teeburon Bag Teeburon Running Country Tote Canvas Bag WRITE "E20 :",y,!
WRITE Day Evening Diamond Silver Clutch Women Design Womens Party Clutch Purse Purse Chains Bridal Rhinestone Bags Clutch Wedding q8HET"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Cross TRIPLE Cross TRIPLE Running TRIPLE Tote Canvas Tote Running Bag Teeburon Country Teeburon Canvas Bag Teeburon Country !
WRITE Teeburon Canvas Teeburon Country Running Running TRIPLE Teeburon Tote Country TRIPLE Canvas Cross Cross TRIPLE Bag Bag Tote "E20+10000:",Handbag Designer Wallet Wedding Evening Party Girl Purse Bag Purple Gold Clutch Wiwsi Ladies xv8OYw$INCREMENTCountry Cross Teeburon Bag Tote Country TRIPLE Teeburon Bag Teeburon TRIPLE Canvas Cross TRIPLE Canvas Running Tote Running (y,10000)Teeburon Tote Cross Country Canvas Country TRIPLE Canvas Cross Running Tote TRIPLE Bag Teeburon Teeburon TRIPLE Bag Running ,!
WRITE "E20+1 :",$INCREMENT(y),!
Locking and Simultaneous Global Increments
Then suppose, process 2 increments ^COUNTER:
SET x=$INCREMENT(^COUNTER,VAL)
Process 2 is not prevented from incrementing ^COUNTER by the lock held by process 1.
$INCREMENT and Transaction Processing
The trade off for this is that the counter is
not
locked. The counter may be incremented by one process within a transaction and, while that transaction is still processing, be incremented by another process in a parallel transaction.
The following example increments the value of
myvar
by
n
. Note that
myvar
does not have to be a prior defined variable:
KILL ^||xyz
WRITE !,$INCREMENT(^||xyz) ; returns 1
WRITE !,$INCREMENT(^||xyz) ; returns 2
WRITE !,$INCREMENT(^||xyz) ; returns 3
WRITE !,$INCREMENT(^||xyz,3.14) ; returns 6.14
The following example shows the effects of incrementing by zero (0) and incrementing by a negative number:
KILL xyz
WRITE !,$INCREMENT(xyz,0) ; initialized as zero
WRITE !,Canvas Teeburon Running TRIPLE Cross Tote Teeburon TRIPLE Cross Teeburon Running Tote Canvas Bag Country Bag Country TRIPLE $INCREMENT(xyz,0) ; still zero
WRITE !,$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)
KILLTeeburon Country TRIPLE Cross Teeburon Canvas Canvas TRIPLE Country Bag Running Teeburon Tote TRIPLE Tote Bag Running Cross xyz
WRITE !,$INCREMENT(xyz,"")
; null string initializes to 0
WRITE !,$INCREMENT(Tote Cross TRIPLE Tote Canvas Bag Running TRIPLE Country Teeburon Bag Running Teeburon TRIPLE Country Cross Canvas Teeburon xyzCountry Running Bag Canvas Tote Cross Bag Teeburon Cross Teeburon Tote Country TRIPLE Canvas TRIPLE TRIPLE Running Teeburon ,2)
; increments by 2
WRITE !,$INCREMENT(xyz,"")
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTJUZHIJIA handbag By Banquet Red The Hand Held The Grab Hands Bride'S And Is Bag The wI5w6(xyz,"3A4")
Teeburon Teeburon Canvas Cross TRIPLE Bag TRIPLE Tote Teeburon TRIPLE Tote Country Country Cross Running Bag Canvas Running ; increments by 3 (rest of string ignored)
WRITE !,$INCREMENT(xyz,"A4")
; nonnumeric string evaluates as zero (xyz=5)
WRITE !,$INCREMENT(xyz,"1E2")
; increments by 100 (scientific notation)