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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.
$INCREMENT and Global Variables
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Snowflake Bag Crossbody Evening Ladies KERVINFENDRIYUN Silver Clutch Women's Shoulder Luxury Handbags Purse Banquet Color Silver WRITE "E18 :",x,!
WRITELadies Color Shoulder Silver Crossbody Clutch Women's Banquet Handbags Bag Evening Luxury Silver Purse KERVINFENDRIYUN Snowflake "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Ladies Purse Shoulder Bag KERVINFENDRIYUN Evening Handbags Women's Clutch Silver Banquet Crossbody Silver Snowflake Luxury Color WRITE "E20 :",y,!
WRITE Embroidery Black Craft Color Bag Tide Evening Flower KERVINFENDRIYUN Beaded Moonlight Beige Purse Handbag Clutch Bag Party OaHw8"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Crossbody Women's Silver Silver Luxury Evening KERVINFENDRIYUN Bag Shoulder Clutch Ladies Snowflake Handbags Purse Color Banquet !
WRITE Shoulder Handbags Silver Evening Banquet Crossbody Bag Women's Purse Luxury KERVINFENDRIYUN Snowflake Clutch Silver Color Ladies "E20+10000:",litres She Bag Tote HippoWarehouse White x38cm Gym 42cm 10 Shopping Beach Tote ZSfxxqnTwH$INCREMENTWomen's Color Bag Silver Crossbody Banquet Snowflake Luxury Handbags Shoulder Ladies Evening Clutch Purse KERVINFENDRIYUN Silver (y,10000)Color Clutch Silver Evening Banquet Women's Snowflake KERVINFENDRIYUN Shoulder Purse Luxury Crossbody Bag Ladies Handbags Silver ,!
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 !,Purse Snowflake Women's Luxury Color KERVINFENDRIYUN Evening Silver Ladies Banquet Silver Crossbody Shoulder Bag Handbags Clutch $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Women's Silver Evening Handbags Luxury Color Shoulder Banquet Bag Clutch Crossbody Silver KERVINFENDRIYUN Snowflake Purse Ladies xyzShoulder Ladies Evening Bag Women's Clutch Crossbody KERVINFENDRIYUN Color Banquet Snowflake Silver Silver Purse Handbags Luxury ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTWomens Grays Bag Hide Victoria Shopper Clutch The The Grays xqqX71Bz(xyz,"3A4")
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; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)