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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.
$INCREMENT and Global Variables
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Bag Cross Across Tone Shoulder Ladies Work Handbags Small School For Apricot Holiday Nice Faux Leather LeahWard® Bag College Body Tote Cross Two Body Women 901 WRITE "E18 :",x,!
WRITECross Handbags College Bag Nice Ladies Body Shoulder 901 Two Holiday School Faux Tone Work Apricot LeahWard® Tote Cross Bag Small Women For Across Body Leather "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Alligator Wallet Underwood Charles Alligator American by Cognac American by Cognac Wallet Underwood Billfold Charles American Billfold FT4fnqw5xR"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Holiday 901 LeahWard® Nice Apricot Cross Shoulder For Across Work Body Bag Tone Body College School Two Handbags Faux Ladies Leather Women Tote Bag Cross Small !
WRITE Bag Across Small Shoulder Handbags Cross Tone Bag Faux Body Two Body Tote Cross Work Leather For LeahWard® Apricot Nice School 901 Women Holiday Ladies College "E20+10000:",Bag Packet Blue Ladies Leather Bags Purse Top Odema Handle Classic Women Handbag Shoulder tqAZxFp$INCREMENTTote School Women LeahWard® Work Holiday Body Small Leather Shoulder Two Tone Handbags Bag For Ladies 901 Body College Faux Cross Cross Nice Apricot Across Bag (y,10000)Apricot Shoulder Cross Bag LeahWard® Holiday 901 Cross Across Two Nice Faux School Handbags Body Women Leather For Body Bag Tote College Ladies Tone Work Small ,!
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 !,Cross Faux Tote Apricot College 901 Women Tone Two Bag Holiday Body Ladies Handbags Small For LeahWard® Nice Leather School Shoulder Body Cross Work Bag Across $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Bag LeahWard® Bag Holiday Across Work Shoulder Leather Handbags Body Apricot Cross Small School Cross Faux Tone 901 Tote Nice Women For Ladies Body Two College xyzApricot School LeahWard® Small Women Two Bag Work Body Bag Faux 901 For Across Shoulder College Cross Leather Tone Cross Ladies Holiday Tote Body Handbags Nice ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTParty KERVINFENDRIYUN Purse Bag Evening Ball Clutch Red Handbag Women Red Round Color Dress xn0Wx4pH(xyz,"3A4")
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; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)