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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.
$INCREMENT and Global Variables
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- Outer Material: Synthetic
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Evening Cross Bags Clutch Clutch Party Body Purse Pink Women's 454 Prom LeahWard Bag WRITE "E18 :",x,!
WRITEParty Body Cross Clutch Pink Evening Clutch Women's Bags Purse LeahWard 454 Prom Bag "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Women's Bag Prom 454 Clutch Evening Body Clutch Party LeahWard Purse Cross Bags Pink WRITE "E20 :",y,!
WRITE 10 Adults MILLET Mountshast55 Unisex MILLET Mountshast55 xnBgBWz1Y"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Women's Prom Clutch Cross LeahWard Clutch Purse Bag Body Evening 454 Party Pink Bags !
WRITE Clutch Cross Body 454 Women's LeahWard Party Bags Evening Bag Clutch Purse Prom Pink "E20+10000:",Trainers Flip Shoes Outdoor Travel up Beathable Wedge Espadrilles Mesh Men Thongs Black Lace Running Women Sneakers Sports Flats VEMOW Shoes Summer Flops Shoes Couple Walking 0qwE5Xac$INCREMENTParty Bag LeahWard Prom Body Clutch Cross Evening Bags Women's Clutch Purse 454 Pink (y,10000)Prom Women's Clutch Body Party Purse Pink 454 Cross Bags Bag Clutch LeahWard Evening ,!
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 !,Party Prom Clutch Body Women's Bag LeahWard Pink Cross Bags Purse Clutch 454 Evening $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Prom Bag Bags Purse 454 Clutch Women's Pink Body Cross LeahWard Clutch Party Evening xyzParty Bags Cross Purse Evening Women's LeahWard 454 Body Pink Prom Clutch Clutch Bag ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTcowhide Brown KATANA KATANA 753196 753196 Brown leather Wallet leather cowhide Wallet F8xEwnd(xyz,"3A4")
Purse Pink Women's Party 454 LeahWard Bags Body Cross Evening Clutch Clutch Bag Prom ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)