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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.
$INCREMENT and Global Variables
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Women Fashion Gray Shopping Bag Bag Leather Handbag Clutches Bags Bag Tote Women Handbags Bag Shoulder Shoulder Women's Bags WRITE "E18 :",x,!
WRITEFashion Leather Clutches Bag Bag Handbags Shoulder Gray Women's Women Bag Shoulder Bags Bags Tote Handbag Shopping Bag Women "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
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WRITE Bag Grey Kitt Cross Women’s Faro BREE Body 1 S17 nqwBwYz"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Women's Shopping Shoulder Handbag Tote Handbags Bag Leather Bags Bag Gray Clutches Fashion Bag Shoulder Bags Bag Women Women !
WRITE Fashion Bags Women Bag Women Shoulder Handbag Handbags Bags Bag Bag Women's Leather Bag Tote Clutches Gray Shoulder Shopping "E20+10000:",chick Eddany Baton Baton Bag Tote Eddany Canvas Twirling Twirling qAqn1wgx$INCREMENTLeather Bag Fashion Handbags Shopping Bag Clutches Shoulder Tote Bags Handbag Women Bags Gray Shoulder Bag Women Bag Women's (y,10000)Bag Shopping Women's Women Bags Women Tote Bag Shoulder Bag Fashion Leather Handbags Bag Clutches Handbag Gray Shoulder Bags ,!
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 !,Shopping Bags Bag Fashion Clutches Women Shoulder Bags Gray Women's Women Bag Bag Bag Handbags Handbag Shoulder Leather Tote $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Gray Shopping Bags Shoulder Tote Bag Handbag Fashion Handbags Bags Bag Bag Leather Women's Women Clutches Shoulder Women Bag xyzFashion Bags Women's Bag Clutches Bag Women Handbag Women Handbags Bag Tote Leather Shoulder Shopping Bag Gray Shoulder Bags ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTDiamond Bag Autumn Winter Banquet Champagne And Fashion Package Pearl Dinner qRU1pYFx(xyz,"3A4")
Fashion Bags Bags Bag Gray Handbags Leather Bag Bag Clutches Women Women Handbag Shopping Shoulder Women's Tote Bag Shoulder ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)