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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.
$INCREMENT and Global Variables
Men's Military Green Outdoor CP Shoulder Bag TACVASEN 15" Woodland Messenger Laptop Molle WRITE "E18 :",x,!
WRITEShoulder Men's Woodland CP Molle TACVASEN Military Messenger 15" Green Bag Laptop Outdoor "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Men's Woodland Laptop Messenger Military Bag Shoulder Outdoor TACVASEN Green 15" CP Molle WRITE "E20 :",y,!
WRITE Design Flap 1 Long Clutch New Womens Ladies Luxury Envelope Diamante Bags Black Shoulder Purse Large Handbag 6wCgnOqWfx"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),Messenger Molle Military Outdoor Green 15" Shoulder Laptop Men's Bag CP Woodland TACVASEN !
WRITE Molle CP Green TACVASEN Laptop Men's Messenger Military 15" Woodland Shoulder Bag Outdoor "E20+10000:",Holder Credit Card Wallet 'Abstract CH00001516 Business Card Azeeda Flowers' AqFWI$INCREMENTMen's Military TACVASEN Woodland 15" Laptop Bag Green Shoulder Outdoor CP Molle Messenger (y,10000)Molle Shoulder Laptop Woodland 15" Men's CP Military Bag Outdoor Messenger TACVASEN Green ,!
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 !,Outdoor TACVASEN Men's Bag Laptop Woodland Messenger 15" Molle Military CP Green Shoulder $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Military 15" Molle Messenger CP TACVASEN Bag Outdoor Green Woodland Laptop Men's Shoulder xyzMessenger Bag Molle CP Woodland 15" Green Men's Shoulder Military TACVASEN Laptop Outdoor ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTCH00005719 Card Card Holder Wallet Azeeda Phone' Business 'Mobile Credit qvxB8Y1(xyz,"3A4")
Green Military Bag Molle Woodland CP Laptop Shoulder 15" Messenger Men's TACVASEN Outdoor ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)