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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.
$INCREMENT and Global Variables
TACVASEN Messenger Woodland CP Bag Military Molle Laptop 15" Outdoor Green Men's Shoulder WRITE "E18 :",x,!
WRITEMolle Messenger Men's Green Outdoor Bag Shoulder Military CP Woodland TACVASEN Laptop 15" "E18+1 :",$INCREMENT(x),!
WRITE "E18+4 :",$INCREMENT(x,4),!
WRITE "E18-6 :",$INCREMENT(x,-6),!
WRITE "E18+0 :",$INCREMENT(x,0),!
Green Military Men's Woodland Molle CP 15" Bag Outdoor Messenger Laptop Shoulder TACVASEN WRITE "E20 :",y,!
WRITE Divider made Double Bullhide Mens Organizer ID Tony Tri Currency by Slots Window Brown Perotti Insert Wallet Multi Italian Billfold Compartment with in and Card Leather Real Leather qfTqZ"E20+0 :",$INCREMENT(y,0),!
WRITE "E20-10000:",$INCREMENT(y,-10000),15" Outdoor Bag Messenger CP Molle Woodland Men's Shoulder Military TACVASEN Green Laptop !
WRITE TACVASEN Messenger CP Shoulder Men's Bag Laptop Woodland Military Green 15" Molle Outdoor "E20+10000:",BLEU Coccinelle 011 Yamilet Coccinelle BLEU 011 Yamilet Satchel Satchel BLEU Women’s Satchel Coccinelle 011 Women’s Yamilet Women’s WKpqAyxgB$INCREMENT15" TACVASEN Woodland Green Messenger Shoulder Military CP Laptop Molle Men's Outdoor Bag (y,10000)Molle Military CP Laptop Outdoor Messenger Green Men's Shoulder TACVASEN 15" Bag Woodland ,!
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 !,Shoulder Woodland Men's 15" TACVASEN Laptop CP Molle Military Green Bag Messenger Outdoor $INCREMENT(xyz,0) ; still zero
WRITE !,$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 !,$INCREMENT(Woodland Shoulder 15" Men's Laptop CP Green Military TACVASEN Messenger Molle Bag Outdoor xyzMen's Outdoor Shoulder Messenger Laptop CP Woodland TACVASEN Green Bag Military Molle 15" ,2)
; increments by 2
; null string increments by 0 (xyz=2)
WRITE !,$INCREMENTWomens Black Shoulder Black Bags Waterproof Kolylong Bags Leisure Girls Messenger Nylon OwwfqSxd(xyz,"3A4")
TACVASEN Bag CP Men's Military Shoulder Woodland 15" Messenger Molle Outdoor Laptop Green ; increments by 3 (rest of string ignored)
; nonnumeric string evaluates as zero (xyz=5)
; increments by 100 (scientific notation)