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| Related Syntax | Related Concepts | ||||||||
| action | new | ||||||||
Syntax
new shelf-name ({string-expression})? insertion-point?
set new shelf-name ({ string-expression})? insertion-point?
to expression
where
new inserts a new item onto a shelf and can only be invoked on shelves that have been declared variable:
local integer x variable initial-size 0 new x
By default, the new item is inserted after the last item on the shelf. You can insert the new item before or after another item:
new x{"wilma"} after [2]
To make the new item the first item on the shelf, you can use before [1] or after [0].
A new item can be given a key as it is inserted:
new x{"fred"} before {"barney"}
new x{"wilma"} after [2]
The set new action combines the new and set actions into one action so that
new x{"fred"} before [1]
set x{"fred"} to "flintstone0"
can be replaced with:
set new x{"fred"} before [1] to "flintstone0"
Putting these code fragments together gives us the following program:
process
local stream x variable initial-size 0
new x
set key of x to "barney"
set x to "flintstone1"
set new x{"fred"} before [1] to "flintstone0"
set x{"fred"} to "flintstone0"
new x{"wilma"} after [2]
set x{"wilma"} to "flintstone2"
repeat over x
output x || " has key " || key of x || "%n"
again
; Output: "flintstone0 has key fred
; flintstone1 has key barney
; flintstone2 has key wilma"
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Related Syntax set |
Related Concepts Shelves Variables |
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