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# example program: maintain multiple counters with isolated lexical scopes
# (spaces)
def new-counter n:num -> default-space:space [
default-space <- new location:type, 30
load-inputs # initialize n
]
def increment-counter outer:space/names:new-counter, x:num -> n:num/space:1 [
local-scope
load-inputs
0:space/names:new-counter <- copy outer # setup outer space; it *must* come from 'new-counter'
n/space:1 <- add n/space:1, x
]
def main [
local-scope
# counter A
a:space/names:new-counter <- new-counter 34
# counter B
b:space/names:new-counter <- new-counter 23
# increment both by 2 but in different ways
increment-counter a, 1
b-value:num <- increment-counter b, 2
a-value:num <- increment-counter a, 1
# check results
$print [Contents of counters], 10/newline
$print [a: ], a-value, [ b: ], b-value, 10/newline
]
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