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func main():
>> t := {"one":1, "two":2}
= {"one":1, "two":2}
>> t["one"]
= 1 : Int?
>> t["two"]
= 2 : Int?
>> t["???"]
= none : Int?
>> t["one"]!
= 1
>> t["???"] or -1
= -1
t_str := ""
for k,v in t:
t_str ++= "($k:$v)"
>> t_str
= "(one:1)(two:2)"
>> t.length
= 2
>> t.fallback
= none : {Text:Int}?
>> t.keys
= ["one", "two"]
>> t.values
= [1, 2]
>> t2 := {"three":3; fallback=t}
= {"three":3; fallback={"one":1, "two":2}}
>> t2["one"]
= 1 : Int?
>> t2["three"]
= 3 : Int?
>> t2["???"]
= none : Int?
>> t2.length
= 1
>> t2.fallback
= {"one":1, "two":2} : {Text:Int}?
t2_str := ""
for k,v in t2:
t2_str ++= "($k:$v)"
>> t2_str
= "(three:3)"
>> {i:10*i for i in 5}
= {1:10, 2:20, 3:30, 4:40, 5:50}
>> {i:10*i for i in 5 if i mod 2 != 0}
= {1:10, 3:30, 5:50}
>> {x:10*x for x in y if x > 1 for y in [3, 4, 5] if y < 5}
= {2:20, 3:30, 4:40}
>> t3 := @{1:10, 2:20, 3:30}
>> t3:remove(3)
>> t3
= @{1:10, 2:20}
do:
>> plain := {1:10, 2:20, 3:30}
>> plain[2]!
= 20
>> plain[2]!
= 20
>> plain[456] or -999
= -999
>> plain:has(2)
= yes
>> plain:has(456)
= no
>> fallback := {4:40; fallback=plain}
>> fallback:has(1)
= yes
>> fallback[1] or -999
= 10
do:
>> t4 := &{"one": 1}
>> t4["one"] = 999
>> t4["two"] = 222
>> t4
= &{"one":999, "two":222}
do:
>> {1:1, 2:2} == {2:2, 1:1}
= yes
>> {1:1, 2:2} == {1:1, 2:999}
= no
>> {1:1, 2:2} <> {2:2, 1:1}
= 0
>> [{:Int:Int}, {0:0}, {99:99}, {1:1, 2:2, 3:3}, {1:1, 99:99, 3:3}, {1:1, 2:-99, 3:3}, {1:1, 99:-99, 3:4}]:sorted()
= [{}, {0:0}, {1:1, 2:-99, 3:3}, {1:1, 2:2, 3:3}, {1:1, 99:99, 3:3}, {1:1, 99:-99, 3:4}, {99:99}]
>> [{:Int}, {1}, {2}, {99}, {0, 3}, {1, 2}, {99}]:sorted()
= [{}, {0, 3}, {1}, {1, 2}, {2}, {99}, {99}]
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