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func main()
t := {"one": 1, "two": 2}
assert t == {"one": 1, "two": 2}
assert t["one"] == 1
assert t["two"] == 2
assert t["???"] == none
assert t["one"]! == 1
assert t["???"] or -1 == -1
t_str := ""
for k,v in t
t_str ++= "($k=$v)"
assert t_str == "(one=1)(two=2)"
assert t.length == 2
assert t.fallback == none
assert t.keys == ["one", "two"]
assert t.values == [1, 2]
t2 := {"three": 3; fallback=t}
assert t2 == {"three": 3; fallback={"one": 1, "two": 2}}
assert t2["one"] == 1
assert t2["three"] == 3
assert t2["???"] == none
assert t2.length == 1
assert t2.fallback == {"one": 1, "two": 2}
t2_str := ""
for k,v in t2
t2_str ++= "($k=$v)"
assert t2_str == "(three=3)"
assert {i: 10*i for i in 5} == {1: 10, 2: 20, 3: 30, 4: 40, 5: 50}
assert {i: 10*i for i in 5 if i mod 2 != 0} == {1: 10, 3: 30, 5: 50}
assert {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)
assert t3[] == {1: 10, 2: 20}
do
>> plain := {1: 10, 2: 20, 3: 30}
assert plain[2]! == 20
assert plain[2]! == 20
assert plain[456] or -999 == -999
assert plain.has(2) == yes
assert plain.has(456) == no
>> fallback := {4: 40; fallback=plain}
assert fallback.has(1) == yes
assert fallback[1] or -999 == 10
do
>> t4 := &{"one": 1}
>> t4["one"] = 999
>> t4["two"] = 222
assert t4[] == {"one": 999, "two": 222}
do
assert {1: 1, 2: 2} == {2: 2, 1: 1}
assert {1: 1, 2: 2} != {1: 1, 2: 999}
assert ({1: 1, 2: 2} <> {2: 2, 1: 1}) == Int32(0)
ints : [{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}]
assert ints.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}]
do
# Default values:
counter := &{"x": 10; default=0}
assert counter["x"] == 10
assert counter["y"] == 0
assert counter.has("x") == yes
assert counter.has("y") == no
>> counter["y"] += 1
do
# Set operations
a := {"A":1, "B":2, "C":3}
b := {"B":2, "C":30, "D":40}
assert a.with(b) == {"A":1, "B":2, "C":30, "D":40}
assert a.with(b) == a ++ b
assert a.intersection(b) == {"B":2}
assert a.difference(b) == {"A":1, "D":40}
assert a.without(b) == {"A":1, "C":3}
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