d .. %{'a' => 3, 'b' => 2, 'c' => 1}
d.setdefault('a', 99) .. 3
d.setdefault('e', 99) .. 99
d .. %{'a' => 3, 'b' => 2, 'c' => 1, 'e' => 99}
d .. %{'a' => 3, 'b' => 2, 'c' => 1, 'e' => 99, 'f' => 100, 'g' => 200, 'h' => 300}
d .. %{'a' => 3, 'b' => 2, 'c' => 1}
d .. %{'a' => 33, 'b' => 22, 'c' => 11}
d .. %{'a' => 33, 'b' => 22, 'c' => 11, 'd' => 444}
d['apple', 'orange', 'grape'] .. [100, 80, 120]
d['Apple', 'Orange', 'Grape'] .. [100, 80, 120]
expected error occurs: KeyError: duplicated key ''Apple''
d['apple', 'orange', 'grape'] .. [100, 80, 120]
expected error occurs: KeyError: dictionary doesn't have a key ''Apple''
d .. %{0 => 0, 1 => 1, 2 => 2, 3 => 3, 4 => 4, 5 => 5, 6 => 6, 7 => 7, 8 => 8, 9 => 9, 10 => 10}
d .. %{0 => 'hello', 1 => 'hello', 2 => 'hello', 3 => 'hello', 4 => 'hello', 5 => 'hello', 6 => 'hello', 7 => 'hello', 8 => 'hello', 9 => 'hello', 10 => 'hello'}
d .. %{hoge => 'aaaaaa', foo => 'bbbbb', bar => 'cccccc'}
d .. %{hoge => 'AAAAAA', foo => 'bbbbb', bar => 'cccccc'}
d .. %{hoge => 'AAAAAA', foo => 'bbbbb', bar => 'cccccc', hoge1 => 'ddddd', hoge2 => 'eeeee'}
d .. %{hoge => 'AAAAAA', foo => 'bbbbb', bar => 'cccccc', hoge1 => 'ddddd', hoge2 => 'eeeee', hoge3 => 'fffff', hoge4 => 'ggggg'}
d .. %{hoge => 'AAAAAA', foo => 'bbbbb', bar => 'cccccc', hoge1 => 'DDDDD', hoge2 => 'EEEEE', hoge3 => 'fffff', hoge4 => 'ggggg'}
d .. %{hoge => 'AAAAAA', foo => 'bbbbb', bar => 'cccccc', hoge1 => 'DDDDD', hoge2 => 'EEEEE', hoge3 => 'FFFFF', hoge4 => 'GGGGG'}
d .. %{hoge => 'AAAAAA', foo => 'bbbbb', bar => 'cccccc', hoge1 => 'DDDDD', hoge2 => 'EEEEE', hoge3 => '*FFFFF*', hoge4 => '*GGGGG*'}
d.get([`hoge, `foo, `aaaa, `bbbb, `cccc, `dddd, `eeee, `ffff, `eee]) .. ['aaaaaa', 'bbbbb', 'AAAAAAA', 'BBBBBBB', 'CCCCCCC', 'DDDDDDD', 'EEEEEEE', 'FFFFFFF', nil]
d.get([`hoge, `foo, `aaaa, `bbbb, `cccc, `dddd, `eeee, `ffff, `eee], [1, 2, 3]) .. ['aaaaaa', 'bbbbb', 'AAAAAAA', 'BBBBBBB', 'CCCCCCC', 'DDDDDDD', 'EEEEEEE', 'FFFFFFF', [1, 2, 3]]
d.gets([`hoge, `foo, `aaaa, `Hoge, `Foo, `Aaaa], [1, 2, 3, 1, 2, 3]) .. ['aaaaaa', 'bbbbb', 'AAAAAAA', 1, 2, 3]
d .. %{1 => [4, 5, 6], 2 => [4, 5, 6], 3 => [4, 5, 6]}
d .. %{1 => 4, 2 => 5, 3 => 6}
items   = [[`hoge, 'aaaaaa'], [`foo, 'bbbbb'], [`aaaa, 'AAAAAAA'], [`bbbb, 'BBBBBBB'], [`cccc, 'CCCCCCC'], [`dddd, 'DDDDDDD'], [`eeee, 'EEEEEEE'], [`ffff, 'FFFFFFF']]
keys    = [`hoge, `foo, `aaaa, `bbbb, `cccc, `dddd, `eeee, `ffff]
values  = ['aaaaaa', 'bbbbb', 'AAAAAAA', 'BBBBBBB', 'CCCCCCC', 'DDDDDDD', 'EEEEEEE', 'FFFFFFF']
d[keys] = ['aaaaaa', 'bbbbb', 'AAAAAAA', 'BBBBBBB', 'CCCCCCC', 'DDDDDDD', 'EEEEEEE', 'FFFFFFF']
expected error occurs: KeyError: duplicated key '`hoge'
for loop
hoge       aaaaaa
foo        bbbbb
aaaa       AAAAAAA
bbbb       BBBBBBB
cccc       CCCCCCC
dddd       DDDDDDD
eeee       EEEEEEE
ffff       FFFFFFF
implicit mapping with keys() and values()
hoge       aaaaaa
foo        bbbbb
aaaa       AAAAAAA
bbbb       BBBBBBB
cccc       CCCCCCC
dddd       DDDDDDD
eeee       EEEEEEE
ffff       FFFFFFF
member mapping with items()
hoge       aaaaaa
foo        bbbbb
aaaa       AAAAAAA
bbbb       BBBBBBB
cccc       CCCCCCC
dddd       DDDDDDD
eeee       EEEEEEE
ffff       FFFFFFF
nestedDict['key-1']['key-1-1'] .. value of 1-1
nestedDict['key-3']['key-3-1'] .. value of 3-1
--------
 value of 1-1 value of 1-2 value of 1-3 value of 1-4 value of 1-5 value of 1-6
 value of 2-1 value of 2-2 value of 2-3 value of 2-4 value of 2-5
 value of 3-1 value of 3-2 value of 3-3 value of 3-4 value of 3-5 value of 3-6 value of 3-7 value of 3-8 value of 3-9
%{key1 => 'value of key1', key2 => 'value of key2', key3 => 'value of key3', key4 => 'value of key4', key5 => 'value of key5', key6 => 'value of key6', key7 => 'value of key7'}
true true true true true true true false false
