--- %YAML:1.0 
test: Empty Sequence 
brief: > 
    You can represent the empty sequence 
    with an empty inline sequence. 
yaml: | 
    empty: [] 
python: | 
    [ 
        { 'empty': [] } 
    ] 
ruby: | 
    { 'empty' => [] } 
syck: |
    struct test_node seq[] = {
        end_node
    };
    struct test_node map[] = {
        { T_STR, 0, "empty" },
            { T_SEQ, 0, 0, seq },
        end_node
    };
    struct test_node stream[] = {
        { T_MAP, 0, 0, map },
        end_node
    };
 
--- 
test: Empty Mapping 
brief: > 
    You can represent the empty mapping 
    with an empty inline mapping. 
yaml: | 
    empty: {} 
python: | 
    [ 
        { 'empty': {} } 
    ] 
ruby: | 
    { 'empty' => {} } 
syck: |
    struct test_node map2[] = {
        end_node
    };
    struct test_node map1[] = {
        { T_STR, 0, "empty" },
            { T_MAP, 0, 0, map2 },
        end_node
    };
    struct test_node stream[] = {
        { T_MAP, 0, 0, map1 },
        end_node
    };
 
--- 
test: Empty Sequence as Entire Document 
yaml: | 
    --- [] 
python: | 
    [ [] ] 
ruby: | 
    [] 
syck: |
    struct test_node seq[] = {
        end_node
    };
    struct test_node stream[] = {
        { T_SEQ, 0, 0, seq },
        end_node
    };
 
--- 
test: Empty Mapping as Entire Document 
yaml: | 
    --- {} 
python: | 
    [ {} ] 
ruby: | 
    {} 
syck: |
    struct test_node map[] = {
        end_node
    };
    struct test_node stream[] = {
        { T_MAP, 0, 0, map },
        end_node
    };
 
---  
test: Null as Document 
yaml: | 
    --- ~ 
python: | 
    [ None ] 
ruby: | 
    nil 
syck: |
    struct test_node stream[] = {
        { T_STR, 0, "~" },
        end_node
    };
 
--- 
test: Empty String 
brief: > 
    You can represent an empty string 
    with a pair of quotes. 
yaml: | 
    --- '' 
python: | 
    [ '' ] 
ruby: | 
    '' 
syck: |
    struct test_node stream[] = {
        { T_STR, 0, "" },
        end_node
    };