The yaml vocabulary implements YAML serialization/deserialization. It uses LibYAML, a YAML parser and emitter written in C (https://pyyaml.org/wiki/LibYAML).
Main conversion words
Next topics:
Mapping between Factor and YAML types
Special mapping keys
YAML errors
YAML control variables
Examples
Input
Output -- human readable
Output -- verbose
Main conversion words
>yaml ( obj -- str )
>yaml-docs ( seq -- str )
yaml> ( str -- obj )
yaml-docs> ( str -- arr )
Next topics:
Mapping between Factor and YAML types Special mapping keys YAML errors YAML control variablesExamples
Input
USING: prettyprint yaml ;
"- true
- null
- ! 42
- \"42\"
- 42
- 0x2A
- 0o52
- 42.0
- 4.2e1" yaml> .
{ t f "42" "42" 42 42 42 42.0 42.0 }
{ t f "42" "42" 42 42 42 42.0 42.0 }
Output -- human readable
USING: yaml yaml.config ;
t implicit-tags set
t implicit-start set
t implicit-end set
+libyaml-default+ emitter-canonical set
+libyaml-default+ emitter-indent set
+libyaml-default+ emitter-width set
+libyaml-default+ emitter-line-break set
t emitter-unicode set
{
H{
{ "name" "Mark McGwire" }
{ "hr" 65 }
{ "avg" 0.278 }
}
H{
{ "name" "Sammy Sosa" }
{ "hr" 63 }
{ "avg" 0.288 }
}
} >yaml print
- name: Mark McGwire hr: 65 avg: 0.278 - name: Sammy Sosa hr: 63 avg: 0.288
- name: Mark McGwire hr: 65 avg: 0.278 - name: Sammy Sosa hr: 63 avg: 0.288
Output -- verbose
USING: yaml yaml.config ;
f implicit-tags set
f implicit-start set
f implicit-end set
+libyaml-default+ emitter-canonical set
+libyaml-default+ emitter-indent set
+libyaml-default+ emitter-width set
+libyaml-default+ emitter-line-break set
t emitter-unicode set
{ t 32 "foobar" { "nested" "list" } H{ { "nested" "assoc" } } } >yaml print
--- !!seq - !!bool true - !!int 32 - !!str foobar - !!seq - !!str nested - !!str list - !!map !!str nested: !!str assoc ...
--- !!seq - !!bool true - !!int 32 - !!str foobar - !!seq - !!str nested - !!str list - !!map !!str nested: !!str assoc ...