Description Usage Arguments YAML syntax Author(s) References See Also Examples
Identifies lines that correspond to YAML markup in comments.
1 | getYamlFromComments(from, ctx = NULL, where = parent.frame(), ...)
|
from |
Signature argument. Object containing YAML markup. |
ctx |
Signature argument. Markup proecessing context. |
where |
|
... |
Further arguments to be passed to subsequent functions/methods. |
Note that the YAML statement for specifying object references must be as follows:
object-ref: {id: {id}, where: {where}, as: {id-ref}}
Note that elements where
and as
are optional and that spaces
are required between each syntax component. While the lack of spaces will
cause a parsing error in yaml.load
, additional spaces
do not casue any trouble.
Example for valid YAML statements
object-ref: {id: x_1, where: .GlobalEnv, as: ref_1}
object-ref: {id: x_1, where: .GlobalEnv}
object-ref: {id: x_1}
object-ref: { id: x_1, where : .GlobalEnv, as: ref_1 }
See the official http://www.yaml.org/ for more details about YAML
Janko Thyson janko.thyson@rappster.de
http://github.com/Rappster/yamlr
getYamlFromComments-function-YamlContext.ObjectReference.S3-method,
getYaml
1 2 3 4 5 6 7 8 9 10 11 12 13 | ## Not run:
yaml <- getYamlFromComments(
from = function() {
## object-ref: {id: x_1, where:.GlobalEnv, as: ref_1}
},
ctx = YamlContext.ObjectReference.S3()
)
yaml$original
yaml$src
## End(Not run)
|
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