dot-safe_extract_first: Safely extract the first non-empty field from a list of lists
In valdr: Access and Analyse 'VALD' Data via Our External 'APIs'
.safe_extract_first R Documentation
Safely extract the first non-empty field from a list of lists
Description
Internal helper function used to extract the first non-empty value
from a list of fields, in order, from a list of records.
If all fields are NULL or empty strings, returns "".
Usage
.safe_extract_first(x, fields)
Arguments
x
A list of lists (records), coming from parsed JSON API responses.
fields
A character vector naming the candidate fields to check in order.
Value
A character vector containing the extracted values, with NULLs replaced by "".
Internal function (not designed to be used directly by end users)
valdr documentation built on April 22, 2026, 9:08 a.m.
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| .safe_extract_first | R Documentation |
Safely extract the first non-empty field from a list of lists
Description
Internal helper function used to extract the first non-empty value
from a list of fields, in order, from a list of records.
If all fields are NULL or empty strings, returns "".
Usage
.safe_extract_first(x, fields)
Arguments
x |
A list of lists (records), coming from parsed JSON API responses. |
fields |
A character vector naming the candidate fields to check in order. |
Value
A character vector containing the extracted values, with NULLs replaced by "".
Internal function (not designed to be used directly by end users)
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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