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Extract all fields present in a BibEntry object

Source: R/levels.R
levels.BibEntry.Rd

These functions return a list of all fields present in a BibEntry object.

Usage

# S3 method for class 'BibEntry'
levels(x)

fields(x)

Arguments

x

a BibEntry object.

Value

a list with the same length as x of character vectors giving the fields present in each entry of a BibEntry object.

Note

The only difference between fields and levels is that levels returns a list with element names corresponding to entry keys.

Examples

bib <- as.BibEntry(list(c(bibtype = "Article", key = "mclean2014a", title = "My New Article", 
  author = "Mathew W. McLean", 
  journaltitle = "The Journal", date = "2014-01"), c(bibtype = "Book", key = "mclean2014b", 
  title = "My New Book", editor = "Mathew W. McLean", ISBN = "247123837", date = "2014-02")))       
fields(bib)
#> [[1]]
#> [1] "title"        "author"       "journaltitle" "date"        
#> 
#> [[2]]
#> [1] "title"  "editor" "isbn"   "date"  
#> 
levels(bib)
#> $mclean2014a
#> [1] "title"        "author"       "journaltitle" "date"        
#> 
#> $mclean2014b
#> [1] "title"  "editor" "isbn"   "date"  
#>