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Null / Missing Value Level

Source: R/cl_levels.R
cl_null.Rd

Creates a level that fires when either or both record values are NULL or NA. Typically used as the first level inside cl_levels().

Usage

cl_null()

Value

A comparison-level object.

Examples

cl_levels(cl_null(), cl_exact(), cl_else())
#> $method
#> [1] "levels"
#> 
#> $levels
#> $levels[[1]]
#> $method
#> [1] "null"
#> 
#> $is_null_level
#> [1] TRUE
#> 
#> $is_else_level
#> [1] FALSE
#> 
#> attr(,"class")
#> [1] "il_comparison_level"
#> 
#> $levels[[2]]
#> $method
#> [1] "exact"
#> 
#> $term_frequency
#> [1] FALSE
#> 
#> $is_null_level
#> [1] FALSE
#> 
#> $is_else_level
#> [1] FALSE
#> 
#> attr(,"class")
#> [1] "il_comparison_level"
#> 
#> $levels[[3]]
#> $method
#> [1] "else"
#> 
#> $is_null_level
#> [1] FALSE
#> 
#> $is_else_level
#> [1] TRUE
#> 
#> attr(,"class")
#> [1] "il_comparison_level"
#> 
#> 
#> $term_frequency
#> [1] FALSE
#> 
#> $is_null_level
#> [1] FALSE
#> 
#> $is_else_level
#> [1] FALSE
#> 
#> attr(,"class")
#> [1] "il_comparison_level"