Expand c-squares with wildcards to all matching c-squares

The asterisk (*) can be used as a wildcard, for a compact notation of csquares. expand_wildcards will replace all wild cards with valid combinations of values and expands the compact notation to an explicit notation without wildcards. Check out vignette("wildcards") for more details.

expand_wildcards(x, csquares, ...)

Arguments

x: A character string containing csquares codes with wildcards (asterisk character); or a data.frame that contains a column with csquares codes with wildcards
csquares: When x is data.frame this argument should specify the column name that contains the csquares codes with wildcards.
...: ignored

Value

Returns a csquares object with full notation

Author

Pepijn de Vries

Examples

expand_wildcards("1000:*")
#>  csquares [1:1]   4 squares
expand_wildcards("1000:***")
#>  csquares [1:1] 100 squares
expand_wildcards("1000:1**")
#>  csquares [1:1]  25 squares
expand_wildcards("1000:***:*")
#>  csquares [1:1] 400 squares
expand_wildcards(c("1000:*", "1000:***", "1000:1**", "1000:***:*"))
#>  csquares [1:4]   4 squares, 100 squares,  25 squares, 400 squares

expand_wildcards(data.frame(csq = "1000:*", foo = "bar"), csquares = "csq")
#>           csq foo
#> 1   4 squares bar