Detect character structure Detect if values within a character variable match at least one of defined patterns

Detect character structure Detect if values within a character variable match at least one of defined patterns

Usage

detect_chars_structure(vector, patterns, verbose = FALSE)

Arguments

vector

Character. Input vector to detect pattern from

patterns

Character. Patterns to detect within vector. Regex is supported

verbose

Logical 1L. If TRUE, additional details related to the pattern detection are provided

Value

Logical 1L. If verbose is set to TRUE, the function returns a list with the following elements in order:

• "Any defined structure" : Logical 1L. TRUE if the pattern is detected anywhere from the input vector

• "Which" : Character. Unique values of input vector matching the defined patterns

• "Where" : Integer. Indexes of values from input vector matching the defined patterns

Examples

detect_chars_structure(
  vector = c("ABCD1234", "4567EF", "89GHIJ10"), 
  patterns = "[:alpha:]{4}" # detect four consecutive alphabetic values
)
#> [1] TRUE

detect_chars_structure(
  vector = c("ABCD1234", "4567EF", "89GHIJ10"), 
  patterns = "[:alpha:]{4}", 
  verbose = TRUE
)
#> $`Any defined structure`
#> [1] TRUE
#> 
#> $Which
#> [1] "ABCD1234" "89GHIJ10"
#> 
#> $Where
#> [1] 1 3
#>