R: Validate input vectors

check_integer {quanteda} | R Documentation

## Validate input vectors

### Description

Check the range of values and the length of input vectors before used in control flow or passed to C++ functions.

### Usage

    check_integer(
      x,
      min_len = 1,
      max_len = 1,
      min = -Inf,
      max = Inf,
      strict = FALSE
    )

    check_double(
      x,
      min_len = 1,
      max_len = 1,
      min = -Inf,
      max = Inf,
      strict = FALSE
    )

    check_logical(x, min_len = 1, max_len = 1, strict = FALSE)

    check_character(
      x,
      min_len = 1,
      max_len = 1,
      min_nchar = 0,
      max_nchar = Inf,
      strict = FALSE
    )

### Arguments

`min_len` | minimum length of the vector
`max_len` | maximum length of the vector
`min` | minimum value in the vector
`max` | maximum value in the vector
`strict` | raise error when `x` is a different type
`min_nchar` | minimum character length of values in the vector
`max_nchar` | maximum character length of values in the vector

### Details

Note that value checks are performed after coercion to expected input types.

### Examples

    ## Not run:
    check_integer(0, min = 1) # error
    check_integer(-0.1, min = 0) # return 0
    check_double(-0.1, min = 0) # error
    check_double(numeric(), min_len = 0) # return numeric()
    check_double("1.1", min = 1) # returns 1.1
    check_double("1.1", min = 1, strict = TRUE) # error
    check_double("xyz", min = 1) # error
    check_logical(c(TRUE, FALSE), min_len = 3) # error
    check_character("_", min_nchar = 1) # return "_"
    check_character("", min_nchar = 1) # error

    ## End(Not run)

[Package quanteda version 3.1.0 Index]