forge (version 0.2.0)

cast: Cast values into shape

Description

These functions verify and attempt to coerce values into the specified types and shapes. If they are unsuccessful in the coercion, an error is thrown.

Usage

cast_integer(x, n = NULL, allow_na = FALSE, allow_null = FALSE,
  id = NULL, return_id = FALSE)
cast_scalar_integer(x, allow_na = FALSE, allow_null = FALSE,
  id = NULL, return_id = FALSE)
cast_nullable_integer(x, n = NULL, allow_na = FALSE, id = NULL,
  return_id = FALSE)
cast_nullable_scalar_integer(x, allow_na = FALSE, id = NULL,
  return_id = FALSE)
cast_integer_list(x, n = NULL, allow_na = FALSE, allow_null = FALSE,
  id = NULL, return_id = FALSE)
cast_nullable_integer_list(x, n = NULL, allow_na = FALSE, id = NULL,
  return_id = FALSE)
cast_double(x, n = NULL, allow_na = FALSE, allow_null = FALSE,
  id = NULL, return_id = FALSE)
cast_scalar_double(x, allow_na = FALSE, allow_null = FALSE,
  id = NULL, return_id = FALSE)
cast_nullable_double(x, n = NULL, allow_na = FALSE, id = NULL,
  return_id = FALSE)
cast_nullable_scalar_double(x, allow_na = FALSE, id = NULL,
  return_id = FALSE)
cast_double_list(x, n = NULL, allow_na = FALSE, allow_null = FALSE,
  id = NULL, return_id = FALSE)
cast_nullable_double_list(x, n = NULL, allow_na = FALSE, id = NULL,
  return_id = FALSE)
cast_character(x, n = NULL, allow_na = FALSE, allow_null = FALSE,
  id = NULL, return_id = FALSE)
cast_scalar_character(x, allow_na = FALSE, allow_null = FALSE,
  id = NULL, return_id = FALSE)
cast_nullable_character(x, n = NULL, allow_na = FALSE, id = NULL,
  return_id = FALSE)
cast_nullable_scalar_character(x, allow_na = FALSE, id = NULL,
  return_id = FALSE)
cast_character_list(x, n = NULL, allow_na = FALSE,
  allow_null = FALSE, id = NULL, return_id = FALSE)
cast_nullable_character_list(x, n = NULL, allow_na = FALSE,
  id = NULL, return_id = FALSE)
cast_string(x, allow_na = FALSE, allow_null = FALSE, id = NULL,
  return_id = FALSE)
cast_nullable_string(x, allow_na = FALSE, id = NULL,
  return_id = FALSE)
cast_string_list(x, n = NULL, allow_na = FALSE, allow_null = FALSE,
  id = NULL, return_id = FALSE)
cast_nullable_string_list(x, n = NULL, allow_na = FALSE, id = NULL,
  return_id = FALSE)
cast_logical(x, n = NULL, allow_na = FALSE, allow_null = FALSE,
  id = NULL, return_id = FALSE)
cast_scalar_logical(x, allow_na = FALSE, allow_null = FALSE,
  id = NULL, return_id = FALSE)
cast_nullable_logical(x, n = NULL, allow_na = FALSE, id = NULL,
  return_id = FALSE)
cast_nullable_scalar_logical(x, allow_na = FALSE, id = NULL,
  return_id = FALSE)
cast_logical_list(x, n = NULL, allow_na = FALSE, allow_null = FALSE,
  id = NULL, return_id = FALSE)
cast_nullable_logical_list(x, n = NULL, allow_na = FALSE, id = NULL,
  return_id = FALSE)
cast_choice(x, choices, allow_na = FALSE, allow_null = FALSE,
  id = NULL, return_id = FALSE)

Arguments

x

A vector.

n

The required length of the vector. If NULL, the length is not checked.

allow_na

Whether to allow NAs in the vector.

allow_null

Whether to allow NULL.

id

Name given to the input to aid the user in identifying the bad value.

return_id

Whether to return the ID as an attribute. This should only be set to TRUE when piping the result to another forge function. Defaults to FALSE.

choices

A character, numeric, or integer vector of allowed values.

Examples

# NOT RUN {
# Cast a double vector to integer
cast_integer(c(1, 2))

# Cast a numeric to a string
cast_string(4.5)

# Cast an integer vector to a list of doubles
cast_double_list(1:4)

# }