scan_dbl: Read values encoded as characters strings

In ctypesio: Read and Write Standard 'C' Types from Files, Connections and Raw Vectors

Read values encoded as characters strings

Description

A lightweight wrapper around the standard scan() function.

Usage

scan_dbl(con, n = 1, quiet = TRUE, ...)

scan_int(con, n = 1, quiet = TRUE, ...)

scan_str(con, n = 1, quiet = TRUE, ...)

Arguments

con	Connection object or raw vector. Connection objects can be created with file(), url(), rawConnection() or any of the other many connection creation functions.
n	Number of elements to read. Default: 1
quiet	Default: TRUE
...	further arguments passed to scan()

Details

These functions are useful when the numeric values are encoded as strings written to the file, rather than as binary data. Values must be delimited by whitespace or other specified separator. See documentation for scan() for more information.

Value

Value of the given type

See Also

Other data input functions: read_f64(), read_hex(), read_raw(), read_str(), read_uint8()

Examples

con <- textConnection(r"(
  type
  20 30
  3.14159
)")

scan_str(con)
scan_int(con)
scan_int(con)
scan_dbl(con)
close(con)

ctypesio documentation built on April 3, 2025, 7:28 p.m.