isBinaryString
Test if a value is a binary string.
Usage
var isBinaryString = require( '@stdlib/assert/is-binary-string' );
isBinaryString( value )
Tests if a value is a binary string; i.e., a character sequence of 1's and 0's.
var bool = isBinaryString( '1000101' ); // returns true bool = isBinaryString( 'beep' ); // returns false bool = isBinaryString( '' ); // returns false
Examples
var isBinaryString = require( '@stdlib/assert/is-binary-string' ); var bool = isBinaryString( '1' ); // returns true bool = isBinaryString( '0' ); // returns true bool = isBinaryString( '101010101001' ); // returns true bool = isBinaryString( '' ); // returns false bool = isBinaryString( 'beep' ); // returns false bool = isBinaryString( null ); // returns false
CLI
Usage
Usage: is-binary-string [options] [<string>]
Options:
-h, --help Print this message.
-V, --version Print the package version.
--split sep Delimiter for stdin data. Default: '/\\r?\\n/'.
Notes
-
If the split separator is a regular expression, ensure that the
splitoption is either properly escaped or enclosed in quotes.# Not escaped... $ echo -n $'beEp booP\n100001110' | is-binary-string --split /\r?\n/ # Escaped... $ echo -n $'beEp booP\n100001110' | is-binary-string --split /\\r?\\n/
-
The implementation ignores trailing delimiters.
Examples
$ is-binary-string 01234
falseTo use as a standard stream,
$ echo -n '0110' | is-binary-string true
By default, when used as a standard stream, the implementation assumes newline-delimited data. To specify an alternative delimiter, set the split option.
$ echo -n '0110\t1234' | is-binary-string --split '\t' true false
See Also
@stdlib/assert/is-string: test if a value is a string.