module English
Include the English
library file in a Ruby script, and you can reference the global variables such as $_
using less cryptic names, listed below.
Without ‘English’:
$\ = ' -- ' "waterbuffalo" =~ /buff/ print $', $$, "\n"
With English:
require "English" $OUTPUT_FIELD_SEPARATOR = ' -- ' "waterbuffalo" =~ /buff/ print $POSTMATCH, $PID, "\n"
Below is a full list of descriptive aliases and their associated global variable:
- $ERROR_INFO
-
$!
- $ERROR_POSITION
-
$@
- $FS
-
$;
- $FIELD_SEPARATOR
-
$;
- $OFS
-
$,
- $OUTPUT_FIELD_SEPARATOR
-
$,
- $RS
-
$/
- $INPUT_RECORD_SEPARATOR
-
$/
- $ORS
-
$\
- $OUTPUT_RECORD_SEPARATOR
-
$\
- $INPUT_LINE_NUMBER
-
$.
- $NR
-
$.
- $LAST_READ_LINE
-
$_
- $DEFAULT_OUTPUT
-
$>
- $DEFAULT_INPUT
-
$<
- $PID
-
$$
- $PROCESS_ID
-
$$
- $CHILD_STATUS
-
$?
- $LAST_MATCH_INFO
-
$~
- $ARGV
-
$*
- $MATCH
-
$&
- $PREMATCH
-
$‘
- $POSTMATCH
-
$‘
- $LAST_PAREN_MATCH
-
$+