| Path: | lib/English.rb |
| Last Update: | Sun Apr 04 06:34:24 CDT 2004 |
Include the English library file in a Ruby script, and you can reference the global variables such as \VAR{\$_} using less cryptic names, listed in the following table.% \vref{tab:english}.
Without ‘English’:
$\ = ' -- '
"waterbuffalo" =~ /buff/
print $", $', $$, "\n"
With English:
require "English"
$OUTPUT_FIELD_SEPARATOR = ' -- '
"waterbuffalo" =~ /buff/
print $LOADED_FEATURES, $POSTMATCH, $PID, "\n"
| $! | -> | $ERROR_INFO |
| The exception object passed to raise. | ||
| $@ | -> | $ERROR_POSITION |
| The stack backtrace generated by the last exception. See Kernel.caller for details. Thread local. | ||
| $; | -> | $FS |
| The default separator pattern used by String.split. May be set from the command line using the -F flag. | ||
| $; | -> | $FIELD_SEPARATOR |
| The default separator pattern used by String.split. May be set from the command line using the -F flag. | ||
| $, | -> | $OFS |
| The separator string output between the parameters to methods such as Kernel.print and Array.join. Defaults to nil, which adds no text. | ||
| $, | -> | $OUTPUT_FIELD_SEPARATOR |
| The separator string output between the parameters to methods such as Kernel.print and Array.join. Defaults to nil, which adds no text. | ||
| $/ | -> | $RS |
| The input record separator (newline by default). This is the value that routines such as Kernel.gets use to determine record boundaries. If set to nil, gets will read the entire file. | ||
| $/ | -> | $INPUT_RECORD_SEPARATOR |
| The input record separator (newline by default). This is the value that routines such as Kernel.gets use to determine record boundaries. If set to nil, gets will read the entire file. | ||
| $\ | -> | $ORS |
| The string appended to the output of every call to methods such as Kernel.print and IO.write. The default value is nil. | ||
| $\ | -> | $OUTPUT_RECORD_SEPARATOR |
| The string appended to the output of every call to methods such as Kernel.print and IO.write. The default value is nil. | ||
| $. | -> | $INPUT_LINE_NUMBER |
| The number of the last line read from the current input file. | ||
| $. | -> | $NR |
| The number of the last line read from the current input file. | ||
| $_ | -> | $LAST_READ_LINE |
| The last line read by Kernel.gets or Kernel.readline. Many string-related functions in the Kernel module operate on $_ by default. The variable is local to the current scope. Thread local. | ||
| $> | -> | $DEFAULT_OUTPUT |
| The destination of output for Kernel.print and Kernel.printf. The default value is $stdout. | ||
| $< | -> | $DEFAULT_INPUT |
| An object that provides access to the concatenation of the contents of all the files given as command-line arguments, or $stdin (in the case where there are no arguments). $< supports methods similar to a File object: inmode, close, closed?, each, each_byte, each_line, eof, eof?, file, filename, fileno, getc, gets, lineno, lineno=, path, pos, pos=, read, readchar, readline, readlines, rewind, seek, skip, tell, to_a, to_i, to_io, to_s, along with the methods in Enumerable. The method file returns a File object for the file currently being read. This may change as $< reads through the files on the command line. Read only. | ||
| $$ | -> | $PID |
| The process number of the program being executed. Read only. | ||
| $$ | -> | $PROCESS_ID |
| The process number of the program being executed. Read only. | ||
| $? | -> | $CHILD_STATUS |
| The exit status of the last child process to terminate. Read only. Thread local. | ||
| $~ | -> | $LAST_MATCH_INFO |
| A MatchData object that encapsulates the results of a successful pattern match. The variables $&, $`, $’, and $1 to $9 are all derived from $~. Assigning to $~ changes the values of these derived variables. This variable is local to the current scope. Thread local. | ||
| $= | -> | $IGNORECASE |
| If set to any value apart from nil or false, all pattern matches will be case insensitive, string comparisons will ignore case, and string hash values will be case insensitive. Deprecated | ||
| $* | -> | $ARGV |
| An array of strings containing the command-line options from the invocation of the program. Options used by the Ruby interpreter will have been removed. Read only. Also known simply as ARGV. | ||
| $& | -> | $MATCH |
| The string matched by the last successful pattern match. This variable is local to the current scope. Read only. Thread local. | ||
| $` | -> | $PREMATCH |
| The string preceding the match in the last successful pattern match. This variable is local to the current scope. Read only. Thread local. | ||
| $' | -> | $POSTMATCH |
| The string following the match in the last successful pattern match. This variable is local to the current scope. Read only. Thread local. | ||
| $+ | -> | $LAST_PAREN_MATCH |
| The contents of the highest-numbered group matched in the last successful pattern match. Thus, in "cat" =~ /(c|a)(t|z)/, $+ will be set to "t". This variable is local to the current scope. Read only. Thread local. | ||