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* irb 0.9(doc)
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2628 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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keiju
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2 changed files with 75 additions and 34 deletions
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@ -1,5 +1,5 @@
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irb -- interactive ruby
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$Release Version: 0.5 $
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$Release Version: 0.9 $
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$Revision$
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$Date$
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by Keiju ISHITSUKA(keiju@ishitsuka.com)
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@ -48,7 +48,12 @@ is the standard default action if Readline is installed.
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-f suppress read ~/.irbrc
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-m bc mode (fraction or matrix are available)
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-d set $DEBUG to true (same as `ruby -d')
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-Kc same as `ruby -Kc'
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-r load-module same as `ruby -r'
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--verbose command input is echoed(default)
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--noverbose command input isn't echoed
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--echo commands are echoed immediately before execution(default)
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--noecho commands aren't echoed immediately before execution
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--inspect uses `inspect' for output (the default except bc mode)
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--noinspect doesn't uses inspect for output
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--readline uses Readline extension module
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@ -56,7 +61,7 @@ is the standard default action if Readline is installed.
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--prompt prompt-mode
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--prompt-mode prompt-mode
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switches prompt mode. Pre-defined prompt modes are
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`deflaut', `simple', `xmp' and `inf-ruby'
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`default', `simple', `xmp' and `inf-ruby'
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--inf-ruby-mode uses prompt appreciate for inf-ruby-mode on emacs.
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Suppresses --readline.
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@ -69,8 +74,6 @@ is the standard default action if Readline is installed.
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--irb_debug n sets internal debug level to n (It shouldn't be used)
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-v, --version prints the version of irb
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= Configurations
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irb reads `~/.irbrc' when it is invoked. If `~/.irbrb' doesn't exist
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@ -160,12 +163,17 @@ For irb commands, both simple name and `irb_'-prefixed name are prepared.
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--- exit, quit, irb_exit
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Quits (sub)irb.
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if you've done cb (see below), exit from the binding mode.
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--- conf, irb_context
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Displays current configuration. Modifing the configuration is
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achieved by sending message to `conf'.
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--- conf.eval_history = N
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Sets execution result history.
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N is a integer or nil. If N > 0, the number of historys is N.
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If N == 0, the number of historys is unlimited. If N is nill,
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execution result history isn't used(default).
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--- conf.back_trace_limit
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Sets display lines of backtrace as top n and tail n.
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The default value is 16.
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@ -193,9 +201,6 @@ For irb commands, both simple name and `irb_'-prefixed name are prepared.
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nil: inspect mode in non math mode,
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non inspect mode in math mode.
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--- conf.irb_level
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The level of cb.
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--- conf.math_mode
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Whether bc mode or not.
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@ -223,13 +228,19 @@ For irb commands, both simple name and `irb_'-prefixed name are prepared.
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true: uses
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false: doen't use
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nil: intends to use readline except for inf-reuby-mode (default)
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#
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#--- conf.verbose=T/F
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# Whether verbose messages are display or not.
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--- conf.verbose=T/F
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Whether verbose messages are display or not.
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--- cws, chws, irb_change_workspace [obj]
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obj will be self. If obj is omitted, self will be home-object, or
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the main object of first started irb.
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--- cb, irb_change_binding [obj]
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Enter new binding which has a distinct scope of local variables.
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If obj is given, obj will be self.
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--- pushws, irb_pushws, irb_push_workspace [obj]
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same as UNIX-shell command pushd.
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--- popws, irb_popws, irb_pop_workspace
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same as UNIX-shell command popd
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--- irb [obj]
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Invoke subirb. If obj is given, obj will be self.
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@ -248,10 +259,20 @@ For irb commands, both simple name and `irb_'-prefixed name are prepared.
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--- kill n, irb_kill n
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Kill subirb. The means of n is as same as the case of irb_fg.
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--- souce, irb_source path
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This is a like UNIX-shell command source. evaluate script in path
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on current context.
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--- irb_load path, prev
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irb-version of Ruby's load.
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= System variable
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_ The latest value of evaluation (it is local)
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--- _ The latest value of evaluation (it is local)
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--- __ The history of evaluation values.
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__[line_no] return an evaluation value of line number<line_no>. If
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line_no is a negative, return value before -<line_no> from latest
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value.
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= Session Example
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@ -1,23 +1,19 @@
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irb -- interactive ruby
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$Release Version: 0.6 $
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$Release Version: 0.9 $
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$Revision$
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$Date$
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by Keiju ISHITSUKA(keiju@ishitsuka.com)
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=begin
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= irbとは?
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irbはinteractive rubyの略です. rubyの式を標準入力から簡単に入力/実行す
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るためのツールです.
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irbはinteractive rubyの略です. rubyの式を標準入力から簡単に入力/実行する
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ためのツールです.
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= 起動
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% ruby -r irb -e0
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% irb
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のいずれかで行ないます. 前者の場合irbへのオプション指定は, 以下のように
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なります.
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% ruby -r irb -e0 -- -v
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で行ないます.
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= 使い方
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@ -47,7 +43,12 @@ irb
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-f ~/.irbrc を読み込まない.
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-m bcモード(分数, 行列の計算ができる)
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-d $DEBUG をtrueにする(ruby -d と同じ)
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-Kc ruby -Kcと同じ
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-r load-module ruby -r と同じ.
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--verbose これから実行する行を表示する(デフォルト)
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--noverbose これから実行する行を表示しない
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--echo 実行結果を表示する(デフォルト)
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--noecho 実行結果を表示しない
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--inspect 結果出力にinspectを用いる(bcモード以外はデフォルト).
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--noinspect 結果出力にinspectを用いない.
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--readline readlineライブラリを利用する.
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@ -168,13 +169,17 @@ irb
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--- exit, quit, irb_exit
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終了する.
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サブirbの場合, そのサブirbを終了する.
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cbしている場合, そのバインディングのモードを終了する.
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--- conf, irb_context
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irbの現在の設定を表示する. 設定の変更は, confにメッセージを送るこ
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とによって行なえる.
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--- conf.back_trace_limit
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--- conf.eval_history = N
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実行結果のヒストリ機能の設定.
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nnは整数かnilで nn>0 であればその数だけヒストリにためる。nn==0の時は
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無制限に記憶する、nilだとヒストリ機能はやめる(デフォルト).
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--- Conf.back_trace_limit
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バックトレース表示をバックトレースの頭からn, 後ろからnだけ行なう.
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デフォルトは16
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@ -201,9 +206,6 @@ irb
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nil: 通常モードであれば, inspect modeとなり, mathモードの時は, non
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inspect modeとなる.
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--- conf.irb_level
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参照のみ. irbが何段cbしているか?
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--- conf.math_mode
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参照のみ. bcモード(分数, 行列の計算ができます)かどうか?
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@ -232,13 +234,19 @@ irb
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false: readlineを使わない.
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nil: (デフォルト)inf-reuby-mode以外でreadlineライブラリを利用しよ
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うとする.
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#
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#--- conf.verbose=T/F
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# irbからいろいろなメッセージを出力するか?
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--- conf.verbose=T/F
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irbからいろいろなメッセージを出力するか?
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--- cws, chws, irb_cws, irb_chws, irb_change_workspace [obj]
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objをselfとする. objが省略されたときは, home workspace, すなわち
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irbを起動したときのmain objectをselfとする.
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--- cb, irb_change_binding [obj]
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ローカル変数のスコープが違う新たなbindingに移る. objが指定された
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時は, そのobjをselfとする.
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--- pushws, irb_pushws, irb_push_workspace [obj]
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UNIXシェルコマンドのpushdと同様.
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--- popws, irb_popws, irb_pop_workspace
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UNIXシェルコマンドのpopdと同様.
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--- irb [obj]
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サブirbを立ちあげる. objが指定された時は, そのobjをselfとする.
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@ -257,10 +265,22 @@ irb
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--- kill n, irb_kill n
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サブirbをkillする. nはfgと同じ.
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--- souce, irb_source path
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UNIXシェルコマンドのsourceと似ている. 現在の環境上でpath内のスクリ
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プトを評価する.
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--- irb_load path, prev
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Rubyのloadのirb版.
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= システム変数
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_ 前の計算の実行結果を覚えている(ローカル変数).
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--- _
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前の計算の実行結果を覚えている(ローカル変数).
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___ __
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実行結果の履歴を覚えている.
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__[line_no]で、その行で実行した結果を得ることができる. line_noが負の
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時には、最新の結果から-line_no前の結果を得ることができる.
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= 使用例
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