Date: Mon, 31 Mar 2008 06:34:44 +0900
Comment: programming/rubyにC#とRubyの対比表を追加
==================================================================

=== programming/ruby/compare_with_cs/index.wiki.txt
===================================================================
--- programming/ruby/compare_with_cs/index.wiki.txt
+++ programming/ruby/compare_with_cs/index.wiki.txt
@@ -0,0 +1,239 @@
+${smdncms:tags,C#,対比}
+*C#とRubyの対比表
+C#とRubyの対比・比較表です。　「C#で言うところの…」と「Rubyで言うところの…」に対応する記述を対比表としてまとめたものです。　Rubyスクリプトを書いているときに「C#で言うところのアレはRubyではどう書くんだっけ」ということが多いので、すぐに参照できるようよく使う部分を中心にまとめてあります。
+
+-全般的なこと
+--すべてが完全に一致するものではなく、ある程度似た動作をするものを記述している箇所があります
+--引数や記述を一部省略しているので、そういう部分はニュアンスで読んでください
+--メソッドがクラス/インスタンスかどうか(Rubyでは破壊的/非破壊的かどうか)はあまり区別せずに記述しています
+--特に対応するものが無い場合はN/Aと記述してあります
+-C#について
+--C# 3.0、.NET Framework 2.0(と一部Mono 1.2)をベースに書いています
+-Rubyについて
+--Ruby 1.8をベースに書いています
+
+**文字列
+|C#|Ruby|h
+|String.StartsWith("foo")|String =~ /^foo/|
+|String.EndsWith("foo")|String =~ /foo$/|
+|String.ToUpper, String.ToUpperInvariant|String.upcase|
+|String.ToLower, String.ToLowerInvariant|String.downcase|
+|String.Contains, String.IndexOf != -1|String.include?|
+|String.Replace("foo", "bar")|String['foo'] = 'bar'|
+|N/A|String.sub('foo', 'bar')|
+|String.Replace("foo", "bar")|String.gsub('foo', 'bar')|
+|TextReader.ReadLine|String.chomp|
+|N/A|String.chop|
+|int.Parse|String.to_i|
+|float.Parse|String.to_f|
+|String.Copy(String)|String.dup|
+|N/A|String.count('foo')|
+|String.Trim|String.strip|
+|String.TrimStart|String.lstrip|
+|String.TrimEnd|String.rstrip|
+|new String('f', n)|'f' * n|
+|N/A|'foo' * n|
+|String.Split|String.split|
+|N/A|String.slice|
+|String.Substring(index, len)|String[index, len]|
+|String.Substring(from, to - from)|String[from..to]|
+|String.Empty.Equals|String.empty?|
+|String.Format|sprintf|
+|String.Format("{0} {1}", foo, bar)|"#{foo} #{bar}"|
+|Encoding.GetString, StreamReader.Read, etc.|String.unpack|
+|Encoding.GetEncoding("shift_jis").GetString(&br;Encoding.Unicode.GetBytes(String))|String.tosjis|
+|C#|Ruby|f
+
+***ヒアドキュメント
+C#
+ string str = @"line1
+ line2
+ line3";
+
+Ruby
+ str = <<END_OF_STR
+ line1
+ line2
+ line3
+ END_OF_STR
+
+**正規表現
+|C#|Ruby|h
+|Regex.IsMatch, Regex.Match|=~ /.../|
+|Regex.Matches|String.scan(Regexp)|
+|Regex.Replace(String, 'foo')|String.gsub(Regexp, 'foo')|
+|Regex.Replace(String, 'foo', 1)|String.sub(Regexp, 'foo')|
+|Match.Groups[0]|$&|
+|Match.Groups[1], Match.Groups[2], Match.Groups[3]...|$1, $2, $3...|
+|Match.Groups[n]|$~[n]|
+|C#|Ruby|f
+
+**コレクション
+|C#|Ruby|h
+|new[] {0, 1, 2, 3, 4}|[0, 1, 2, 3, 4]|
+|foreach|for item in array|
+|foreach|array.each|
+|List[0]|Array.first|
+|List[List.Length - 1]|Array.last|
+|List.Length|Array.length, Array.size|
+|List.FindAll(delegate(T item) {return item != null;}).Length|Array.nitems|
+|Stack.Push, List.Add|Array.push|
+|Stack.Pop|Array.pop|
+|Queue.Enqueue, List.Insert(0, item)|Array.unshift|
+|Queue.Dequeue|Array.shift|
+|List.Add('foo')|Array << 'foo'|
+|List.AddRange(new[] {0, 1, 2})|Array.concat([0, 1, 2])|
+|List.GetRange(start, length)|Array.slice(start, length)|
+|List.RemoveAll(delegate(T item) {return item == 'foo';})|Array.delete('foo')|
+|List.Sort|Array.sort|
+|List.Contains|Array.include?|
+|List.IndexOf|Array.index|
+|List.LastIndexOf|Array.rindex|
+|List.Reverse|Array.reverse|
+|Stirng.Join|Array.join|
+|List.Sort|Array.sort|
+|N/A|Array.uniq|
+|N/A|Array.flatten|
+|C#|Ruby|f
+
+**ハッシュ
+|C#|Ruby|h
+|new Dictionary<string, int>() {{"a", 1}, {"b", 2}, {"c", 3}}|{'a' => 1, 'b' => 2, 'c' => 3}|
+|foreach|for key, val in Hash|
+|foreach|Hash.each, Hash.each_pair|
+|foreach|Hash.each_key|
+|foreach|Hash.each_value|
+|Dictionary.Count|Hash.length, Hash.size|
+|Dictionary.Keys|Hash.keys|
+|Dictionary.Values|Hash.values|
+|Dictionary.ContainsKey|Hash.key?, Hash.has_key?, Hash.include?|
+|Dictionary.ContainsValue|Hash.value?|
+|Dictionary[key], Dictionary.TryGetValue(key, out value)|Hash.fetch(key), Hash[key]|
+|N/A|Hash.key(value)|
+|N/A|Hash.merge(hash)|
+|C#|Ruby|f
+
+**日付と時刻
+|C#|Ruby|h
+|DateTime.Now|Time.now|
+|DateTime.Ticks,.TotalSeconds|Time.tv_sec|
+|(new DateTime(1970, 1, 1)).AddSeconds(time)|Time.at(time)|
+|DateTime.Parse, DateTime.TryParse|Time.parse|
+|DateTime.ParseExact, DateTime.TryParseExact|Time.strftime|
+|new DateTime(..., DateTimeKind.Utc)|Time.gm(...), Time.utc(...)|
+|new DateTime(..., DateTimeKind.Local)|Time.local(...), Time.mktime(...)|
+|DateTime.ToUniversalTime|Time.getgm, Time.getutc|
+|DateTime.ToLocalTime|Time.getlocal|
+|DateTime.Hour, DateTime.Minute, DateTime.Second|Time.hour, Time.min, Time.sec|
+|DateTime.Year, DateTime.Month, DateTime.Day|Time.year, Time.month, Time.day|
+|DateTime.DayOfWeek|Time.wday|
+|DateTime.DayOfYear|Time.yday|
+|DateTime.ToString("z")|Time.zone|
+|N/A|Time.usec|
+|DateTime.Millisecond|N/A|
+|DateTime.Now.ToString("ddd, d MMM yyyy HH:mm:ss", CultureInfo.InvariantCulture) + " " + &br;DateTime.Now.ToString("zzz", CultureInfo.InvariantCulture).Replace(":", "")|Time.rfc2822, Time.rfc822|
+|DateTime.Now.ToString("r")|Time.httpdate|
+|DateTime.Now.ToString("s")|Time.iso8601, Time.xmlschema|
+|C#|Ruby|f
+
+**IOストリーム
+|C#|Ruby|h
+|Console.Write|p, print|
+|Console.WriteLine|print String + "\n"|
+|Console.In|STDIN, $stdin|
+|Console.Out|STDOUT, $stdout|
+|Console.Error|STDERR, $stderr|
+|Console.SetIn(stream)|$stdin = stream|
+|Console.SetOut(stream)|$stdout = stream|
+|Console.SetError(stream)|$stderr = stream|
+|new FileStream(file)|open(file)|
+|using|
+|using|
+|using|
+|while(!eof) TextReader.ReadLine()|IO.each_line|
+|while(!eof) Stream.ReadByte|IO.each_byte|
+|TextReader.ReadLine()|IO.gets, IO.readline|
+|Stream.Write|IO.print, IO.write|
+|Stream.WriteByte|IO.putc|
+|TextWriter.Write|IO.printf|
+|C#|Ruby|f
+
+**ファイルシステム
+|C#|Ruby|h
+|File.Exists, Directory.Exists|File.exist?|
+|File.Exists|File.file?, FileTest.file?|
+|Directory.Exists|File.directory?, FileTest.directory?|
+|Path.GetFileName|File.basename|
+|Path.GetDirectoryName|File.dirname|
+|Path.GetExtension|File.extname|
+|Path.GetFileNameWithoutExtension|N/A|
+|Path.GetFullPath|File.expand_path|
+|Directory.GetFileSystemEntries(dir)|Dir.entries(path)|
+|Directory.GetFileSystemEntries(dir, pattern)|Dir.glob(pattern)|
+|N/A|File.split|
+|File.Delete|File.delete, File.unlink|
+|File.Move|File.rename|
+|FileStream.SetLength|File.truncate|
+|FileInfo.Length|File.size|
+|Directory.CreateDirectory|Dir.mkdir|
+|Directory.Delete|Dir.rmdir|
+|File.GetLastAccessTime, Directory.GetLastAccessTime|File.atime|
+|N/A|File.ctime|
+|File.GetLastWriteTime, Directory.GetLastWriteTime|File.mtime|
+|File.GetCreationTime, Directory.GetCreationTime|N/A|
+|N/A|File.identical?|
+|Directory.SetCurrentDirectory, Environment.CurrentDirectory|Dir.chdir|
+|Directory.GetCurrentDirectory, Environment.CurrentDirectory|Dir.pwd, Dir.getwd|
+|new FileInfo, new DirectoryInfo, Mono.Unix.Native.Syscall.stat(Mono.Posix.dll)|File.stat|
+|Mono.Unix.Native.Syscall.chmod(Mono.Posix.dll)|File.chmod|
+|Mono.Unix.Native.Syscall.chown(Mono.Posix.dll)|File.chown|
+|Mono.Unix.Native.Stat.st_mode(Mono.Posix.dll)|File.executable?|
+|Mono.Unix.Native.Stat.st_mode(Mono.Posix.dll)|File.readable?|
+|Mono.Unix.Native.Stat.st_mode(Mono.Posix.dll)|File.writable?|
+|Mono.Unix.Native.Syscall.opendir(Mono.Posix.dll)|Dir.open|
+|C#|Ruby|f
+
+**数値演算
+|C#|Ruby|h
+|Math.Pow(3, 2)|3 ** 2|
+|Math.E|Math::E|
+|Math.Pi|Math::PI|
+|Double.NaN.Equals()|Float.nan?|
+|Double.PositiveInfinity.Equals|Float.infinite? == 1|
+|Double.NegativeInfinity.Equals|Float.infinite? == -1|
+|Math.Truncate|Float.truncate|
+|Math.Round|Float.round|
+|Math.Ceiling|Float.ceil|
+|Math.Floor|Float.floor|
+|Math.Exp|Math.exp|
+|Math.Sin, Math.Cos, Math.Tan|Math.sin, Math.cos, Math.tan|
+|Math.Log10|Math.log10|
+|Math.Log|Math.log|
+|Math.Log(x, n)|Math.log(x) / Math.log(n)|
+|C#|Ruby|f
+
+**プロセス
+|C#|Ruby|h
+|Process.Start("echo 'hoge'")|system("echo 'hoge'")|
+|Process.Start("echo 'hoge'", ProcessStartInfo.RedirectStandardOutput)|str = `echo 'hoge'`|
+|ProcessStartInfo.RedirectStandardInput, ProcessStartInfo.RedirectStandardOutput, ProcessStartInfo.RedirectStandardError|Open3.popen3|
+|Process.Start, AppDomain.CreateInstance|fork|
+|Environment.Exit|exit|
+|C#|Ruby|f
+
+**その他・未整理
+|C#|Ruby|h
+|Uri class|URI Module|
+|Convert.ToBase64String|Base64.encode64|
+|Convert.FromBase64String|Base64.decode64|
+|MD5CryptoServiceProvider.ComputeHash|Digest::MD5.digest|
+|new SmtpClient|Net::SMTP.start|
+|new WebClient|Net::HTTP.start|
+|HttpUtility.HtmlEncode|CGI.escapeHTML|
+|HttpUtility.HtmlDecode|CGI.unescapeHTML|
+|HttpUtility.UrlPathEncode|CGI.escape|
+|HttpUtility.UrlEncode|URI.escape|
+|HttpUtility.UrlDecode|URI.unescape|
+|SecurityElement.Escape|CGI.escapeHTML(String.gsub("'", '&quot;'))|
+|C#|Ruby|f
+