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Size
Permission
Date
Action
EAGAINWaitReadable
[ DIR ]
drwxr-xr-x
2026-05-01 04:24
EAGAINWaitWritable
[ DIR ]
drwxr-xr-x
2026-05-01 04:24
EINPROGRESSWaitReadable
[ DIR ]
drwxr-xr-x
2026-05-01 04:24
EINPROGRESSWaitWritable
[ DIR ]
drwxr-xr-x
2026-05-01 04:24
EWOULDBLOCKWaitReadable
[ DIR ]
drwxr-xr-x
2026-05-01 04:24
EWOULDBLOCKWaitWritable
[ DIR ]
drwxr-xr-x
2026-05-01 04:24
WaitReadable
[ DIR ]
drwxr-xr-x
2026-05-01 04:24
WaitWritable
[ DIR ]
drwxr-xr-x
2026-05-01 04:24
generic_readable
[ DIR ]
drwxr-xr-x
2026-05-01 04:24
generic_writable
[ DIR ]
drwxr-xr-x
2026-05-01 04:24
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2023-07-26 17:51
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2023-07-26 17:51
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2023-07-26 17:51
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758
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798
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2023-07-26 17:51
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2023-07-26 17:51
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2023-07-26 17:51
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2023-07-26 17:51
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2023-07-26 17:51
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2023-07-26 17:51
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2023-07-26 17:51
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2023-07-26 17:51
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2023-07-26 17:51
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2023-07-26 17:51
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458
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2023-07-26 17:51
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2023-07-26 17:51
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2023-07-26 17:51
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2023-07-26 17:51
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2023-07-26 17:51
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2023-07-26 17:51
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2023-07-26 17:51
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2023-07-26 17:51
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386
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2023-07-26 17:51
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2023-07-26 17:51
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468
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2023-07-26 17:51
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2023-07-26 17:51
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1000
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2023-07-26 17:51
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3.5
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2023-07-26 17:51
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406
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2023-07-26 17:51
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810
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697
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1022
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2023-07-26 17:51
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2023-07-26 17:51
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2023-07-26 17:51
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234
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2023-07-26 17:51
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607
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716
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2023-07-26 17:51
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638
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2023-07-26 17:51
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519
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2023-07-26 17:51
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2023-07-26 17:51
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2023-07-26 17:51
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291
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821
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948
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555
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486
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460
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497
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421
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1.61
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2023-07-26 17:51
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775
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2023-07-26 17:51
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2.54
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2023-07-26 17:51
Save
Rename
U:RDoc::AnyMethod[iI"new:ETI"IO::new;TT:publico:RDoc::Markup::Document:@parts[7o:RDoc::Markup::Paragraph; [I"NReturns a new IO object (a stream) for the given integer file descriptor ;TI"P+fd+ and +mode+ string. +opt+ may be used to specify parts of +mode+ in a ;TI"?more readable fashion. See also IO.sysopen and IO.for_fd.;To:RDoc::Markup::BlankLine o; ; [I"OIO.new is called by various File and IO opening methods such as IO::open, ;TI"!Kernel#open, and File::open.;T@S:RDoc::Markup::Heading: leveli: textI"Open Mode;T@o; ; [I"NWhen +mode+ is an integer it must be combination of the modes defined in ;TI"NFile::Constants (+File::RDONLY+, +File::WRONLY | File::CREAT+). See the ;TI"+open(2) man page for more information.;T@o; ; [I"FWhen +mode+ is a string it must be in one of the following forms:;T@o:RDoc::Markup::Verbatim; [ I"fmode ;TI"fmode ":" ext_enc ;TI"#fmode ":" ext_enc ":" int_enc ;TI"fmode ":" "BOM|UTF-*" ;T:@format0o; ; [I"O+fmode+ is an IO open mode string, +ext_enc+ is the external encoding for ;TI"3the IO and +int_enc+ is the internal encoding.;T@S;; i ;I"IO Open Mode;T@o; ; [I"*Ruby allows the following open modes:;T@o;; [I"B"r" Read-only, starts at beginning of file (default mode). ;TI" ;TI"3"r+" Read-write, starts at beginning of file. ;TI" ;TI"."w" Write-only, truncates existing file ;TI"< to zero length or creates a new file for writing. ;TI" ;TI"="w+" Read-write, truncates existing file to zero length ;TI"9 or creates a new file for reading and writing. ;TI" ;TI"C"a" Write-only, each write call appends data at end of file. ;TI"A Creates a new file for writing if file does not exist. ;TI" ;TI"C"a+" Read-write, each write call appends data at end of file. ;TI"B Creates a new file for reading and writing if file does ;TI" not exist. ;T;0o; ; [I"PThe following modes must be used separately, and along with one or more of ;TI"the modes seen above.;T@o;; [I""b" Binary file mode ;TI"= Suppresses EOL <-> CRLF conversion on Windows. And ;TI"A sets external encoding to ASCII-8BIT unless explicitly ;TI" specified. ;TI" ;TI""t" Text file mode ;T;0o; ; [I"HWhen the open mode of original IO is read only, the mode cannot be ;TI"Nchanged to be writable. Similarly, the open mode cannot be changed from ;TI"write only to readable.;T@o; ; [I"PWhen such a change is attempted the error is raised in different locations ;TI"according to the platform.;T@S;; i;I"IO Encoding;T@o; ; [I"NWhen +ext_enc+ is specified, strings read will be tagged by the encoding ;TI"Iwhen reading, and strings output will be converted to the specified ;TI"encoding when writing.;T@o; ; [ I"OWhen +ext_enc+ and +int_enc+ are specified read strings will be converted ;TI"Ifrom +ext_enc+ to +int_enc+ upon input, and written strings will be ;TI"Jconverted from +int_enc+ to +ext_enc+ upon output. See Encoding for ;TI"8further details of transcoding on input and output.;T@o; ; [I"PIf "BOM|UTF-8", "BOM|UTF-16LE" or "BOM|UTF16-BE" are used, ruby checks for ;TI"Na Unicode BOM in the input document to help determine the encoding. For ;TI"PUTF-16 encodings the file open mode must be binary. When present, the BOM ;TI"Ois stripped and the external encoding from the BOM is used. When the BOM ;TI"Ois missing the given Unicode encoding is used as +ext_enc+. (The BOM-set ;TI"Hencoding option is case insensitive, so "bom|utf-8" is also valid.);T@S;; i;I"Options;T@o; ; [I"H+opt+ can be used instead of +mode+ for improved readability. The ;TI""following keys are supported:;T@o:RDoc::Markup::List: @type: NOTE:@items[o:RDoc::Markup::ListItem:@label[I":mode ;T; [o; ; [I"Same as +mode+ parameter;T@o;;[I":\external_encoding ;T; [o; ; [I"NExternal encoding for the IO. "-" is a synonym for the default external ;TI"encoding.;T@o;;[I":\internal_encoding ;T; [ o; ; [I"NInternal encoding for the IO. "-" is a synonym for the default internal ;TI"encoding.;T@o; ; [I".If the value is nil no conversion occurs.;T@o;;[I":encoding ;T; [o; ; [I"BSpecifies external and internal encodings as "extern:intern".;T@o;;[I":textmode ;T; [o; ; [I"AIf the value is truth value, same as "t" in argument +mode+.;T@o;;[I":binmode ;T; [o; ; [I"AIf the value is truth value, same as "b" in argument +mode+.;T@o;;[I":autoclose ;T; [o; ; [I"GIf the value is +false+, the +fd+ will be kept open after this IO ;TI"instance gets finalized.;T@o; ; [I"PAlso, +opt+ can have same keys in String#encode for controlling conversion ;TI"=between the external encoding and the internal encoding.;T@S;; i;I"Example 1;T@o;; [ I"&fd = IO.sysopen("/dev/tty", "w") ;TI"a = IO.new(fd,"w") ;TI"$stderr.puts "Hello" ;TI"a.puts "World" ;T;0o; ; [I"Produces:;T@o;; [I"Hello ;TI"World ;T;0S;; i;I"Example 2;T@o;; [I"require 'fcntl' ;TI" ;TI"'fd = STDERR.fcntl(Fcntl::F_DUPFD) ;TI";io = IO.new(fd, mode: 'w:UTF-16LE', cr_newline: true) ;TI"io.puts "Hello, World!" ;TI" ;TI"'fd = STDERR.fcntl(Fcntl::F_DUPFD) ;TI"2io = IO.new(fd, mode: 'w', cr_newline: true, ;TI"8 external_encoding: Encoding::UTF_16LE) ;TI"io.puts "Hello, World!" ;T;0o; ; [I"NBoth of above print "Hello, World!" in UTF-16LE to standard error output ;TI">with converting EOL generated by <code>puts</code> to CR.;T: @fileI" io.c;T:0@omit_headings_from_table_of_contents_below0I")IO.new(fd [, mode] [, opt]) -> io ;T0[ I"(p1, p2 = v2, p3 = {});T@�FI"IO;TcRDoc::NormalClass00