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Edit File: pread-i.ri
U:RDoc::AnyMethod[iI" pread:ETI" IO#pread;TF:publico:RDoc::Markup::Document:@parts[o:RDoc::Markup::Paragraph; [I"MReads <i>maxlen</i> bytes from <em>ios</em> using the pread system call ;TI"Cand returns them as a string without modifying the underlying ;TI"Ldescriptor offset. This is advantageous compared to combining IO#seek ;TI"Land IO#read in that it is atomic, allowing multiple threads/process to ;TI"Ishare the same IO object for reading the file at various locations. ;TI"<This bypasses any userspace buffering of the IO layer. ;TI"@If the optional <i>outbuf</i> argument is present, it must ;TI"6reference a String, which will receive the data. ;TI"BRaises SystemCallError on error, EOFError at end of file and ;TI"HNotImplementedError if platform does not implement the system call.;To:RDoc::Markup::BlankLine o:RDoc::Markup::Verbatim; [I"DFile.write("testfile", "This is line one\nThis is line two\n") ;TI""File.open("testfile") do |f| ;TI"F p f.read # => "This is line one\nThis is line two\n" ;TI". p f.pread(12, 0) # => "This is line" ;TI", p f.pread(9, 8) # => "line one\n" ;TI"end;T:@format0: @fileI" io.c;T:0@omit_headings_from_table_of_contents_below0I"6ios.pread(maxlen, offset[, outbuf]) -> string ;T0[ I"(p1, p2, p3 = v3);T@ FI"IO;TcRDoc::NormalClass00
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