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IO.readlines(path, rs = $/, chomp: false, opts={}) -> [String] (961.0)

• 3.0

• 特異メソッド

path で指定されたファイルを全て読み込んで、その各行を要素としてもつ配列を返します。

...emlist[例][ruby]{
IO.write("testfile", "line1\nline2,\nline3\n")
IO.readlines("testfile") # => ["line1\n", "line2,\n", "line3\n"]
IO.readlines("testfile", ",") # => ["line1\nline2,", "\nline3\n"]
//}

//emlist[例: rs を取り除く（chomp = true）][ruby]{
IO.write("testfile",...

..."line1,\rline2,\r\nline3,\n")
IO.readlines("testfile", chomp: true) # => ["line1,\rline2,", "line3,"]
IO.readlines("testfile", "\r", chomp: true) # => ["line1,", "line2,", "\nline3,\n"]
//}...