instance method

IO#readline

(?::String sep, ?::Integer limit, ?chomp: ::boolish) -> ::String

readline(sep = $/, chomp: false) → string

readline(limit, chomp: false) → string

readline(sep, limit, chomp: false) → string

# File tmp/rubies/ruby-4.0.0/io.rb, line 133
def readline(sep = $/, limit = nil, chomp: false)
  Primitive.io_readline(sep, limit, chomp)
end

Reads a line as with IO#gets, but raises EOFError if already at end-of-stream.

Optional keyword argument chomp specifies whether line separators are to be omitted.

See also #readchar #readlines #readbyte #read_nonblock also in 4.1 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0