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.....................................................................................................................................--- !ruby/object:RI::MethodDescription 
aliases: []

block_params: 
comment: 
- !ruby/struct:SM::Flow::P 
  body: Reads a line as with <tt>IO#gets</tt>, but raises an <tt>EOFError</tt> on end of file.
full_name: IO#readline
is_singleton: false
name: readline
params: |
  ios.readline(sep_string=$/)   => string

visibility: public