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

block_params: 
comment: 
- !ruby/struct:SM::Flow::P 
  body: Closes the read end of a duplex I/O stream (i.e., one that contains both a read and a write stream, such as a pipe). Will raise an <tt>IOError</tt> if the stream is not duplexed.
- !ruby/struct:SM::Flow::VERB 
  body: "   f = IO.popen(&quot;/bin/sh&quot;,&quot;r+&quot;)\n   f.close_read\n   f.readlines\n"
- !ruby/struct:SM::Flow::P 
  body: <em>produces:</em>
- !ruby/struct:SM::Flow::VERB 
  body: "   prog.rb:3:in `readlines': not opened for reading (IOError)\n    from prog.rb:3\n"
full_name: IO#close_read
is_singleton: false
name: close_read
params: |
  ios.close_read    => nil

visibility: public