diff options
Diffstat (limited to 'io.c')
-rw-r--r-- | io.c | 23 |
1 files changed, 13 insertions, 10 deletions
@@ -4790,13 +4790,15 @@ pop_last_hash(int *argc_p, VALUE *argv) * The last argument <i>opt</i> qualifies <i>mode</i>. * * # set IO encoding - * nkf_io = IO.popen("nkf -e filename", :external_encoding=>"EUC-JP") - * euc_jp_string = nkf_io.read + * IO.popen("nkf -e filename", :external_encoding=>"EUC-JP") {|nkf_io| + * euc_jp_string = nkf_io.read + * } * * # merge standard output and standard error using * # spawn option. See the document of Kernel.spawn. - * ls_io = IO.popen(["ls", "/", :err=>[:child, :out]]) - * ls_result_with_error = ls_io.read + * IO.popen(["ls", "/", :err=>[:child, :out]]) {|ls_io| + * ls_result_with_error = ls_io.read + * } * * Raises exceptions which <code>IO.pipe</code> and * <code>Kernel.spawn</code> raise. @@ -4818,9 +4820,10 @@ pop_last_hash(int *argc_p, VALUE *argv) * * f = IO.popen("uname") * p f.readlines + * f.close * puts "Parent is #{Process.pid}" * IO.popen("date") { |f| puts f.gets } - * IO.popen("-") {|f| $stderr.puts "#{Process.pid} is here, f is #{f}"} + * IO.popen("-") {|f| $stderr.puts "#{Process.pid} is here, f is #{f.inspect}"} * p $? * IO.popen(%w"sed -e s|^|<foo>| -e s&$&;zot;&", "r+") {|f| * f.puts "bar"; f.close_write; puts f.gets @@ -4829,11 +4832,11 @@ pop_last_hash(int *argc_p, VALUE *argv) * <em>produces:</em> * * ["Linux\n"] - * Parent is 26166 - * Wed Apr 9 08:53:52 CDT 2003 - * 26169 is here, f is - * 26166 is here, f is #<IO:0x401b3d44> - * #<Process::Status: pid=26166,exited(0)> + * Parent is 21346 + * Thu Jan 15 22:41:19 JST 2009 + * 21346 is here, f is #<IO:fd 3> + * 21352 is here, f is nil + * #<Process::Status: pid 21352 exit 0> * <foo>bar;zot; */ |