[ruby/stringio] [DOC] Split the examples `StringIO` into the document file

https://github.com/ruby/stringio/commit/04ba28af00

1 files changed, 26 insertions, 0 deletions

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+\IO streams for strings, with access similar to
+{IO}[rdoc-ref:IO];
+see {IO}[rdoc-ref:IO].
+
+### About the Examples
+
+Examples on this page assume that \StringIO has been required:
+
+```
+require 'stringio'
+```
+
+And that these constants have been defined:
+
+```
+TEXT = <<EOT
+First line
+Second line
+
+Fourth line
+Fifth line
+EOT
+
+RUSSIAN = 'тест'
+DATA = "\u9990\u9991\u9992\u9993\u9994"
+```