Ruby StringIO类用法及代码示例

String 对象上的伪 I/O，接口对应于 IO 。

常用于模拟$stdio或$stderr

例子

require 'stringio'

# Writing stream emulation
io = StringIO.new
io.puts "Hello World"
io.string #=> "Hello World\n"

# Reading stream emulation
io = StringIO.new "first\nsecond\nlast\n"
io.getc #=> "f"
io.gets #=> "irst\n"
io.read #=> "second\nlast\n"