Method: StringIO.open

Defined in:

ext/stringio/stringio.c

.open(string = '', mode = 'r+') {|strio| ... } ⇒ Object

Note that mode defaults to 'r' if string is frozen.

Creates a new StringIO instance formed from string and mode; see Access Modes.

With no block, returns the new instance:

strio = StringIO.open # => #<StringIO>

With a block, calls the block with the new instance and returns the block’s value; closes the instance on block exit.

StringIO.open {|strio| p strio }
# => #<StringIO>

Related: StringIO.new.

Yields:

• (strio)

# File 'ext/stringio/stringio.c', line 347

static VALUE
strio_s_open(int argc, VALUE *argv, VALUE klass)
{
    VALUE obj = rb_class_new_instance_kw(argc, argv, klass, RB_PASS_CALLED_KEYWORDS);
    if (!rb_block_given_p()) return obj;
    return rb_ensure(rb_yield, obj, strio_finalize, obj);
}