End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

ARGF#binmode?

ARGF.binmode? → true or false

static VALUE
argf_binmode_p(VALUE argf)
{
    return ARGF.binmode ? Qtrue : Qfalse;
}

Returns true if ARGF is being read in binary mode; false otherwise. To enable binary mode use ARGF.binmode.

For example:

Example

ARGF.binmode?  #=> false
ARGF.binmode
ARGF.binmode?  #=> true

See also #binmode #close #argv #closed? also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1