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class method

IO.binwrite

(::path name, ::_ToS string, ?::Integer offset, ?mode: ::String mode) -> ::Integer

IO.binwrite(path, string, offset = 0, **opts) → integer

static VALUE
rb_io_s_binwrite(int argc, VALUE *argv, VALUE io)
{
    return io_s_write(argc, argv, io, 1);
}

Behaves like IO.write, except that the stream is opened in binary mode with ASCII-8BIT encoding.

See also .binread .console .copy_stream also in 4.0 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0