instance method
FileTest#zero?
(::path | ::io file_name) -> bool
File.zero?(file_name) → true or false
file.c
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static VALUE
rb_file_zero_p(VALUE obj, VALUE fname)
{
struct stat st;
if (rb_stat(fname, &st) < 0) return Qfalse;
return RBOOL(st.st_size == 0);
}
Returns true if the named file exists and has a zero size.
file_name can be an IO object.