writable?()
  public
  
    
    
Returns true if stat is writable by the effective user id of this
process.
File.stat("testfile").writable?   
   
  
    Show source    
    
      static VALUE
rb_stat_w(VALUE obj)
{
    struct stat *st = get_stat(obj);
    if (geteuid() == 0) return Qtrue;
    if (rb_stat_owned(obj))
        return st->st_mode & S_IWUSR ? Qtrue : Qfalse;
    if (rb_stat_grpowned(obj))
        return st->st_mode & S_IWGRP ? Qtrue : Qfalse;
    if (!(st->st_mode & S_IWOTH)) return Qfalse;
    return Qtrue;
}