Method: File#initialize

Defined in:
io.c

#new(filename, mode = "r"[, opt]) ⇒ File #new(filename[, mode [, perm]][, opt]) ⇒ File

Opens the file named by filename according to the given mode and returns a new File object.

See IO.new for a description of mode and opt.

If a file is being created, permission bits may be given in perm. These mode and permission bits are platform dependent; on Unix systems, see open(2) and chmod(2) man pages for details.

The new File object is buffered mode (or non-sync mode), unless filename is a tty. See IO#flush, IO#fsync, IO#fdatasync, and IO#sync= about sync mode.

Examples

f = File.new("testfile", "r")
f = File.new("newfile",  "w+")
f = File.new("newfile", File::CREAT|File::TRUNC|File::RDWR, 0644)

Overloads:

  • #new(filename, mode = "r"[, opt]) ⇒ File
  • #new(filename[, mode [, perm]][, opt]) ⇒ File 


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# File 'io.c', line 8370

static VALUE
rb_file_initialize(int argc, VALUE *argv, VALUE io)
{
    if (RFILE(io)->fptr) {
	rb_raise(rb_eRuntimeError, "reinitializing File");
    }
    if (0 < argc && argc < 3) {
	VALUE fd = rb_check_to_int(argv[0]);

	if (!NIL_P(fd)) {
	    argv[0] = fd;
	    return rb_io_initialize(argc, argv, io);
	}
    }
    rb_open_file(argc, argv, io);

    return io;
}