Method: Kernel#printf

Defined in:
io.c

#printf(io, string[, obj ... ]) ⇒ nil #printf(string[, obj ... ]) ⇒ nil

Equivalent to:

io.write(sprintf(string, obj, ...))

or

$stdout.write(sprintf(string, obj, ...))

Overloads:

  • #printf(io, string[, obj ... ]) ⇒ nil

    Returns:

    • (nil)
  • #printf(string[, obj ... ]) ⇒ nil

    Returns:

    • (nil)
[View source]

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# File 'io.c', line 7660

static VALUE
rb_f_printf(int argc, VALUE *argv, VALUE _)
{
    VALUE out;

    if (argc == 0) return Qnil;
    if (RB_TYPE_P(argv[0], T_STRING)) {
	out = rb_ractor_stdout();
    }
    else {
	out = argv[0];
	argv++;
	argc--;
    }
    rb_io_write(out, rb_f_sprintf(argc, argv));

    return Qnil;
}