}
	}
}

func tenRunes(r rune) string {
	runes := make([]rune, 10)
	for i := range runes {
		runes[i] = r
	}
	return string(runes)
}

// User-defined self-inverse mapping function
func rot13(r rune) rune {
	const step = 13
	if r >= 'a' && r <= 'z' {
		return ((r - 'a' + step) % 26) + 'a'
	}
	if r >= 'A' && r <= 'Z' {
		return ((r - 'A' + step) % 26) + 'A'

<h3 id="Representation_of_values">Representation of values</h3>

<p>
Values of predeclared types (see below for the interfaces <code>any</code>
and <code>error</code>), arrays, and structs are self-contained:
Each such value contains a complete copy of all its data,
and <a href="#Variables">variables</a> of such types store the entire value.
For instance, an array variable provides the storage (the variables)

pkg crypto/cipher, type AEAD interface { NonceSize, Open, Overhead, Seal }
pkg crypto/cipher, type AEAD interface, NonceSize() int
pkg crypto/cipher, type AEAD interface, Open([]uint8, []uint8, []uint8, []uint8) ([]uint8, error)
pkg crypto/cipher, type AEAD interface, Overhead() int
pkg crypto/cipher, type AEAD interface, Seal([]uint8, []uint8, []uint8, []uint8) []uint8
pkg crypto/md5, func Sum([]uint8) [16]uint8

pkg go/ast, type SelectStmt struct
pkg go/ast, type SelectStmt struct, Body *BlockStmt
pkg go/ast, type SelectStmt struct, Select token.Pos
pkg go/ast, type SelectorExpr struct
pkg go/ast, type SelectorExpr struct, Sel *Ident
pkg go/ast, type SelectorExpr struct, X Expr
pkg go/ast, type SendStmt struct
pkg go/ast, type SendStmt struct, Arrow token.Pos
pkg go/ast, type SendStmt struct, Chan Expr