Together with the <a href="#Iota"><code>iota</code> constant generator</a>
this mechanism permits light-weight declaration of sequential values:
</p>

<pre>
const (
	Sunday = iota
	Monday
	Tuesday
	Wednesday
	Thursday
	Friday
	Partyday
	numberOfDays  // this constant is not exported
)
</pre>


<h3 id="Iota">Iota</h3>

<p>

pkg time, const March = 3
pkg time, const May = 5
pkg time, const Microsecond = 1000
pkg time, const Millisecond = 1000000
pkg time, const Minute = 60000000000
pkg time, const Monday = 1
pkg time, const Nanosecond = 1
pkg time, const November = 11
pkg time, const October = 10
pkg time, const RFC1123 = "Mon, 02 Jan 2006 15:04:05 MST"

			return false
		}
	}
	return true
}

// It would be nice if the error messages always began with
// the standard file:line: prefix,
// but that's not where we are today.
// It might be at the beginning but it might be in the middle of the printed instruction.
var fileLineRE = regexp.MustCompile(`(?:^|\()(testdata[/\\][\da-z]+\.s:\d+)(?:$|\)|:)`)

// Same as in test/run.go
var (

	"&\n", "& ",
	"|\n", "| ",
	"^\n", "^ ",
	"<\n", "< ",
	">\n", "> ",
	"=\n", "= ",
	"!\n", "! ", // not possible in gofmt today
	"(\n", "(",
	"[\n", "[", // not possible in gofmt today
	"{\n", "{",
	",\n", ",",
	".\n", ". ",
	":\n", ": ", // not possible in gofmt today

	"\n", ";",
)

// gofmtLine returns the gofmt-formatted string for an AST node,
// ensuring that it is on a single line.

Together with the <a href="#Iota"><code>iota</code> constant generator</a>
this mechanism permits light-weight declaration of sequential values:
</p>

<pre>
const (
	Sunday = iota
	Monday
	Tuesday
	Wednesday
	Thursday
	Friday
	Partyday
	numberOfDays  // this constant is not exported
)
</pre>


<h3 id="Iota">Iota</h3>

<p>

cmd/link Command Line Interface

The go command and any other Go-aware build systems invoke cmd/link
to link a collection of packages into a single binary. By default, cmd/link will
present the same interface it does today:

	cmd/link main.a

produces a file named a.out, even if cmd/link does so by invoking the host
linker in external linking mode.

By default, cmd/link will decide the linking mode as follows: if the only

pkg time, const March Month
pkg time, const May Month
pkg time, const Microsecond Duration
pkg time, const Millisecond Duration
pkg time, const Minute Duration
pkg time, const Monday Weekday
pkg time, const Nanosecond Duration
pkg time, const November Month
pkg time, const October Month
pkg time, const RFC1123 ideal-string
pkg time, const RFC1123Z ideal-string