requires deferring the <code>time.Since</code> call. For example:
</p>

<pre>
t := time.Now()
defer log.Println(time.Since(t)) // non-deferred call to time.Since
tmp := time.Since(t); defer log.Println(tmp) // equivalent to the previous defer

defer func() {
  log.Println(time.Since(t)) // a correctly deferred call to time.Since
}()
</pre>

                writer.println("<a name=\"sec_$version\"></a>")
                writer.println(
                    "<h2>Incubating since $version (${versions[version]?.run { "released on $this" } ?: "unreleased"})</h2>"
                )
                writer.println("<ul>")
                incubatingDescriptions.sorted().forEach { incubating ->
                    writer.println("   <li>${incubating.escape()}</li>")

                    writer.println("<ul>")
                    issues.forEach {
                        writer.println("   <li>${it.escape()}</li>")
                    }
                    writer.println("</ul>")
                }
            }
            writer.println("</body></html>")
        }
    }

    private
    fun String.escape() = replace("<", "&lt;").replace(">", "&gt;")
}

}

func doprint() {
	once.Do(setup)
	print(a)
}

func twoprint() {
	go doprint()
	go doprint()
}
</pre>

<p>
calling <code>twoprint</code> will call <code>setup</code> exactly
once.
The <code>setup</code> function will complete before either call
of <code>print</code>.
The result will be that <code>"hello, world"</code> will be printed
twice.
</p>

</p>

<pre class="grammar">
Function   Behavior

print      prints all arguments; formatting of arguments is implementation-specific
println    like print but prints spaces between arguments and a newline at the end
</pre>

<p>
Implementation restriction: <code>print</code> and <code>println</code> need not
accept arbitrary argument types, but printing of boolean, numeric, and string

</p>

<pre class="grammar">
Function   Behavior

print      prints all arguments; formatting of arguments is implementation-specific
println    like print but prints spaces between arguments and a newline at the end
</pre>

<p>
Implementation restriction: <code>print</code> and <code>println</code> need not
accept arbitrary argument types, but printing of boolean, numeric, and string

	0x001d 00029 (x.go:4)	PCDATA	$0, $0
	0x001d 00029 (x.go:4)	PCDATA	$1, $0
	0x001d 00029 (x.go:4)	CALL	runtime.printlock(SB)
	0x0022 00034 (x.go:4)	MOVQ	$3, (SP)
	0x002a 00042 (x.go:4)	CALL	runtime.printint(SB)
	0x002f 00047 (x.go:4)	CALL	runtime.printnl(SB)
	0x0034 00052 (x.go:4)	CALL	runtime.printunlock(SB)
	0x0039 00057 (x.go:5)	MOVQ	8(SP), BP
	0x003e 00062 (x.go:5)	ADDQ	$16, SP
	0x0042 00066 (x.go:5)	RET
	0x0043 00067 (x.go:5)	NOP