Commit d1a19235 authored by Rob Pike's avatar Rob Pike

doc/faq: explain the meaning of "runtime"

This truly is a common point of confusion that deserves
explanation in the FAQ.

Change-Id: Ie624e31a2042ca99626fe7570d9c8c075aae6a84
Reviewed-on: https://go-review.googlesource.com/28275Reviewed-by: default avatarIan Lance Taylor <iant@golang.org>
parent 6fb4b15f
......@@ -271,6 +271,27 @@ you will need to abide by the guidelines at
<h2 id="Design">Design</h2>
<h3 id="runtime">
Does Go have a runtime?</h3>
<p>
Go does have an extensive library, called the <em>runtime</em>,
that is part of every Go program.
The runtime library implements garbage collection, concurrency,
stack management, and other critical features of the Go language.
Although it is more central to the language, Go's runtime is analogous
to <code>libc</code>, the C library.
</p>
<p>
It is important to understand, however, that Go's runtime does not
include a virtual machine, such as is provided by the Java runtime.
Go programs are compiled ahead of time to native machine code.
Thus, although the term is often used to describe the virtual
environment in which a program runs, in Go the word &ldquo;runtime&rdquo;
is just the name given to the library providing critical language services.
</p>
<h3 id="unicode_identifiers">
What's up with Unicode identifiers?</h3>
......@@ -881,7 +902,7 @@ would be satisfied by the method
func (v Value) Copy() Value
</pre>
because <code>Value</code> implements the empty interface.
<p>because <code>Value</code> implements the empty interface.
In Go method types must match exactly, so <code>Value</code> does not
implement <code>Copyable</code>.
Go separates the notion of what a
......
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