<!--{
"Title": "The Go Programming Language Specification",
- "Subtitle": "Version of June 22, 2012",
+ "Subtitle": "Version of June 26, 2012",
"Path": "/ref/spec"
}-->
<p>
A type determines the set of values and operations specific to values of that
-type. A type may be specified by a (possibly qualified) <i>type name</i>
-(§<a href="#Qualified_identifiers">Qualified identifier</a>, §<a href="#Type_declarations">Type declarations</a>) or a <i>type literal</i>,
+type. A type may be specified by a
+(possibly <a href="#Qualified_identifiers">qualified</a>) <i>type name</i>
+(§<a href="#Type_declarations">Type declarations</a>) or a <i>type literal</i>,
which composes a new type from previously declared types.
</p>
<pre class="ebnf">
Type = TypeName | TypeLit | "(" Type ")" .
-TypeName = QualifiedIdent .
+TypeName = identifier | QualifiedIdent .
TypeLit = ArrayType | StructType | PointerType | FunctionType | InterfaceType |
SliceType | MapType | ChannelType .
</pre>
<h3 id="Operands">Operands</h3>
<p>
-Operands denote the elementary values in an expression.
+Operands denote the elementary values in an expression. An operand may be a
+literal, a (possibly <a href="#Qualified_identifiers">qualified</a>) identifier
+denoting a
+<a href="#Constant_declarations">constant</a>,
+<a href="#Variable_declarations">variable</a>, or
+<a href="#Function_declarations">function</a>,
+a <a href="#Method_expressions">method expression</a> yielding a function,
+or a parenthesized expression.
</p>
<pre class="ebnf">
-Operand = Literal | QualifiedIdent | MethodExpr | "(" Expression ")" .
+Operand = Literal | OperandName | MethodExpr | "(" Expression ")" .
Literal = BasicLit | CompositeLit | FunctionLit .
BasicLit = int_lit | float_lit | imaginary_lit | char_lit | string_lit .
+OperandName = identifier | QualifiedIdent.
</pre>
-
<h3 id="Qualified_identifiers">Qualified identifiers</h3>
<p>
-A qualified identifier is a non-<a href="#Blank_identifier">blank</a> identifier
-qualified by a package name prefix.
+A qualified identifier is an identifier qualified with a package name prefix.
+Both the package name and the identifier must not be
+<a href="#Blank_identifier">blank</a>.
</p>
<pre class="ebnf">
-QualifiedIdent = [ PackageName "." ] identifier .
+QualifiedIdent = PackageName "." identifier .
</pre>
<p>