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Diffstat (limited to 'doc/go_spec.html')
| -rw-r--r-- | doc/go_spec.html | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/doc/go_spec.html b/doc/go_spec.html index f8fe5974a..886f89d12 100644 --- a/doc/go_spec.html +++ b/doc/go_spec.html @@ -1,5 +1,5 @@ <!-- title The Go Programming Language Specification --> -<!-- subtitle Version of Apr 5, 2011 --> +<!-- subtitle Version of Apr 22, 2011 --> <!-- TODO @@ -1155,8 +1155,9 @@ map [string] interface {} The number of map elements is called its length. For a map <code>m</code>, it can be discovered using the built-in function <a href="#Length_and_capacity"><code>len(m)</code></a> -and may change during execution. Values may be added and removed -during execution using special forms of <a href="#Assignments">assignment</a>. +and may change during execution. Elements may be added and removed +during execution using special forms of <a href="#Assignments">assignment</a>; +and they may be accessed with <a href="#Indexes">index</a> expressions. </p> <p> A new, empty map value is made using the built-in @@ -4541,13 +4542,14 @@ Two built-in functions assist in common slice operations. <p> The function <code>append</code> appends zero or more values <code>x</code> -to a slice <code>s</code> and returns the resulting slice, with the same type -as s. Each value must be <a href="#Assignability">assignable</a> to the slice's -element type. +to <code>s</code> of type <code>S</code>, which must be a slice type, and +returns the resulting slice, also of type <code>S</code>. +Each value <code>x</code> must be <a href="#Assignability">assignable</a> to +the <a href="#Slice_types">element type</a> of <code>S</code>. </p> <pre class="grammar"> -append(s S, x ...T) S // S is assignable to []T +append(s S, x ...T) S // T is the element type of S </pre> <p> @@ -4562,6 +4564,9 @@ s0 := []int{0, 0} s1 := append(s0, 2) // append a single element s1 == []int{0, 0, 2} s2 := append(s1, 3, 5, 7) // append multiple elements s2 == []int{0, 0, 2, 3, 5, 7} s3 := append(s2, s0...) // append a slice s3 == []int{0, 0, 2, 3, 5, 7, 0, 0} + +var t []interface{} +t = append(t, 42, 3.1415, "foo") t == []interface{}{42, 3.1415, "foo"} </pre> <p> |