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| 1 Go Slices: usage and internals | 1 Go Slices: usage and internals |
| 2 5 Jan 2011 | 2 5 Jan 2011 |
| 3 Tags: slice | 3 Tags: slice, technical |
| 4 | 4 |
| 5 Andrew Gerrand | 5 Andrew Gerrand |
| 6 | 6 |
| 7 * Introduction | 7 * Introduction |
| 8 | 8 |
| 9 Go's slice type provides a convenient and efficient means of working with sequen
ces of typed data. Slices are analogous to arrays in other languages, but have s
ome unusual properties. This article will look at what slices are and how they a
re used. | 9 Go's slice type provides a convenient and efficient means of working with sequen
ces of typed data. Slices are analogous to arrays in other languages, but have s
ome unusual properties. This article will look at what slices are and how they a
re used. |
| 10 | 10 |
| 11 * Arrays | 11 * Arrays |
| 12 | 12 |
| 13 The slice type is an abstraction built on top of Go's array type, and so to unde
rstand slices we must first understand arrays. | 13 The slice type is an abstraction built on top of Go's array type, and so to unde
rstand slices we must first understand arrays. |
| (...skipping 210 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 224 c := make([]byte, len(b)) | 224 c := make([]byte, len(b)) |
| 225 copy(c, b) | 225 copy(c, b) |
| 226 return c | 226 return c |
| 227 } | 227 } |
| 228 | 228 |
| 229 A more concise version of this function could be constructed by using `append`.
This is left as an exercise for the reader. | 229 A more concise version of this function could be constructed by using `append`.
This is left as an exercise for the reader. |
| 230 | 230 |
| 231 * Further Reading | 231 * Further Reading |
| 232 | 232 |
| 233 [[http://golang.org/doc/effective_go.html][Effective Go]] contains an in-depth t
reatment of [[http://golang.org/doc/effective_go.html#slices][slices]] and [[htt
p://golang.org/doc/effective_go.html#arrays][arrays]], and the Go [[http://golan
g.org/doc/go_spec.html][language specification]] defines [[http://golang.org/doc
/go_spec.html#Slice_types][slices]] and their [[http://golang.org/doc/go_spec.ht
ml#Length_and_capacity][associated]] [[http://golang.org/doc/go_spec.html#Making
_slices_maps_and_channels][helper]] [[http://golang.org/doc/go_spec.html#Appendi
ng_and_copying_slices][functions]]. | 233 [[http://golang.org/doc/effective_go.html][Effective Go]] contains an in-depth t
reatment of [[http://golang.org/doc/effective_go.html#slices][slices]] and [[htt
p://golang.org/doc/effective_go.html#arrays][arrays]], and the Go [[http://golan
g.org/doc/go_spec.html][language specification]] defines [[http://golang.org/doc
/go_spec.html#Slice_types][slices]] and their [[http://golang.org/doc/go_spec.ht
ml#Length_and_capacity][associated]] [[http://golang.org/doc/go_spec.html#Making
_slices_maps_and_channels][helper]] [[http://golang.org/doc/go_spec.html#Appendi
ng_and_copying_slices][functions]]. |
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