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Adds syntax highlighting

emersion 2016-06-14 15:42:32 +02:00
parent 3b81f03c5c
commit 664cdd902f
1 changed files with 10 additions and 10 deletions
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20
Switch.md

@ -4,7 +4,7 @@ Spec: https://golang.org/ref/spec#Switch_statements
Go's ` switch ` statements are pretty neat. For one thing, you don't need to break at the end of each case.
```
```go
switch c {
case '&':
esc = "&"
@ -27,7 +27,7 @@ default:
Switches work on values of any type.
```
```go
switch syscall.OS {
case "windows":
sd = &sysDir{
@ -63,7 +63,7 @@ default:
In fact, you don't need to switch on anything at all. A switch with no value means "switch true", making it a cleaner version of an if-else chain, as in this example from Effective Go:
```
```go
func unhex(c byte) byte {
switch {
case '0' <= c && c <= '9':
@ -81,7 +81,7 @@ func unhex(c byte) byte {
Go's ` switch ` statements ` break ` implicitly, but ` break ` is still useful:
```
```go
command := ReadCommand()
argv := strings.Fields(command)
switch argv[0] {
@ -102,7 +102,7 @@ default:
To fall through to a subsequent case, use the ` fallthrough ` keyword:
```
```go
// Unpack 4 bytes into uint32 to repack into base 85 5-byte.
var v uint32
switch len(src) {
@ -123,7 +123,7 @@ case 1:
The 'fallthrough' must be the last thing in the case; you can't write something like
```
```go
switch {
case f():
if g() {
@ -136,7 +136,7 @@ default:
```
However, you can work around this by using a 'labeled' `fallthrough`:
```
```go
switch {
case f():
if g() {
@ -154,7 +154,7 @@ default:
If you want to use multiple values in the same case, use a comma-separated list.
```
```go
func letterOp(code int) bool {
switch chars[code].category {
case "Lu", "Ll", "Lt", "Lm", "Lo":
@ -167,7 +167,7 @@ func letterOp(code int) bool {
With a type switch you can switch on the type of an interface value (only):
```
```go
func typeName(v interface{}) string {
switch v.(type) {
case int:
@ -182,7 +182,7 @@ func typeName(v interface{}) string {
You can also declare a variable and it will have the type of each ` case `:
```
```go
func do(v interface{}) string {
switch u := v.(type) {
case int: