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76d856 Ralph Thesen 2023-11-29 21:45:06 1
# Syntax Highlighting
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On this page you can find examples on how An Otter Wiki highlights code block with a given syntax.
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A code block is fenced with three backticks `` ``` `` on the line before and after the code block. To add syntax highlighting specify the language next to the backticks of the first line, e.g.
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7a2860 Ralph Thesen 2024-03-21 01:29:55 7
A fenced code block with language yaml, like
76d856 Ralph Thesen 2023-11-29 21:45:06 8
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```yaml
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version: '3'
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services:
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otterwiki:
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image: redimp/otterwiki:2
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ports:
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- 8080:80
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```
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will be rendered as
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```yaml
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version: '3'
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services:
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otterwiki:
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image: redimp/otterwiki:2
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ports:
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- 8080:80
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```
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Examples for multiple other languages can be found below. All the examples implementing the Fibonacci sequence (and more examples in more languages) can be found on [rosettacode.org](https://rosettacode.org/wiki/Fibonacci_sequence).
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---
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### bash
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```bash
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fib()
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{
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if [ $1 -le 0 ]
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then
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echo 0
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return 0
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fi
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if [ $1 -le 2 ]
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then
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echo 1
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else
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a=$(fib $[$1-1])
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b=$(fib $[$1-2])
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echo $(($a+$b))
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fi
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}
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```
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### C
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```c
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long long int fibb(int n) {
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int fnow = 0, fnext = 1, tempf;
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while(--n>0){
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tempf = fnow + fnext;
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fnow = fnext;
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fnext = tempf;
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}
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return fnext;
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}
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```
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### C++
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```cpp
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#include <numeric>
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#include <vector>
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#include <functional>
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#include <iostream>
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unsigned int fibonacci(unsigned int n) {
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if (n == 0) return 0;
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std::vector<int> v(n, 1);
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adjacent_difference(v.begin(), v.end()-1, v.begin()+1, std::plus<int>());
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// "array" now contains the Fibonacci sequence from 1 up
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return v[n-1];
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}
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```
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### Dockerfile
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```Dockerfile
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FROM alpine:3.18.0
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MAINTAINER mail@example.com
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RUN set -ex \
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&& apk update && apk upgrade \
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&& apk add --no-cache \
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bash curl dhcping iftop httpie netcat-openbsd py3-pip \
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py3-setuptools vim git
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USER root
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WORKDIR /root
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ENV HOSTNAME toolkit
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CMD ["bash"]
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```
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### Go
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```go
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import (
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"math/big"
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)
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func fib(n uint64) *big.Int {
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if n < 2 {
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return big.NewInt(int64(n))
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}
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a, b := big.NewInt(0), big.NewInt(1)
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for n--; n > 0; n-- {
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a.Add(a, b)
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a, b = b, a
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}
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return b
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}
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```
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### Haskell
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```haskell
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fib x =
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if x < 1
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then 0
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else if x == 1
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then 1
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else fibs !! (x - 1) + fibs !! (x - 2)
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where
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fibs = map fib [0 ..]
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```
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### html
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```html
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<title>The title goes here</title>
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</head>
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<body>
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<!-- a comment -->
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The content goes here.
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</body>
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</html>
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```
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### json
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```json
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{
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"mixed list": [
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"string",
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42
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],
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"object": {
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"key": "value",
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"array": [
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{
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"null_value": null
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},
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{
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"boolean": true
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},
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{
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"float": 1.2
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}
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]
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},
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"content": "Some lines\nwith line breaks"
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}
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```
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### nginx
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```nginx
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user www www;
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worker_processes 2;
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pid /var/run/nginx.pid;
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error_log /var/log/nginx.error_log debug | info | notice | warn | error | crit;
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events {
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connections 2000;
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use kqueue | rtsig | epoll | /dev/poll | select | poll;
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}
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http {
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log_format main '$remote_addr - $remote_user [$time_local] '
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'"$request" $status $bytes_sent '
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'"$http_referer" "$http_user_agent" '
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'"$gzip_ratio"';
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send_timeout 3m;
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client_header_buffer_size 1k;
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...
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```
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### python
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```python
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def fibMemo():
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pad = {0:0, 1:1}
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def func(n):
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if n not in pad:
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pad[n] = func(n-1) + func(n-2)
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return pad[n]
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return func
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fm = fibMemo()
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for i in range(1,31):
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print fm(i),
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```
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### php
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```php
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<?php
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function fibIter($n) {
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if ($n < 2) {
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return $n;
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}
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$fibPrev = 0;
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$fib = 1;
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foreach (range(1, $n-1) as $i) {
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list($fibPrev, $fib) = array($fib, $fib + $fibPrev);
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}
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return $fib;
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}
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?>
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```
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### rust
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```rust
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use std::mem;
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fn main() {
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fibonacci(0,1);
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}
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fn fibonacci(mut prev: usize, mut curr: usize) {
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mem::swap(&mut prev, &mut curr);
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if let Some(n) = curr.checked_add(prev) {
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println!("{}", n);
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fibonacci(prev, n);
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}
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}
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```
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### yaml
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```yaml
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---
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mixed list:
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- string
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- 42
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object:
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key: value
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array:
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- null_value:
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- boolean: true
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- float: 1.2
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content: |-
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Some lines
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with line breaks
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```
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### xml
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```xml
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<?xml version="1.0" encoding="UTF-8" ?>
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<root>
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<mixed_list>string</mixed_list>
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<mixed_list>42</mixed_list>
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<object>
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<key>value</key>
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<array>
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<null_value />
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</array>
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<array>
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<boolean>true</boolean>
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</array>
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<array>
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<float>1.2</float>
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</array>
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</object>
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<content>Some lines
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with line breaks</content>
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</root>
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```
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