Markdown 基本元素
标题
H1
H2
H3
H4
H5
H6
强调
Emphasis, aka italics, with asterisks or underscores.
Strong emphasis, aka bold, with asterisks or underscores.
Combined emphasis with asterisks and underscores.
Strikethrough uses two tildes. Scratch this.
列表
Definition List (dl)
- Definition List Title
- This is a definition list division.
Ordered List (ol)
- List Item 1
- List Item 2
- List Item 3
Unordered List (ul)
- List Item 1
- List Item 2
- List Item 3
段落
Lorem ipsum dolor sit amet, test link consectetur adipiscing elit. Strong text pellentesque ligula commodo viverra vehicula. Italic text at ullamcorper enim. Morbi a euismod nibh. Underline text non elit nisl. Deleted text tristique, sem id condimentum tempus, metus lectus venenatis mauris, sit amet semper lorem felis a eros. Fusce egestas nibh at sagittis auctor. Sed ultricies ac arcu quis molestie. Donec dapibus nunc in nibh egestas, vitae volutpat sem iaculis. Curabitur sem tellus, elementum nec quam id, fermentum laoreet mi. Ut mollis ullamcorper turpis, vitae facilisis velit ultricies sit amet. Etiam laoreet dui odio, id tempus justo tincidunt id. Phasellus scelerisque nunc sed nunc ultricies accumsan.
Interdum et malesuada fames ac ante ipsum primis in faucibus. Sed erat diam, blandit eget felis aliquam, rhoncus varius urna. Donec tellus sapien, sodales eget ante vitae, feugiat ullamcorper urna. Praesent auctor dui vitae dapibus eleifend. Proin viverra mollis neque, ut ullamcorper elit posuere eget.
This is a very long line that will still be quoted properly when it wraps. Oh boy let’s keep writing to make sure this is long enough to actually wrap for everyone. Oh, you can put Markdown into a blockquote.
Maecenas ornare arcu at mi suscipit, non molestie tortor ultrices. Aenean convallis, diam et congue ultricies, erat magna tincidunt orci, pulvinar posuere mi sapien ac magna. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; Praesent vitae placerat mauris. Nullam laoreet ante posuere tortor blandit auctor. Sed id ligula volutpat leo consequat placerat. Mauris fermentum dolor sed augue malesuada sollicitudin. Vivamus ultrices nunc felis, quis viverra orci eleifend ut. Donec et quam id urna cursus posuere. Donec elementum scelerisque laoreet.
表格
| Table Header 1 | Table Header 2 | Table Header 3 |
|---|---|---|
| Division 1 | Division 2 | Division 3 |
| Division 1 | Division 2 | Division 3 |
| Division 1 | Division 2 | Division 3 |
| Markdown | Less | Pretty |
|---|---|---|
| Still | renders | nicely |
| 1 | 2 | 3 |
其他元素 - abbr, acronym, sub, sup, kbd, etc.
Lorem superscript dolor subscript amet, consectetuer adipiscing elit. Nullam dignissim convallis est. Quisque aliquam. cite. Nunc iaculis suscipit dui. Nam sit amet sem. Aliquam libero nisi, imperdiet at, tincidunt nec, gravida vehicula, nisl. Praesent mattis, massa quis luctus fermentum, turpis mi volutpat justo, eu volutpat enim diam eget metus. Maecenas ornare tortor. Donec sed tellus eget sapien fringilla nonummy. NBA Mauris a ante. Suspendisse quam sem, consequat at, commodo vitae, feugiat in, nunc. Morbi imperdiet augue quis tellus. AVE. Use Crtl + C to stop.
图片
分隔线
代码块
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.
| |
#[derive(Debug)]
pub enum State {
Start,
Transient,
Closed,
}
impl From<&'a str> for State {
fn from(s: &'a str) -> Self {
match s {
"start" => State::Start,
"closed" => State::Closed,
_ => unreachable!(),
}
}
}
[
{
"title": "apples",
"count": [12000, 20000],
"description": { "text": "...", "sensitive": false }
},
{
"title": "oranges",
"count": [17500, null],
"description": { "text": "...", "sensitive": false }
}
]
@requires_authorization
def somefunc(param1='', param2=0):
r'''A docstring'''
if param1 > param2: # interesting
print 'Gre\'ater'
return (param2 - param1 + 1 + 0b10l) or None
class SomeClass:
pass
>>> message = '''interpreter
... prompt'''
<!DOCTYPE html>
<title>Title</title>
<style>
body {
width: 500px;
}
</style>
<script type="application/javascript">
function $init() {
return true;
}
</script>
<body>
<p checked class="title" id="title">Title</p>
<!-- here goes the rest of the page -->
</body>
function $initHighlight(block, cls) {
try {
if (cls.search(/\bno\-highlight\b/) != -1)
return process(block, true, 0x0F) +
` class="${cls}"`;
} catch (e) {
/* handle exception */
}
for (var i = 0 / 2; i < classes.length; i++) {
if (checkCondition(classes[i]) === undefined)
console.log('undefined');
}
return (
<div>
<web-component>{block}</web-component>
</div>
)
}
export $initHighlight;
#include <iostream>
int main(int argc, char *argv[]) {
/* An annoying "Hello World" example */
for (auto i = 0; i < 0xFFFF; i++)
cout << "Hello, World!" << endl;
char c = '\n';
unordered_map <string, vector<string> > m;
m["key"] = "\\\\"; // this is an error
return -2e3 + 12l;
}
CREATE TABLE "topic" (
"id" serial NOT NULL PRIMARY KEY,
"forum_id" integer NOT NULL,
"subject" varchar(255) NOT NULL
);
ALTER TABLE "topic"
ADD CONSTRAINT forum_id FOREIGN KEY ("forum_id")
REFERENCES "forum" ("id");
-- Initials
insert into "topic" ("forum_id", "subject")
values (2, 'D''artagnian');
#import <UIKit/UIKit.h>
#import "Dependency.h"
@protocol WorldDataSource
@optional
- (NSString*)worldName;
@required
- (BOOL)allowsToLive;
@end
@property (nonatomic, readonly) NSString *title;
- (IBAction) show;
@end
/**
* @author John Smith <john.smith@example.com>
*/
package l2f.gameserver.model;
public abstract class L2Char extends L2Object {
public static final Short ERROR = 0x0001;
public void moveTo(int x, int y, int z) {
_ai = null;
log("Should not be called");
if (1 > 5) { // wtf!?
return;
}
}
}
import Foundation
@objc class Person: Entity {
var name: String!
var age: Int!
init(name: String, age: Int) {
/* /* ... */ */
}
// Return a descriptive string for this person
func description(offset: Int = 0) -> String {
return "\(name) is \(age + offset) years old"
}
}
@font-face {
font-family: Chunkfive;
src: url("Chunkfive.otf");
}
body,
.usertext {
color: #f0f0f0;
background: #600;
font-family: Chunkfive, sans;
}
@import url(print.css);
@media print {
a[href^="http"]::after {
content: attr(href);
}
}
# The Greeter class
class Greeter
def initialize(name)
@name = name.capitalize
end
def salute
puts "Hello #{@name}!"
end
end
g = Greeter.new("world")
g.salute
# Makefile
BUILDDIR = _build
EXTRAS ?= $(BUILDDIR)/extras
.PHONY: main clean
main:
@echo "Building main facility..."
build_main $(BUILDDIR)
clean:
rm -rf $(BUILDDIR)/*
package main
import "fmt"
func main() {
ch := make(chan float64)
ch <- 1.0e10 // magic number
x, ok := <- ch
defer fmt.Println(`exitting now\`)
go println(len("hello world!"))
return
}
#!/bin/bash
###### CONFIG
ACCEPTED_HOSTS="/root/.hag_accepted.conf"
BE_VERBOSE=false
if [ "$UID" -ne 0 ]
then
echo "Superuser rights required"
exit 2
fi
genApacheConf(){
echo -e "# Host ${HOME_DIR}$1/$2 :"
}
; boilerplate
[package]
name = "some_name"
authors = ["Author"]
description = "This is \
a description"
[[lib]]
name = ${NAME}
default = True
auto = no
counter = 1_000
- if (i < 0) {
- return false;
- }
+ if (i < 0) {
+ return true;
+ }
数学公式
$f(n) = \Theta(g(n)) \land g(n) = \Theta(h(n)) \rightarrow f(n) = \Theta(h(n))$
$\omega(g(n))=\{f(n):\text{存在正常量}c\text{和}n_0\text{，使得对所有}n \geq n_0\text{，有}0\leq cg(n) < f(n)\}$
$$ f^{(i)}(n) = \begin{cases} n \qquad & i = 1 \\ f(f^{(i-1)}(n)) \qquad & i>1 \end{cases} $$$$ A = \begin{bmatrix} A_{11} & A_{12} \\ A_{21} & A_{22} \end{bmatrix} , B = \begin{bmatrix} B_{11} & B_{12} \\ B_{21} & B_{22} \end{bmatrix} , C = \begin{bmatrix} C_{11} & C_{12} \\ C_{21} & C_{22} \end{bmatrix} $$$$\sum^{\lfloor lgn \rfloor}_{h=0} \lceil \frac{n}{2^{h+1}} \rceil O(h) = O(n \sum^{\lfloor lgn \rfloor}_{h=0} \frac{h}{2^h}) = O(n \sum^{\infty}_{h=0} \frac{h}{2^h}) =O(n)$$流程图
sequenceDiagram participant 客户端 participant 代理对象 participant 代理处理器 participant 目标对象 客户端->>代理对象:调用方法 代理对象->>代理处理器:转发代理处理器
Invoke()方法 代理处理器->>目标对象:判断Method
调用目标对象的方法 目标对象->>代理处理器:返回结果 代理处理器->>代理对象:返回结果 代理对象->>客户端:返回结果
graph LR c1[Client1
Socket]--客户端发出连接-->ss[ServerSocket] c2[Client2
Socket]--客户端发出连接-->ss[ServerSocket] ss--服务器接受请求并创建新的Socket-->s1[为Client1创
建的Socket] ss--服务器接受请求并创建新的Socket-->s2[为Client2创
建的Socket] c1--两个Socket间建立专线连接-->s1 c2--两个Socket间建立专线连接-->s2
