User:红石小蝈/Sandbox

Here is

RedstoneDave's Main Sandbox

he also has a small sandbox at here

Common Tests

I Love Luo Tianyi

Hello world <b>Hello world</b>

Hello world <s>Hello world</s>

Hello world <del>Hello world</del>

Hello world <u>Hello world</u>

World <s !--Hello-->World</s>

Hello world <i>Hello world</i>

<code>Hello world</code> {{#invoke:Sandbox/红石小蝈/Test|main|<code>Hello world</code>}}

Hello world Hello world Byebye world Byebye world example example

Text forward HelloWorldText afterward

锦依卫6

Chemistry Things

2KMnO₄══（Δ）K₂MnO₄+MnO₂+O₂↑ 2KMnO<sub>4</sub>{{ruby|══|Δ}}K<sub>2</sub>MnO<sub>4</sub>+MnO<sub>2</sub>+O<sub>2</sub>↑

CaCO₃ + 2HCl ══ CaCl₂ + H₂O + CO₂↑ CaCO<sub>3</sub> + 2HCl ══ CaCl<sub>2</sub> + H<sub>2</sub>O + CO<sub>2</sub>↑

$\ce{Cu^{2+} + 4Cl- <-> [CuCl4]^{2-} }$

$\ce{Cu^{2+} + 4NH3 <-> [Cu(NH3)4]^{2+} }$

$\ce{Cu^{2+} + 2OH- -> Cu(OH)2 v}$

$\ce{Cu^{2+} + Fe -> Fe^{2+} + Cu}$

$\ce{2Cu^{2+} + 4I- -> 2CuI v + I2}$

小知识:

如果想打出"<"而不变成html标签可以写成"&lt;",同理">"可以写成"&gt;"
什么？你问我"&"怎么打？看源代码就知道啦，其实是"&amp;"（禁止套娃）。

Translation of the Zen of Python

The Zen of Python, by Tim Peters

优雅胜于丑陋//Beautiful is better than ugly.
显式胜于隐式//Explicit is better than implicit.
简单胜于复杂//Simple is better than complex.
复杂胜于混乱//Complex is better than complicated.
单层胜于嵌套//Flat is better than nested.
稀疏胜于稠密//Sparse is better than dense.
以上六条之外
可读也很重要//Readability counts.
即使情况特殊
规则不应打破//Special cases aren't special enough to break the rules.
实用胜于纯净
尽管优雅更好//Although practicality beats purity.
错误不应忽视//Errors should never pass silently.
除非显式沉默//Unless explicitly silenced.
面对模棱两可
拒绝猜的诱惑//In the face of ambiguity, refuse the temptation to guess.
明显解决办法
应当只有唯一//There should be one-- and preferably only one --obvious way to do it.
方案不尽明显
除非来自荷兰//Although that way may not be obvious at first unless you're Dutch.
肝爆胜于摸鱼
不咕胜于咕咕//Now is better than never.
但是立即完成
通常不如咕咕//Although never is often better than *right* now.
请君向人解释
实现问题方法
难以解释为劣//If the implementation is hard to explain, it's a bad idea.
通俗易懂为好//If the implementation is easy to explain, it may be a good idea.
命名空间极妙
咱们一起来搞//Namespaces are one honking great idea -- let's do more of those!

Wikitext Test

I don't know a patroller named RedstoneDave

<span lang="en">-{Hello world}-</span> Hello world

9 3/4站台

A quick brown fox jumps over the lazy dog.

1. Minecraft中红石中继器(repeater)存在多少种不同的状态（不考虑water_logged）
   • A. 4; B. 8; C. 16; D. 32;
2. Minecraft中下列指令效果与其他三项不同的是
   • A. fill ~ ~ ~ ~ ~ ~ concrete
   • B. setblock ~ ~ ~ concrete
   • C. secblock ~ ~ ~ concrete 0
   • D. excecute @p fill ~ ~ ~ ~ ~ ~ concrete
3. Minecraft的编写语言不包括下面哪种
   • A. Java; B. C++; C.Python; D.以上都有
4. 以下方块中不含有"water_logged"属性的是
   • A. 橡木门(oak_door); B. 火把(torch)
   • C. 堆肥桶(composter); D. 篝火(campfire)

Something Interesting

$$ \vec r = (\dot y\dfrac{\dot x^2 + \dot y^2}{\dot x\ddot y - \ddot x\dot y}, \dot x\dfrac{\dot x^2 + \dot y^2}{\dot y\ddot x - \ddot y\dot x}) $$ $$ s = v_0\sqrt{-\dfrac{h}{g}}\sin \left (\sqrt{-\dfrac{g}{h}}t \right) \quad (v_0^2 \le -gh) $$ $$ \begin{equation} \left\{ \begin{array}{c} \dfrac{\mathrm{d}v}{\mathrm{d}t}=\dfrac{gs}{h} \\ \dfrac{\mathrm{d}s}{\mathrm{d}t}=v \end{array} \right. \end{equation} $$

$$\int_{-\infty}^{+\infty}\dfrac{1-\cos{x} }{x^2}dx$$

0 10 20 30 40 50 60 70 80 90 100

Other

link => User:红石小蝈/Sandbox/Chem

 🀉🀉🀉 

Q^-1AQ <-- This is not Maimeng

 🀀   🀆🀆🀆🀆🀝🀝🀝🀝🀋🀋🀋🀋🀔🀔🀔🀔 

mw.html练习

Hello worldHi Worldafterwards