Hexo 测试页

[2017-04-24]

Install

--------- Day 1 ---------

Ruby'properties

Note：

summary

Todo

1. "Hello, world."

2. 找下标

index 方法

=~ 方法

3. 重复打印

each 方法

更优雅的 *方法

4. 循环

5.&6. 猜数字.rb

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--------- Day 2 ---------

Note

函数

数组

散列表

代码块和yield

类

summary

Todo

1. each与枚举

2. 树与方法

3. grep

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--------- Day 3 ---------

Note

元编程

summary

Todo

CSV程序

---- More about Ruby ----

Ruby 的核心优势

不足之处

连接符test

- 1

-- 2

--- 3

---- 4

----- 5

------ 6

------- 7

-------- 8

--------- 9

highlight-test

#include <stdio.h>

int main() 
{
    printf("hello, world\n");
    return 0;
}

# Guess_Number.rb https://gist.github.com/inkydragon/247dea86ec79d9d100faf930527fc515 test.md 
# Guess num between [0..9]
num = rand(10)
puts "Let's guess number !\nHave a guess!\n" 
loop do
    tmp = gets.to_i
    puts "Too High" if num < tmp
    puts "Too Low" if num > tmp
    break if num == gets.to_i 
end
puts "Yes! rand number is #{num}"

---

date & update test

date: 2017-02-07 17:00:31
updated: 1017-02-07 16:43:31

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LaTeX Supposed-test

The characteristic polynomial $\chi(\lambda)$ of the $3 \times 3$ matrix

$$\left( \begin{array}{ccc} a & b & c \\ d & e & f \\ g & h & i \end{array} \right)$$

is given by the formula

$$\chi(\lambda) = \left| \begin{array}{ccc} \lambda - a & -b & -c \\ -d & \lambda - e & -f \\ -g & -h & \lambda - i \end{array} \right|.$$ $$y'=ay$$ $$\Updownarrow$$ $$y=Ce^{at}$$