@keyframes
基本写法是一个开始状态和一个结束状态：
css
@keyframes demo-anim {
from {
opacity: 1;
}
to {
opacity: 0;
}
}
See the Pen QNbBOy by Oliver (@ochukai) on CodePen.
其中 animation-iteration-count: number or infinite; 可以设置循环次数，infinite为无限次
还可以定义的很详细：
```css
@keyframes demo-anim {
from {
transform: translate继续阅读 »
This release introduces a number of new feature updates, as detailed in Some new features of xmake v2.1.5.
If you want to known more usage, please see online documents。
Source code: Github, Gitee.
New features
#83: Add add_csnippet and add_cxxsnippet into option for detecting some compiler features.
#83: Add user e继续阅读 »
Question
Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as the Hamming weight).
For example, the 32-bit integer ’11' has binary representation 00000000000000000000000000001011, so the function should return 3.
解说
这道题的意思是统计32位整数二进制格式下的‘1’的个数。
more
Solution
rig继续阅读 »
R rocks in both academia and industry nowadays. A rapidly increasing number of researchers choose R to be one of their productive tools for data analysis and data visualization. It is partially because the software is totally free and open-source but also because the community behind the stage who contributes to nearly继续阅读 »