官方方法https://www.docker-cn.com/registry-mirror
国内较快的镜像原地址
#Docker 官方中国区
https://registry.docker-cn.com
#网易
http://hub-mirror.c.163.com
#ustc
https:...
✅Here is the plan: THINGS YOU WILL NEED:
- 1 hour per day (30 minutes will work as well).
- a notebook and a pen to write down new vocabulary each day.
- an English song....
drop (someone/something) off
- to leave someone/something at the destination to which one has transported it (捎带)
==============================
Acquaintance
- 相识
==========...
在swift 中使用一些数学函数如： sqrt(), floor(), round(), sin() ，pow() 出现以下错误：
Use of unresolved identifier 'pow'
根据平台的和实际需要，import不同的库
如果仅需要简单的数学函数运算
import Darwin如果还需要其他标准函...
167
+50
Go to this folder which contains dark side of the force:
Xcode 4.2 or prior: /Developer/Library/PrivateFramewo...
let studentsAndscores = ["Amy": 88, "James": 55, "Helen": 99]
Then your function should print 99.
But you don't know what the scores are, so you...
Swift 正确的重命名IBAction函数方法是： 单击函数名右键 refactor , rename
如果简单的重新修改函数名会出现找不到关联IBAction崩溃的情况。
这时可以右键单击storyboard文件，Open As > Source Code ,这时候会出现一个xml文件，在这里查找旧函数名并替换成新的函...
I had built it on my Raspberry Pi 3 Model B Rev 1.2 with Raspbian10 (buster) [arm/v7].You can try to do it on your Raspberry Pi 4.
pi@raspberrypi:~ $ git clone https://github.com/...
今天发现一个奇怪的问题，在iPhone使用 safari 选择定时发布文章到OSC，选择时间后提示不是合法的时间，判断时间的代码如下：
var d = new Date('2020-01-23 23:15');
if (isNaN(d)) {
console.log('isNaN');
}else{
console.log(...