比如公司现在新开一个项目，使用此App的最低版本要求是iOS12。
（也就是说这个App上架后，只有iPhone的iOS版本是12以上的用户才能在App Store里面看到并下载）
这个时候如果我们使用的是最新版Xcode11并且只按默认配置开发的话，会出现以下错误：
'ConnectionOptions' is only available in i...
css选择器中:first-child与:first-of-type是比较容易混淆的概念，这里用案例介绍它们具体的区别。
:first-child 选择器是css2中定义的选择器，从字面意思上来看也很好理解，就是第一个子元素。比如有段代码：
<div>
<p>第一个子元素</p>
<h1&...
Keyboard shortcuts and text editors are nigh-inseparable in the world of content editing productivity. You’ll be hard-pressed to find any WYSIWYG text editor without a solid...
In order to build anything for WordPress, you know that action and filter hooks are the way to go. But hooks are still a bit of a mystery because we don’t really have any con...
Solution:
I would recommend using x11vnc as it provides the actual desktop experience rather than a virtual one.
To install x11vnc enter the following comma...
Is it normal to write so slowly? How can I write more quickly? These are the questions my coaching clients always ask. Like most people, it seems, they think they write more slowly...
和2019道别吧！ 等下次，等将来，等不忙……等来等去，2019年，只剩一天了……谁也无法预知未来，很多事可能一等就等成了永远！别输在一个“等”字上。2020年，加油！
Nginx 的 location 实现了对请求的细分处理，有些 URI 返回静态内容，有些分发到后端服务器等，今天来彻底弄懂它的匹配规则
一个最简单的 location 的例子如下
server {
server_name website.com;
location /admin/ {
# The configurati...
It is not possible to know everything, but it is quite accessible to learn something new everyday. Recently I decided to upgrade my Xcode on my Mac laptop, I sent installed Xcode...
送给已经购买Udemy课程的同学(需要账号登录) 下载udemy-dl
git clone https://github.com/r0oth3x49/udemy-dl.git
安装依赖
pip install -r requirements.txt
开始下载
python udemy-dl.py [课程地址]
例如
python u...