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Kotlin Ternary Conditional Operator
...condition ? then : else), because
ordinary if works fine in this role.
https://kotlinlang.org/docs/reference/control-flow.html#if-expression
Special case for Null comparison
you can use the Elvis operator
if ( a != null ) a else b
// equivalent to
a ?: b
...
How to secure MongoDB with username and password
... to properly understand.
It's really simple. I'll dumb the following down https://docs.mongodb.com/manual/tutorial/enable-authentication/
If you want to learn more about what the roles actually do read more here: https://docs.mongodb.com/manual/reference/built-in-roles/
1) Start MongoDB without a...
What is the ultimate postal code and zip regex?
...dable IMO. But you would still be missing on the validation part: Zip code 12345 may exist, but 12346 not, maybe 12344 doesn't exist either. How do you check for that with a regex?
You can't.
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MQTT与TCP的区别 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...机制，通知相应topic的订阅者客户端已经离线了。7. 正如https之于http，mqtts支持TLS安全，保证数据传输过程的安全性。8. mqtt协议轻巧、简单，容易实现，mqtt客户端哪怕在单片机中也可以运行。这一点在物联网应用中挺重要的，因...
Instagram how to get my user id from username?
...useful.
You can get user info when a request is made with the url below:
https://www.instagram.com/{username}/?__a=1
E.g:
This url will get all information about a user whose username is therock
https://www.instagram.com/therock/?__a=1
Update i June-20-2019, the API is public now. No authe...
Python equivalent for PHP's implode?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
Nginx url重写rewrite实例详解 - 更多技术 - 清泛网 - 专注IT技能提升
...家有所帮助。nginx rewrite 实现二级域名跳转
当访问http://www.jbyuan.com跳转到http://www.jbyuan.com/nvxingjiankang/
方法一：
这种方法浏览器地址会变www.jbyuan.com/nvxingjiankang/
实现访问如下：
server {
listen 80;
server_name www.test.c...
Nginx url重写rewrite实例详解 - 更多技术 - 清泛网 - 专注IT技能提升
...家有所帮助。nginx rewrite 实现二级域名跳转
当访问http://www.jbyuan.com跳转到http://www.jbyuan.com/nvxingjiankang/
方法一：
这种方法浏览器地址会变www.jbyuan.com/nvxingjiankang/
实现访问如下：
server {
listen 80;
server_name www.test.c...
Nginx url重写rewrite实例详解 - 更多技术 - 清泛网 - 专注IT技能提升
...家有所帮助。nginx rewrite 实现二级域名跳转
当访问http://www.jbyuan.com跳转到http://www.jbyuan.com/nvxingjiankang/
方法一：
这种方法浏览器地址会变www.jbyuan.com/nvxingjiankang/
实现访问如下：
server {
listen 80;
server_name www.test.c...
Nginx url重写rewrite实例详解 - 更多技术 - 清泛网 - 专注IT技能提升
...家有所帮助。nginx rewrite 实现二级域名跳转
当访问http://www.jbyuan.com跳转到http://www.jbyuan.com/nvxingjiankang/
方法一：
这种方法浏览器地址会变www.jbyuan.com/nvxingjiankang/
实现访问如下：
server {
listen 80;
server_name www.test.c...