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MQTT相关知识研究笔记 - 创客硬件开发 - 清泛IT社区，为创新赋能！
1、开源技术选型：
EMQX：https://github.com/emqx/emqx
Mosquitto：https://github.com/eclipse/mosquitto
Mosquitto 不支持分布式集群，但C/C++写的更高效，200KB内存占用，几乎可以运行在一切平台之上，包括树莓派，可以作为小型的消息网关，...
How to download a single commit-diff from GitHub?
...self.
Adding .patch (or .diff) to the commit-URL will give a nice patch:
https://github.com/foo/bar/commit/${SHA}.patch
Thanks to Ten Things You Didn't Know Git And GitHub Could Do...
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im...
Use underscore inside Angular controllers
...
I have implemented @satchmorun's suggestion here:
https://github.com/andresesfm/angular-underscore-module
To use it:
Make sure you have included underscore.js in your project
<script src="bower_components/underscore/underscore.js">
Get it:
bower install angular-u...
How can I install MacVim on OS X?
...
Download the latest build from https://github.com/macvim-dev/macvim/releases
Expand the archive.
Put MacVim.app into /Applications/.
Done.
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impro...
How to handle both a single item and an array for the same property using JSON.net
...ndgrid.com
timestamp: 1337966815
event: open
categories: olduser
Fiddle: https://dotnetfiddle.net/lERrmu
EDIT
If you need to go the other way, i.e. serialize, while keeping the same format, you can implement the WriteJson() method of the converter as shown below. (Be sure to remove the CanWrit...
Change Bootstrap tooltip color
...w::before {
border-bottom-color: #f00;
/* Red */
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.bundle.min.js"></script>
<link href="https://...
DataTable: Hide the Show Entries dropdown but keep the Search box
..."paging": false,
"info": false
});
});
cdn js:
https://code.jquery.com/jquery-3.3.1.min.js
https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.bundle.min.js
https://cdn.datatables.net/1.10.19/js/jquery.dataTables.min.js
https://cdn.datatables.net/1.10.19/js/da...
Why no generics in Go?
...
Go 2
There is a draft design for generics at https://blog.golang.org/go2draft.
Go 1
Russ Cox, one of the Go veterans wrote a blog post entitled The Generic Dilemma, in which he asks
…do you want slow programmers, slow compilers and bloated binaries, or slow exec...
How can I add reflection to a C++ application?
...s, the third is a different approach using gcc:
http://www.donw.org/rfl/
https://bitbucket.org/dwilliamson/clreflect
https://root.cern.ch/how/how-use-reflex
There is now a working group for C++ reflection. See the news for C++14 @ CERN:
https://root.cern.ch/blog/status-reflection-c
Edit 13/08...
client secret in OAuth 2.0
...ttack-secure.com/all-your-facebook-access-tokens-are-belong-to-us
and here https://www.youtube.com/watch?v=twyL7Uxe6sk.
All in all be extra cautious of your usage of third party libraries (common sense actually but if token hijacking is your big concern add another extra to cautious).
I have been r...