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BLE协议—广播和扫描 - 创客硬件开发 - 清泛IT社区,为创新赋能!
...向广播(ADV_IND):可以被连接,可以回复扫描响应包,最常用的广播类型,适合大部分场景。
可连接的定向广播(ADV_DIRECT_IND):可以被连接,不可以回复扫描响应包,适用于连接特定的主设备。
可扫描非定向广播(ADV_SCAN_IN...
What is the precise meaning of “ours” and “theirs” in git?
...o many times I've put up a small reference website to help me remember:
https://nitaym.github.io/ourstheirs/
Here are the basics:
Merges:
$ git checkout master
$ git merge feature
If you want to select the version in master:
$ git checkout --ours codefile.js
If you want to select the versio...
Foreign keys in mongo?
...te collection with cities, but I don't know how to bind cities with items. PS sorry for my bad english.
– Mark Pegasov
Jun 13 '11 at 17:53
...
Does “untyped” also mean “dynamically typed” in the academic CS world?
... this is standard practice in academic literature. To understand it, it helps to know that the notion of "type" was invented in the 1930s, in the context of lambda calculus (in fact, even earlier, in the context of set theory). Since then, a whole branch of computational logic has emerged that is kn...
HTML table with 100% width, with vertical scroll inside tbody [duplicate]
... sticky; top: 0; }
/* Just common table stuff. */
table { border-collapse: collapse; width: 100%; }
th, td { padding: 8px 16px; }
th { background:#eee; }
<div class="tableFixHead">
<table>
<thead>
<tr><th>TH 1</th><th>TH 2</th&g...
What are the best practices for using a GUID as a primary key, specifically regarding performance?
...Index Debate..........again!
Disk space is cheap - that's not the point!
PS: of course, if you're dealing with just a few hundred or a few thousand rows - most of these arguments won't really have much of an impact on you. However: if you get into the tens or hundreds of thousands of rows, or you ...
互联网健身的火爆:技术驱动是内因 资本只是点缀 - 资讯 - 清泛网 - 专注C/...
...资本寒冬到来,很多行业的创业者们都在谋划着过冬的“最佳姿势”。尚未拿到融资的创业者们开始通过各种路演、投资峰会、宣讲会获取资本关注;已经拿到融资的创业者们开始创新发展模式,谋求企业更加安全地过冬。而有...
ctypes - Beginner
...specific problems on this site, I'm sure the community would help you out.
PS: I'm assuming you're on Linux because you've used ctypes.CDLL('libc.so.6'). If you're on another OS, things might change a little bit (or quite a lot).
...
In Django, how does one filter a QuerySet with dynamic field lookups?
...To "simply implement" this application would beget astronomical (>200 apps ^21 foos) functions to meet the requirements. You're reading purpose and intent into the example; you shouldn't. :)
– Brian M. Hunt
Nov 22 '08 at 15:07
...
Using @include vs @extend in Sass?
...much about it because web server's gzip compression will take care of it.
PS Note that you can declare placeholder classes within media queries.
Update 2014-12-28: Extends produce more compact CSS than mixins do, but this benefit is diminished when CSS is gzipped. If your server serves gzipped CSS...
