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Convert varchar to uniqueidentifier in SQL Server
...LECT CONVERT(uniqueidentifier,STUFF(STUFF(STUFF(STUFF('B33D42A3AC5A4D4C81DD72F3D5C49025',9,0,'-'),14,0,'-'),19,0,'-'),24,0,'-'))
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How to get a vertical geom_vline to an x-axis of class date?
... length=36, by="1 month"), 2),
y=rnorm(72),
category=gl(2,36))
p <- ggplot(tmp, aes(x, y, colour=category)) +
geom_line() +
geom_vline(xintercept=as.numeric(tmp$x[c(13, 24)]),
linetype=4, colour="black")
print(p)
...
BLE（三）APP开发步骤 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...e/2018/11/bleapp.html
Android系统自4.3版本开始，引入了对BLE的支持，详见Bluetooth Low Energy。通过浏览当中的信息，我们可以得知在app开发环节，需要做到如下几件事情：
1. BLE相关权限声明
2. 操作蓝牙之前，判断系统是否支...
Git Tag list, display commit sha1 hashes
...tags/1.4.8
19b1c2c96a9678837f57eac86cf3d22842731510 commit refs/tags/1.4.7
7208212a55c4a56af34da781a7f730d6ddd557a1 commit refs/tags/1.4.6
62ec20337a4125496bd4f56288f3283963153194 commit refs/tags/1.4.5
Result with annotated tags:
e2b2d6a172b76d44cb7b1ddb12ea5bfac9613a44 commit refs/tags/v2.11.0-...
Why doesn't Java support unsigned ints?
...
Jyro117Jyro117
4,3011919 silver badges2727 bronze badges
2
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How to delete a stash created with git stash create?
...
72
You should be using
git stash save
and not
git stash create
because this creates a stas...
Why is NaN not equal to NaN? [duplicate]
..."undefined" - see http://www.cs.berkeley.edu/~wkahan/ieee754status/IEEE754.PDF, page 7 (search for the word "undefined"). As that document confirms, NaN is a well-defined concept.
Furthermore, IEEE approach was to follow the regular mathematics rules as much as possible, and when they couldn't, fol...
How to find out what group a given user has?
...
BombeBombe
72.4k2020 gold badges115115 silver badges125125 bronze badges
...
Detect network connection type on Android
...: http://dl.google.com/io/2009/pres/W_0300_CodingforLife-BatteryLifeThatIs.pdf
ConnectivityManager mConnectivity = null;
TelephonyManager mTelephony = null;
// Skip if no connection, or background data disabled
NetworkInfo info = mConnectivity.getActiveNetworkInfo();
if (info == null || !mConnectiv...
error LNK2019: 无法解析的外部符号_socket，该符号在函数 中被引用 - c++1...
1>NetClient.obj : error LNK2019: 无法解析的外部符号 _closesocket@4，该符号在函数 _main 中被引用
1>NetClient.obj : error LNK2019: 无法解析的外部符号 _inet_ntoa@4，该符号在函数 _main 中被引用
1>NetClient.obj : error LNK2019: 无法解析的外部符...