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How to create GUID / UUID?
...e several common pitfalls:
Invalid id format (UUIDs must be of the form "xxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx", where x is one of [0-9, a-f] M is one of [1-5], and N is [8, 9, a, or b]
Use of a low-quality source of randomness (such as Math.random)
Thus, developers writing code for production en...
FloatActionBtn 扩展：悬浮操作按钮扩展，可自定义颜色、大小、图标和位置 ...
... no-repeat; } 文档反馈 切换 目录 在线 客服 扫码添加客服咨询 我要 分享 扫码分享到朋友圈 顶部 var qrcode = new QRCode("qrcode", { ...
How can I exclude one word with grep?
...or --invert-match) option of grep as:
grep -v "unwanted_word" file | grep XXXXXXXX
grep -v "unwanted_word" file will filter the lines that have the unwanted_word and grep XXXXXXXX will list only lines with pattern XXXXXXXX.
EDIT:
From your comment it looks like you want to list all lines withou...
What is the boundary in multipart/form-data?
...ltipart/form-data?
Using the boundary, similar to &.
For example:
--XXX
Content-Disposition: form-data; name="name"
John
--XXX
Content-Disposition: form-data; name="age"
12
--XXX--
In that case, the boundary value is XXX. You specify it in the Content-Type header so that the server knows ...
java.sql.SQLException: Incorrect string value: '\xF0\x9F\x91\xBD\xF0\x9F…'
... Nikita Bosik
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answered Dec 7 '12 at 0:15
EsailijaEsailija
128k2222 gold ba...
20个命令行工具监控 Linux 系统性能 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...网络上的进程、NFS、内核等等。这个工具有两个模式：即在线模式和捕捉模式。在线模式适用于实时监控，捕捉模式用于存储输出为 CSV 格式后的处理。
20. Collectl — 一体化性能检测工具
Collectl 是另一个功能强大的基于命令...
WheelView 拓展：滚轮选择框扩展，滚轮日历选择框和旋转日历扩展 · App In...
... no-repeat; } 文档反馈 切换 目录 在线 客服 扫码添加客服咨询 我要 分享 扫码分享到朋友圈 顶部 var qrcode = new QRCode("qrcode", { ...
Xcode build failure “Undefined symbols for architecture x86_64”
...
Undefined symbols for architecture x86_64: "_OBJC_CLASS_$_xxx",
referenced from:
objc-class-ref in yyy.o
This generally means, you are calling "xxx" (it may be a framework or class) from the class "yyy". The compiler can not locate the "xxx" so this error occurs.
You n...
Mysql adding user for remote access
...ons on all DB's as such . See below:
my.cnf (my.ini on windows)
#Replace xxx with your IP Address
bind-address = xxx.xxx.xxx.xxx
then
CREATE USER 'myuser'@'localhost' IDENTIFIED BY 'mypass';
CREATE USER 'myuser'@'%' IDENTIFIED BY 'mypass';
Then
GRANT ALL ON *.* TO 'myuser'@'localhost...
Error: Tablespace for table xxx exists. Please DISCARD the tablespace before IMPORT
I am fairly new to MySQL and I am getting a pretty interesting error on which I cannot find any help via google and the stackoverflow search.
...