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What is the difference between an ORM and an ODM?
... ODM, as far as I understand the concept, ORM (Object Relational Mapper) maps the relations between data, where as ODM (Object Document Mapper) deals with documents. Am I right in assuming that mySQL is an example of ORM and MongoDB is a example of ODM?
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大单融资后，MOOC去哪儿 - 资讯 - 清泛网 - 专注C/C++及内核技术
...高等教育在任何国家都是由国家主导的，MOOC已经是现在最‘市场化’的表现了。”据了解，过来人一直致力于大学生职业培训。对不少人而言都属于刚需的职业教育，在打通高等教育与职业教育的壁垒，进而形成闭环后，...
How does a Linux/Unix Bash script know its own PID?
...ess. It might be a bit ugly, but it works. Example:
sleep 1 &
mypid=$(ps -o ppid= -p "$!")
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Revert the `--no-site-packages` option with virtualenv
... include-system-site-packages = false Change this value and call Activate.ps1
– georgik
May 24 '15 at 12:12
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App Inventor 2 蓝牙发送十六进制字节方案：文本转Hex字节详解 - App应用开...
...个字符一组，分别解析高位和低位，组合成一个字节值，最后用 WriteBytes 发送。
1. HexCharToValue 辅助过程将单个十六进制字符（0-9, A-F, a-f）转换为对应的数值：
"0"~"9" → 0~9"A"~"F" → 10~15"a"~&q...
Nohup is not writing log to output file
... > cmd.log &
or
nohup python -u ./cmd.py > cmd.log &
https://docs.python.org/2/using/cmdline.html#cmdoption-u
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Is it possible to delete an object's property in PHP?
...se, unset($object['literal_key']) and unset($object->{'literal_key'})). PS Hm, I may be wrong, though, in thinking the thing I'm editing is an object, not an array
– YakovL
Jan 5 '19 at 13:28
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Why is $$ returning the same id as the parent process?
...was ***
dd if=/dev/diskx of=/dev/disky
Then you would use:
PIDs=$(ps | grep dd | grep if | cut -b 1-5)
What happens here is it pipes all needed unique characters to a field and that field can be echoed using
echo $PIDs
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Difference between Label and TextBlock
...ight than Label and better suited for simpler, noninteractive scenarios.
PS: However, if you want access keys to work or want a more flexible or graphical design, you’ll need to use Label.
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Using HeapDumpOnOutOfMemoryError parameter for heap dump for JBoss
...ith the -XX:HeapDumpPath= option. For
example -XX:HeapDumpPath=/disk2/dumps
will cause the heap dump to be
generated in the /disk2/dumps
directory.
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