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How to list active / open connections in Oracle?
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Use the V$SESSION view.
V$SESSION displays session information for each current session.
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How to check existence of user-define table type in SQL Server 2008?
I have a user-defined table type. I want to check it's existence before editing in a patch using OBJECT_ID(name, type) function.
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psycopg2: insert multiple rows with one query
I need to insert multiple rows with one query (number of rows is not constant), so I need to execute query like this one:
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Python initializing a list of lists [duplicate]
I intend to initialize a list of list with length of n.
1 Answer
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BLE（二）信道&数据包&协议栈格式 - 创客硬件开发 - 清泛IT社区，...
文章源自：https://www.gandalf.site/2018/11/ble_23.html
参考低功耗蓝牙（BLE）安全初探
0x1 信道BLE的物理通道即“频道，分别是‘f=2402+k*2 MHz, k=0, … ,39’，带宽为2MHz”的40个RF Channel。
其中，有3个信道是advertising channel（广播通道）...
Get current directory name (without full path) in a Bash script
...from cding through symbolic links, whether bash has the -o physical option set, and so on. This used to get especially nasty around handling of automounted directories, where recording the physical path instead of the logical one would produce a path that, if used, would allow the automounter to sp...
Default filter in Django admin
...ected . When I use list_filter in Django admin, the filter is by default set to 'All' but I want to set it to pending by default.
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What does the 'b' character do in front of a string literal?
Apparently, the following is the valid syntax:
8 Answers
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error upon assigning Layout: BoxLayout can't be shared
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Your problem is that you're creating a BoxLayout for a JFrame (this), but setting it as the layout for a JPanel (getContentPane()). Try:
getContentPane().setLayout(
new BoxLayout(getContentPane(), BoxLayout.PAGE_AXIS)
);
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NodeJS require a global module/package
...ook in the folder where global modules are installed.
You can fix this by setting the NODE_PATH environment variable. In Linux this will be:
export NODE_PATH=/usr/lib/node_modules
Note: This depend on where your global modules are actually installed.
See: Loading from the global folders.
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