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App Inventor 2 UDP网络通信教程 - 发送和接收UDP数据包 · App Inventor 2 中文网
... 发送到同网段所有设备
子网广播
如 192.168.1.255
发送到指定子网所有设备（需根据实际网段计算）
组播地址
224.0.0.0 ~ 239.255.255.255
发送到加入同一组播组的设备
UDP 端...
log all sql queries
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18
Maybe check out https://github.com/django-debug-toolbar/django-debug-toolbar
It'll let you see...
How to export query result to csv in Oracle SQL Developer?
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Version I am using
Update 5th May 2012
Jeff Smith has blogged showing, what I believe is the superior method to get CSV output from SQL Developer. Jeff's method is shown as Method 1 below:
Method 1
Add the comment /*csv*/ to your SQL query and run the query ...
The Concept of 'Hold space' and 'Pattern space' in sed
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111
When sed reads a file line by line, the line that has been currently read is inserted into the...
How do I set up NSZombieEnabled in Xcode 4?
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edited Jan 17 '19 at 14:47
GabrieleMartini
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Paging with Oracle
... I would like to be. I have some 250k records, and I want to display them 100 per page. Currently I have one stored procedure which retrieves all quarter of a million records to a dataset using a data adapter, and dataset, and the dataadapter.Fill(dataset) method on the results from the stored pro...
composer: How to find the exact version of a package?
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176
I know it's an old question, but...
composer.phar show
Will show all the currently installe...
How to remove files and directories quickly via terminal (bash shell) [closed]
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answered Apr 15 '10 at 1:26
Jim LewisJim Lewis
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Is cout synchronized/thread-safe?
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106
The C++03 standard does not say anything about it. When you have no guarantees about the threa...
How to save a data.frame in R?
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177
There are several ways. One way is to use save() to save the exact object. e.g. for data frame...