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扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
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扩展App I...
Apache Kafka vs Apache Storm
...nto various sources and sinks (destinations) of data.
Announcement blog - https://www.confluent.io/blog/introducing-kafka-streams-stream-processing-made-simple/
Current Apache documentation - https://kafka.apache.org/documentation/streams/
In 0.11 Kafka the stream processing functionality was fur...
What's the $unwind operator in MongoDB?
...rious operation like sorting, searcing etc.
To know more about $unwind :
https://docs.mongodb.com/manual/reference/operator/aggregation/unwind/
To know more about aggregation :
https://docs.mongodb.com/manual/reference/operator/aggregation-pipeline/
...
How do you sign a Certificate Signing Request with your Certification Authority?
...ificates.
First, create a basic configuration file:
$ touch openssl-ca.cnf
Then, add the following to it:
HOME = .
RANDFILE = $ENV::HOME/.rnd
####################################################################
[ ca ]
default_ca = CA_default # The default ca section...
Office在线预览及PDF在线预览的实现方式大集合 - 更多技术 - 清泛网 - 专注...
...是要硬盘空间呢还是要CPU的资源。
参考链接：
http://www.cnblogs.com/expectszc/archive/2012/04/04/2432149.html
http://www.cnblogs.com/liuning8023/archive/2013/03/04/2943482.html
http://www.cxyclub.cn/n/29549/
非微软方：没有微软的Office软件可安装，只能用第...
How to empty a Heroku database
...
The current, ie. 2017 way to do this is:
heroku pg:reset DATABASE
https://devcenter.heroku.com/articles/heroku-postgresql#pg-reset
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foll...
Code Golf: Collatz Conjecture
...
Befunge
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edited Mar 5 '10 at 18:21
...
How do I put an 'if clause' in an SQL string?
...tatements.
and for more information you can refer official documents on
https://technet.microsoft.com/en-us/library/bb522522(v=sql.105).aspx
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How do I create a unique constraint that also allows nulls?
...s some issues with it such as the requirement of using SCHEMABINDING. Have fun adding a new column to your base table (you'll at minimum have to drop the index, and then drop the view or alter the view to not be schema bound). See the full (long) list of requirements for creating an indexed view in ...
Convert character to ASCII code in JavaScript
...
Fun fact: you don’t really need the 0 (first argument value) — just "\n".charCodeAt() will do.
– Mathias Bynens
Oct 17 '11 at 9:40
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