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How to start an application without waiting in a batch file?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How should I structure a Python package that contains Cython code
...ke installation more stable/robust, because user may get different results based on which version of Cython he has installed - he may not even be aware that he has it installed and that it is affecting the building of package.
– Martinsos
Feb 17 '17 at 9:22
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What is the best way to give a C# auto-property an initial value?
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@CallMeLaNN call :base() in your concrete class to construct it's base (abstract)
– Guillaume Massé
Sep 8 '11 at 21:00
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What is the most efficient/elegant way to parse a flat table into a tree?
... MySQL 8.0 supports recursive queries, we can say that all popular SQL databases support recursive queries in standard syntax.
WITH RECURSIVE MyTree AS (
SELECT * FROM MyTable WHERE ParentId IS NULL
UNION ALL
SELECT m.* FROM MyTABLE AS m JOIN MyTree AS t ON m.ParentId = t.Id
)
SELECT * ...
How to pass a user defined argument in scrapy spider
...: Add second argument
Update 2015: Adjust wording
Update 2016: Use newer base class and add super, thanks @Birla
Update 2017: Use Python3 super
# previously
super(MySpider, self).__init__(**kwargs) # python2
Update 2018: As @eLRuLL points out, spiders can access arguments as attributes
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Is module __file__ attribute absolute or relative?
...hon-2.*, the second call incorrectly determines the path.abspath(__file__) based on the current directory:
cwd: C:\codes\py
__file__:cwd_mayhem.py
abspath: C:\codes\py\cwd_mayhem.py
cwd: C:\codes
__file__:cwd_mayhem.py
abspath: C:\codes\cwd_mayhem.py
As noted by @techtonik, in Python 3.4+...
Is returning null bad design? [closed]
... check for it and hence your code does not need to follow a different path based on the return value. You might want to check out the Null Object Pattern which provides more information on this.
For example, if I were to define a method in Java that returned a Collection I would typically prefer t...
In Flux architecture, how do you manage Store lifecycle?
...when you need Store #1 update itself, and then have Store #2 update itself based on both the Action and on the state of Store #1. Flux assumes this situation is an eventuality in a large application. Ideally this situation would not need to happen, and developers should strive to avoid this comple...
App Inventor 2 UrsAI2UDP 拓展 - UDP广播通信协议 · App Inventor 2 中文网
...)
« 返回首页 Iot 专题
拓展下载：
UrsAI2UDP.zip
demo下载：
CLOUD_REMOTE_VIDEO_CAR.aia
原作者开发动机
对于一个项目，应该开发一个与 ESP8266（项目）通信的 Android 应用程序。为了轻松开发应用程序，选择...
Common programming mistakes for Clojure developers to avoid [closed]
...raditional Java hexadecimal values via the 0x prefix. You can also use any base between 2 and 36 by using the "base+r+value" notation, such as 2r101010 or 36r16 which are 42 base ten.
Trying to return literals in an anonymous function literal
This works:
user> (defn foo [key val]
{key va...