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pip installing in global site-packages instead of virtualenv
Using pip3 to install a package in a virtualenv causes the package to be installed in the global site-packages folder instead of the one in the virtualenv folder. Here's how I set up Python3 and virtualenv on OS X Mavericks (10.9.1):
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Compare object instances for equality by their attributes
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369
You should implement the method __eq__:
class MyClass:
def __init__(self, foo, bar):
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App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网
...nary / FromDictionary
错误处理
MQTT服务质量（QoS）：3个等级
保留消息（RetainFlag）
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《App Inventor 2 MQTT拓展入门（保姆级教程）》
基础用法已内置设计器「通信连接」分类里的 MQTT客户端 就是本拓展...
How to detect page zoom level in all modern browsers?
....left-r.right)/body.offsetWidth; (thanks to this example or this answer)
FF3.5 ONLY: screen.width / media query screen width (see below) (takes advantage of the fact that screen.width uses device pixels but MQ width uses CSS pixels--thanks to Quirksmode widths)
FF3.6: no known method
FF4+: media que...
How to add a filter class in Spring Boot?
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23 Answers
23
Active
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How to Test Facebook Connect Locally
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236
It's simple enough when you find out.
Open /etc/hosts (unix) or C:\WINDOWS\system32\drivers\et...
Pythonic way to create a long multi-line string
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2313
Are you talking about multi-line strings? Easy, use triple quotes to start and end them.
s = ...
How do I specify the exit code of a console application in .NET?
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613
3 options:
You can return it from Main if you declare your Main method to return int.
You can ...
How does database indexing work? [closed]
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3614
Why is it needed?
When data is stored on disk-based storage devices, it is stored as blocks ...
Why is my program slow when looping over exactly 8192 elements?
...transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
Matrix multiplication: Small difference in matrix size, large difference in timings
But that's only because there's one other problem with the code.
Starting from the original loop:
for(i=1;i<SIZE-1;i++)
fo...