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How to define custom configuration variables in rails
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This works in rails 3.1:
in config/environment.rb (or in config/environments/.. to target a specific environment) :
YourApp::Application.config.yourKey = 'foo'
This will be accessible in controller or views like this:
YourApp::Applicati...
How do I find the location of Python module sources?
...mp package is deprecated (since version 3.4) in favor of importlib (since 3.1) docs.python.org/3.6/library/imp.html
– michael
Sep 16 '18 at 3:53
How to change the type of a field?
...e to array instead of double to string. My actual data was in this format :3.1 whereas simone code is working fine for me
– Pankaj Khurana
Apr 9 '14 at 9:30
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Nginx url重写rewrite实例详解 - 更多技术 - 清泛网移动版 - 专注C/C++及内核技术
...成功设定完成！ 输入指令~
curl -I imcat.tk
会输出：
HTTP/1.1 301 Moved Permanently
Server: nginx/0.7.65
Date: Tue, 03 Aug 2010 01:12:37 GMT
Content-Type: text/html
Content-Length: 185
Connection: keep-alive
Location: http://qinfy.net/
Nginx url重写 rewrite
How can I open multiple files using “with open” in Python?
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As of Python 2.7 (or 3.1 respectively) you can write
with open('a', 'w') as a, open('b', 'w') as b:
do_something()
In earlier versions of Python, you can sometimes use
contextlib.nested() to nest context managers. This won't work as expe...
Rounding float in Ruby
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Note that you don't get trailing zeros with this, so 1.1.round(2) => 1.1 not 1.10
– NotAnAmbiTurner
Nov 10 '17 at 16:19
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Error type 3 Error: Activity class {} does not exist
... This is the only thing that worked for me with Android Studio 3.1 Canary 7.
– NOTiFY
Jan 11 '18 at 14:00
3
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Multiply TimeSpan in .NET
...ry the code above in a Console application, for example, running .NET Core 1.1 or lower, or .NET Framework 4.8 or lower you will be thrown the following exception:
Microsoft.CSharp.RuntimeBinder.RuntimeBinderException:
'Operator '*' cannot be applied to operands of type 'System.TimeSpan' and 'int'...
How to recognize swipe in all 4 directions
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Apple Swift version 3.1 - Xcode Version 8.3 (8E162)
The handy way from Alexandre Cassagne's approach
let directions: [UISwipeGestureRecognizerDirection] = [.up, .down, .right, .left]
for direction in directions {
let gesture = UISwipeGestu...
Android studio using > 100% CPU at all times - no background processes appear to be running
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Power save mode is still available in Android Studio 3.1 and has been improved since earlier versions.
– muneikh
Jul 9 '18 at 13:18
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