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How do I handle too long index names in a Ruby on Rails ActiveRecord migration?
...id", "subject_type_id"],
:unique => true,
:name => 'my_index'
If using the :index option on references in a create_table block, it takes the same options hash as add_index as its value:
t.references :long_name, index: { name: :my_index }
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What is the purpose of the Visual Studio Hosting Process?
...re's another one that you're bound to run into sooner or later: it uses a different app.config file. The active one is named yourapp.vshost.exe.config. Watch out for this when you make manual changes to the file.
Another feature it supports that's very visible when you debug your app but isn't me...
“please check gdb is codesigned - see taskgated(8)” - How to get gdb installed with homebrew code si
...ust first code sign the binary. This signature depends on a particular certificate, which the user must create and register with the system.
To create a code signing certificate, open the Keychain Access application. Choose menu Keychain Access -> Certificate Assistant -> Create a Certificate...
Why do most fields (class members) in Android tutorial start with `m`?
...se m for 'members' of a class. So when you're programming you can see the difference between local and member variables.
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How to adjust an UIButton's imageSize?
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If I understand correctly what you're trying to do, you need to play with the buttons image edge inset. Something like:
myLikesButton.imageEdgeInsets = UIEdgeInsets(top, left, bottom, right)
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How to change background color in android app
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The first two letters of an 8 letter color code provide the alpha value, if you are using the html 6 letter color notation the color is opaque.
Eg :
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SensorUtil 传感器工具扩展：在后台和屏幕关闭时保持传感器工作 · App Inv...
... 权限要求
通知权限：Android 13+ 需要 POST_NOTIFICATIONS 权限才能显示通知
电池优化豁免：要在打盹模式下运行，需要请求忽略电池优化
设计器属性
UrsAI2SensorUtil 组件参考
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SQL - Rounding off to 2 decimal places
...es.I also need to display only up to 2 numbers after the decimal point. So if I have minutes as 650.Then hours should be 10.83
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When converting a project to use ARC what does “switch case is in protected scope” mean?
... answered Sep 26 '11 at 23:40
FeifanZFeifanZ
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Positioning a div near bottom side of another div
...ioning the green div after the word "Outer". I've updated the code to specify "left: 0".
– RichieHindle
May 13 '09 at 14:05
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