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Pass props to parent component in React.js

...ase of direct parent-child relationship. When parent and child have potentially a lot of intermediaries, check this answer. Other solutions are missing the point While they still work fine, other answers are missing something very important. Is there not a simple way to pass a child's props to...
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How to make Entity Framework Data Context Readonly

...nsumer. public class ReadOnlyDataContext { private readonly DbContext _dbContext; public ReadOnlyDataContext(DbContext dbContext) { _dbContext = dbContext; } public IQueryable<TEntity> Set<TEntity>() where TEntity : class { return _dbContext.Set...
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Disable a Button

... I also get an error if I change (_ sender: ) to UIButton . The error reads: Value of type '(UIButton) -> ()' has no member 'isEnabled' – user9470831 Feb 5 '19 at 4:25 ...
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jQuery .each() index?

... .three { background: darkgray; } <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div class="container"> <div class="one"> <select id="my_select"> <option>apple</option> <option&gt...
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Is there an easy way to pickle a python function (or otherwise serialize its code)?

... You could serialise the function bytecode and then reconstruct it on the caller. The marshal module can be used to serialise code objects, which can then be reassembled into a function. ie: import marshal def foo(x): return x*x code_string = marshal.dumps(foo.func_code) Then in the remote proc...
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Switching to landscape mode in Android Emulator

...inux. For Mac users, you only need to use the fn key if the setting "Use all F1, F2 etc. keys as function keys" (under System Preferences -> Keyboard) is checked. left-ctrl+F11on Windows 7 It works fine in Windows 7 for android emulator to change the landscape orientation to portrait and vic...
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Android SDK manager won't open

So I installed the android sdk for Windows: 29 Answers 29 ...
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Why is Everyone Choosing JSON Over XML for jQuery? [closed]

...ng over to JSON . Even Microsoft has integrated support for JSON. What is all the hype over JSON? 19 Answers ...
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Default implementation for Object.GetHashCode()

...{ public class Object { [MethodImpl(MethodImplOptions.InternalCall)] internal static extern int InternalGetHashCode(object obj); public virtual int GetHashCode() { return InternalGetHashCode(this); } } } InternalGetHashCode is mapped to an Objec...
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Significance of -pthread flag when compiling

...plied to both the compiling and linking stage while others don't use it at all and just pass -lpthread to the linking stage. ...