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Using .NET, how can you find the mime type of a file based on the file signature not the extension
...g an appropriate MIME type from binary data. The final result depends on a combination of server-supplied MIME type headers, file extension, and/or the data itself. Usually, only the first 256 bytes of data are significant.
So, read the first (up to) 256 bytes from the file and pass it to FindMim...
SharedPreferences.onSharedPreferenceChangeListener not being called consistently
...s that you cannot use an anonymous inner class as a listener, as it will become the target of garbage collection as soon as you leave the current scope. It will work at first, but eventually, will get garbage collected, removed from the WeakHashMap and stop working.
Keep a reference to the listener...
bash/fish command to print absolute path to a file
Question: is there a simple sh/bash/zsh/fish/... command to print the absolute path of whichever file I feed it?
20 Answers...
Can you overload controller methods in ASP.NET MVC?
...de or your attribute?
Phil has an article related to this: http://haacked.com/archive/2008/08/29/how-a-method-becomes-an-action.aspx
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How do I create a basic UIButton programmatically?
...ift their finger, giving them the option of cancelling by dragging away (recommended in Apple Human Interface Guidelines)
– ayreguitar
Jul 29 '11 at 15:33
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Rerender view on browser resize with React
... you want to use the window size.
Using React classes:
You can listen in componentDidMount, something like this component which just displays the window dimensions (like <span>Window size: 1024 x 768</span>):
import React from 'react';
class ShowWindowDimensions extends React.Compone...
Just disable scroll not hide it?
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For those reading the comments for a solution, the last fiddle provides a solution for disabling and re-enabling the scrollbar whilst retaining the scrollbar position in both cases. Thanks!
– user1063287
Jan...
What is the easiest way to remove all packages installed by pip?
...to exclude those lines and remove the packages manually (elevated from the comments below):
pip freeze | grep -v "^-e" | xargs pip uninstall -y
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Smart pointers: who owns the object? [closed]
...a naked pointer, the rules can be documented, but won't be enforced by the compiler and the code.
– Fabio Ceconello
May 18 '09 at 23:07
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How do I see if Wi-Fi is connected on Android?
...... your code here could throw a null pointer error. See developer.android.com/training/basics/network-ops/managing.html and in particular "The method getActiveNetworkInfo() returns a NetworkInfo..."
– eb80
Jun 5 '14 at 12:24
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