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Getting the error “Missing $ inserted” in LaTeX

... The "Missing $ inserted" is probably caused by the underscores and bars. These characters in LaTeX have special meaning in math mode (which is delimited by $ characters). Try escaping them; e.g. update\_element instead of update_element. However, if you're trying to display code, a bet...
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Super-simple example of C# observer/observable with delegates

...re's an example: using System; class Observable { public event EventHandler SomethingHappened; public void DoSomething() => SomethingHappened?.Invoke(this, EventArgs.Empty); } class Observer { public void HandleEvent(object sender, EventArgs args) { Console.Wri...
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Applying function with multiple arguments to create a new pandas column

I want to create a new column in a pandas data frame by applying a function to two existing columns. Following this answer I've been able to create a new column when I only need one column as an argument: ...
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How do I get a consistent byte representation of strings in C# without manually specifying an encodi

... your goal is, simply, to "get what bytes the string has been stored in". (And, of course, to be able to re-construct the string from the bytes.) For those goals, I honestly do not understand why people keep telling you that you need the encodings. You certainly do NOT need to worry about encodings ...
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Request failed: unacceptable content-type: text/html using AFNetworking 2.0

I'm trying out the new version 2.0 of AFNetworking and I'm getting the error above. Any idea why this is happening? Here's my code: ...
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Inserting a tab character into text using C#

I'm building an application where I should capture several values and build a text with them: Name , Age , etc. 9 Answer...
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CSS filter: make color image with transparency white

...ent from 2014. In those years there have been 33 major versions of Firefox and IE has gone from the second most popular browser in the world to essentially dead. – Daniel Perván Dec 1 '18 at 8:29 ...
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Changing default shell in Linux [closed]

How is it possible to change the default shell? The env command currently says: 3 Answers ...
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Get margin of a View

... (ViewGroup.MarginLayoutParams) view.getLayoutParams(); http://developer.android.com/reference/android/view/ViewGroup.MarginLayoutParams.html share | improve this answer | ...
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Detect home button press in android

...void onHomeLongPressed() { } }); mHomeWatcher.startWatch(); import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.util.Log; public class HomeWatcher { static final String TAG = "hg"; ...