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Error inflating class fragment

... As hdemirchian said, make sure to use: import android.support.v4.app.Fragment; And also make sure that the Activity that is using the fragment(s) extends FragmentActivity instead of the regular Activity, import android.support.v4.app.Fra...
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How to avoid having class data shared among instances?

... def __init__(self): self.list = [] Declaring the variables inside the class declaration makes them "class" members and not instance members. Declaring them inside the __init__ method makes sure that a new instance of the members is created alongside every new instance of the object, whi...
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Preview layout with merge root tag in Intellij IDEA/Android Studio

... There is a new parentTag tools attribute (added in Android Studio 2.2) that you can use to specify the layout type for a merge tag, which will make the layout render correctly in the layout editor preview. So using your example: <merge xmlns:android="http://schemas.android.c...
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jquery disable form submit on enter

... If keyCode is not caught, catch which: $('#formid').on('keyup keypress', function(e) { var keyCode = e.keyCode || e.which; if (keyCode === 13) { e.preventDefault(); return false; } }); EDIT: missed it, it's better to use keyup instead of keypress EDIT 2:...
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Is there an “exists” function for jQuery?

... @abhirathore2006 If you use an id selector and the element doesn't exist then length is 0 and doesn't throw exceptions. – Robert Jun 29 '17 at 20:35 ...
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Are there any side effects of returning from inside a using() statement?

Returning a method value from inside a using statement that gets a DataContext seems to always work fine , like this: 5 ...
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How to Create Multiple Where Clause Query Using Laravel Eloquent?

...where clauses $query=DB::table('users') ->whereRaw("users.id BETWEEN 1003 AND 1004") ->whereNotIn('users.id', [1005,1006,1007]) ->whereIn('users.id', [1008,1009,1010]); $query->where(function($query2) use ($value) { $query2->where('user_t...
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What are the Ruby Gotchas a newbie should be warned about? [closed]

...s simple as I had expected. More precisely, the "rule of least-surprise" did not seem very respected to me (of course this is quite subjective). For example: ...
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String comparison in Python: is vs. == [duplicate]

...x==y is also True. Not always. NaN is a counterexample. But usually, identity (is) implies equality (==). The converse is not true: Two distinct objects can have the same value. Also, is it generally considered better to just use '==' by default, even when comparing int or Boolean value...
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How to dynamically compose an OR query filter in Django?

... Thanks! This was what I was looking for :) Didn't know you could do |= – Jack Ha May 12 '09 at 12:43 23 ...