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What does PHP keyword 'var' do?

... If it's de-deprecated, what's the best practice now in 5.3 - to use it or not to use it? Can you use it like private var $foo = 'bar';? – Tom Auger May 11 '11 at 15:01 ...
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Rails 3 migrations: Adding reference column?

... If you are using the Rails 4.x you can now generate migrations with references, like this: rails generate migration AddUserRefToProducts user:references like you can see on rails guides ...
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How can I display an image from a file in Jupyter Notebook?

... Note, until now posted solutions only work for png and jpg! If you want it even easier without importing further libraries or you want to display an animated or not animated GIF File in your Ipython Notebook. Transform the line where yo...
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Java equivalents of C# String.Format() and String.Join()

I know this is a bit of a newbie question, but are there equivalents to C#'s string operations in Java? 16 Answers ...
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How to make good reproducible pandas examples

...=25, freq='D'), 4 ), 'price':(np.random.randn(100).cumsum() + 10) }) Now we have a sample dataset with 100 lines (25 dates per ticker), but we have only used 4 lines to do it, making it easy for everyone else to reproduce without copying and pasting 100 lines of code. You can then display sub...
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Adding Only Untracked Files

...l files to the index, but without their content. Files that were untracked now behave as if they were tracked. Their content will be displayed in git diff, and you can add then interactively with git add -p. share |...
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How do I make a UITableViewCell appear disabled?

I know about UITableview: How to Disable Selection for Some Rows but Not Others and cell.selectionStyle = UITableViewCellSelectionStyleNone , but how do I make a cell (or any UIView for that matter) appear disabled (grayed-out) like below? ...
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In android studio,cannot load 2 facets-unknown facet type:android and android-gradle

... Do you know if there is an alternative method where you can keep your previous settings? I'm planning on looking this up later, just wondering if you know off hand. – fawaad Mar 30 '18 at 20:43 ...
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horizontal line and right way to code it in html, css

... <hr> is valid HTML5. It used represent a horizontal rule, but is now defined in semantic terms as a thematic break between content. Most browsers will still display it as a horizontal line unless told otherwise. Source: developer.mozilla.org/en-US/docs/Web/HTML/Element/hr ...
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Mvn install or Mvn package

..., I have a Java based web project with maven configured in my MyEclipse. Now if I modified any java files then do I need to do Run as -> Mvn install or Mvn package ? ...