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How do I preview emails in Rails?

... Action Mailer now has a built in way of previewing emails in Rails 4.1. For example, check this out: # located in test/mailers/previews/notifier_mailer_preview.rb class NotifierPreview < ActionMailer::Preview # Accessible from http:...
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Is there a quicker / better way to clear the iPhone Simulator cache than deleting its directory?

...o the Keyboard Shortcut:. (I use command-period) Click the Add button. Now, while in your iOS Simulator, you can simply use your new shortcut key to reset. If the Simulator doesn't appear in the drop down list: In a Finder window, go to your Applications folder. Right-click Xcode and choose...
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CORS - What is the motivation behind introducing preflight requests?

...onfused as to the purpose of the preflight request but I think I've got it now. The key insight is that preflight requests are not a security thing. Rather, they're a not-changing-the-rules thing. Preflight requests have nothing to do with security, and they have no bearing on applications that ...
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How to make a class property? [duplicate]

... type_ = type(obj) # return self.fset.__get__(obj, type_)(value) Now all will be fine. share | improve this answer | follow | ...
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Format in kotlin string templates

... Is this available now? – Ragunath Jawahar Mar 13 '15 at 8:00 4 ...
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What is the purpose of Android's tag in XML layouts?

...e widget, you would have to use a layout. Let's say that include1.xml has now two TextView: a layout has to be declared. Let's choose a LinearLayout. include1.xml: <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/layout2" android:layout_width...
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NVIDIA vs AMD: GPGPU performance

... in scientific computing), tilt the balance in favor of CUDA (at least for now). EDIT Jan 12, 2013 It's been two years since I made this post and it still seems to attract views sometimes. So I have decided to clarify a few things AMD has stepped up their game. They now have both BLAS and FFT ...
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Equivalent of LIMIT and OFFSET for SQL Server?

... Old now. Sql Server 2012 and later support OFFSET/FETCH – Joel Coehoorn Sep 17 '13 at 3:06 31 ...
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Two versions of python on linux. how to make 2.7 the default

..., or put it in your ~/.bashrc if you want the change to be persistent, and now when you type python it runs your chosen 2.7, but when some program on your system tries to run a script with /usr/bin/env python it runs the standard 2.6. Alternatively, just create a virtual environment out of your 2...
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Pointer to pointer clarification

...lue of ipp. So, ipp still points to ip1 (the value of ipp), ip1's value is now the same as ip2's value, so they both point to j. This: *ipp = ip2; is the same as: ip1 = ip2; share | improve th...