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Rake just one migration

... rake db:migrate:redo VERSION=xxxxxxx, but that will run the down and then the up step. You could do this in conjunction with commenting out the down step temporarily. share | improve this ...
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How can I access getSupportFragmentManager() in a fragment?

I have a FragmentActivity and I want to use a map fragment within it. I'm having a problem getting the support fragment manager to access it. ...
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ObservableCollection Doesn't support AddRange method, so I get notified for each item added, besides

...ave the time to implement this. RAW Code - open as Raw, then do Ctrl+A to select all, then Ctrl+C to copy. // Licensed to the .NET Foundation under one or more agreements. // The .NET Foundation licenses this file to you under the MIT license. // See the LICENSE file in the project root for more i...
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Is it possible to override the configuration of a plugin already defined for a profile in a parent P

.../jenkins/1.34/jenkins-1.34.pom nothing worked. – Alexander Samoylov Jun 16 at 10:56 add a com...
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“Variable” variables in Javascript?

...les that do not become a property of window are variables defined with let and const, and classes. There is almost always a better solution than using variable variables! Instead you should be looking at data structures and choose the right one for your problem. If you have a fixed set of names, s...
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How to embed an autoplaying YouTube video in an iframe?

I am trying to embed the new iframe version of a YouTube video and get it to auto play. 14 Answers ...
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NSInvocation for Dummies?

...message rendered static, that is, it is an action turned into an object. And, in a little more detail: The concept of messages is central to the objective-c philosophy. Any time you call a method, or access a variable of some object, you are sending it a message. NSInvocation comes in handy when ...
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How can you find out which process is listening on a port on Windows?

...mmendation for TCPView. It looks very useful! -a Displays all connections and listening ports. -b Displays the executable involved in creating each connection or listening port. In some cases well-known executables host multiple independent components, and in these cases the sequence of components...
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In-App Billing test: android.test.purchased already owned

I am currently testing In-App Billing for a future app, and after I successfully "bought" the test item "android.test.purchased" the first time, I now receive the response code 7 every time I try to buy it again, which means that I already own this item. ...
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What is state-of-the-art for text rendering in OpenGL as of version 4.1? [closed]

...g easily antialiased, which is trivial using a distance-map-textured quad, and evaluating curves in the shader is still computationally much more expensive than necessary. The best trade-off between "fast" and "quality" are still textured quads with a signed distance field texture. It is very sligh...