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How do you write a migration to rename an ActiveRecord model and its table in Rails?

I'm terrible at naming and realize that there are a better set of names for my models in my Rails app. Is there any way to use a migration to rename a model and its corresponding table? ...
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ViewModel Best Practices

... a ViewModel that more accurately reflects the model that the view is trying to display, but I'm curious about some of the conventions (I'm new to the MVC pattern, if it wasn't already obvious). ...
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How to activate “Share” button in android app?

... Add a Button and on click of the Button add this code: Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND); sharingIntent.setType("text/plain"); String shareBody = "Here is the share content body"; sharingIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "S...
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Detect changed input text box

I've looked at numerous other questions and found very simple answers, including the code below. I simply want to detect when someone changes the content of a text box but for some reason it's not working... I get no console errors. When I set a breakpoint in the browser at the change() functio...
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REST API Token-based Authentication

I'm developing a REST API that requires authentication. Because the authentication itself occurs via an external webservice over HTTP, I reasoned that we would dispense tokens to avoid repeatedly calling the authentication service. Which brings me neatly to my first question: ...
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What's the difference between ES6 Map and WeakMap?

Looking this and this MDN pages it seems like the only difference between Maps and WeakMaps is a missing "size" property for WeakMaps. But is this true? What's the difference between them? ...
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What does FrameLayout do?

I'm new to programming. I was using Graphical Layout then when I was reading xml file, I saw FrameLayout. Then I searched, but I couldn't find something useful. What is FrameLayout and what does it do? ...
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How do I clear this setInterval inside a function?

Normally, I’d set the interval to a variable and then clear it like var the_int = setInterval(); clearInterval(the_int); but for my code to work I put it in an anonymous function: ...
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Android layout replacing a view with another view on run time

I have a xml -layout file main with two textviews A/B and a view C. I have two other xml -layout files option1 and option2 . Is it possible to load either option1 or option2 in run time via Java into C? If so, what function do I have to use? ...
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Should I put the Google Analytics JS in the or at the end of ?

Google gives me a piece of javascript and tells me to include it in the <head> . 7 Answers ...