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Ruby on Rails: How do I add placeholder text to a f.text_field?

...to my f.text_field fields so that the text comes pre-written by default, and when a user click inside the fields, the text goes away - allowing the user to type in the new text? ...
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How do you connect to multiple MySQL databases on a single webpage?

I have information spread out across a few databases and want to put all the information onto one webpage using PHP. I was wondering how I can connect to multiple databases on a single PHP webpage. ...
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C++11 reverse range-based for-loop

...e key observation is that range-based for-loops work by relying on begin() and end() in order to acquire the range's iterators. Thanks to ADL, one doesn't even need to define their custom begin() and end() in the std:: namespace. Here is a very simple-sample solution: // --------------------------...
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How to set web.config file to show full error message

... See the difference between customErrors and httpErrors – stomy Oct 30 '17 at 17:05 ...
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Error handling in C code

What do you consider "best practice" when it comes to error handling errors in a consistent way in a C library. 22 Answers ...
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Edit and Continue: “Changes are not allowed when…”

Even if I create a clean WinForms project, Edit and Continue doesn't work and gives me the error: 36 Answers ...
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Collect successive pairs from a stream

... My StreamEx library which extends standard streams provides a pairMap method for all stream types. For primitive streams it does not change the stream type, but can be used to make some calculations. Most common usage is to calculate differences: int[] pairwis...
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Show DialogFragment with animation growing from a point

...styles.xml add your custom theme: <style name="MyCustomTheme" parent="@android:style/Theme.Panel"> <item name="android:windowAnimationStyle">@style/MyAnimation.Window</item> </style> <style name="MyAnimation.Window" parent="@android:style/Animation.Activity"> ...
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How to get a json string from url?

... If you're using .NET 4.5 and want to use async then you can use HttpClient in System.Net.Http: using (var httpClient = new HttpClient()) { var json = await httpClient.GetStringAsync("url"); // Now parse with JSON.Net } ...
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How to make a SPA SEO crawlable?

...s I would like to share my solution so that others may also make use of it and possibly improve it further. I am using MVC with Webapi controllers, and Phantomjs on the server side, and Durandal on the client side with push-state enabled; I also use Breezejs for client-server data in...